CVE-2022-45061

HIGHNVD 7.57.5
EchelonGraph scoreMEDIUM confidence

“—” beside the score: it is equal to NVD's CVSS score.

Score 7.5 from GitHub Security Advisory (severity: HIGH) published 2022-11-09. NVD baseline CVSS 7.5; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: EPSS, GitHub Security Advisory, NVD CVSS v3
Trending — 4 sources updated this weekElevated

Also known asEUVD-2022-47983 (ENISA EUVD) · GHSA-2mp6-9mjc-p6jg (GitHub Security Advisories)Source: ENISA EUVD

7.5EG
EchelonGraph verdictPlan a fixRemediate within your standard update timelines at low or medium mission impact and sooner than that at high (the SSVC decision on this page).
  • CISA's Vulnrichment rates exploitation as PoC; EchelonGraph holds no exploit-code reference for it
CISA-KEV: Not listedEPSS PROB: 2.7%CVSS: 7.5Exploit: No code on recordExposed services: Not assessed

A fix is available — apply it.

An issue was discovered in Python before 3.11.1. An unnecessary quadratic algorithm exists in one path when processing some inputs to the IDNA (RFC 3490) decoder, such that a crafted, unreasonably long name being presented to the decoder could lead to a CPU denial of service. Hostnames are often supplied by remote servers that could be controlled by a malicious actor; in such a scenario, they could trigger excessive CPU consumption on the client attempting to make use of an attacker-supplied supposed hostname. For example, the attack payload could be placed in the Location header of an HTTP response with status code 302. A fix is planned in 3.11.1, 3.10.9, 3.9.16, 3.8.16, and 3.7.16.

CVSS v3
7.5
EG Score
7.5HIGHmedium confidence
EG Risk
65
EG Risk 65/100

EG Risk is EchelonGraph's 0–100 priority score. It fuses impact severity (EG Severity, the CVSS base score, never the KEV-floored or EPSS-lifted EG Score) with real-world exploitation and automatability, under weights EchelonGraph set by hand, so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner.

How it’s computed (value × EchelonGraph’s weight)
Severity75% × 45%
Impact severity (EG Severity): CVSS 7.5 of 10. Never the KEV-floored or EPSS-lifted EG Score.
Exploitation40% × 40%
EchelonGraph's fixed weight for EG-KEV Tier 3 (Elevated): a constant, not a probability.
Automatability100% × 15%
CISA's SSVC Automatable value: yes (Vulnrichment).
SSVC (CISA's decision table, applied by EchelonGraph): Track at low or medium mission impact; Attend at high (mission-essential systems).
Exploitation public PoC (CISA Vulnrichment) · Automatable yes (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). All three are CISA's SSVC values (Vulnrichment). EchelonGraph applied CISA's decision table to them; CISA publishes SSVC inputs and the table, not a decision for each CVE.
Action: A fix is available. Apply it within your standard update timelines at low or medium mission impact and sooner than that at high.
EPSS PROB
2.7%
EPSS %ILE
85th
KEV
Not listed

What the EG score is made of (scorer v4.0: the three questions the 0–10 score mixes, published apart · methodology)

The EG score (7.5): severity, escalated by confirmed exploitation. This CVE's 7.5 is its impact severity (EG Severity), not escalated.

EG Severity
7.5 HIGHCVSS-B, impact only: no KEV listing, EPSS or EG-KEV tier raises it.GitHub Security Advisory CVSS
EG Likelihood
2.7% within 30 daysSource: FIRST EPSS (model v2026.06.15, score date 2026-10-27). FIRST's exploitation probability, not an EchelonGraph model.
Confirmed exploitation
None on record (CISA KEV, EG-KEV Tier 1)Reported apart from the likelihood: an observed fact, not a probability.
EG Priority
SSVC Track at medium mission impactTrack at low or medium mission impact; Attend at high (mission-essential systems).CISA BOD 26-04: 14 days if the affected system is publicly exposed; 60 days if it is not.Each input and its source, and whom BOD 26-04 binds: the SSVC and BOD 26-04 blocks below.

SSVC (CISA's decision table, applied by EchelonGraph)Track at low or medium mission impact; Attend at high (mission-essential systems).

A fix is available. Apply it within your standard update timelines at low or medium mission impact and sooner than that at high.

Exploitation public PoC (CISA Vulnrichment) · Automatable yes (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). All three are CISA's SSVC values (Vulnrichment). EchelonGraph applied CISA's decision table to them; CISA publishes SSVC inputs and the table, not a decision for each CVE. Mission impact is CISA's Mission & Well-being decision point, and only you can judge it. CISA's table makes it high when Mission Prevalence is Essential — the vulnerable component "directly provides capabilities that constitute at least one MEF for at least one entity" (MEF: mission essential function) — or when Public Well-Being Impact is Irreversible: "multiple fatalities are likely", the cyber-physical system "is likely lost or destroyed", "extreme or serious externalities" are imposed on other parties, or social systems such as elections or the financial grid "are destabilized and potentially collapse". CISA's decision table

BOD 26-04 (CISA's remediation timeline, Table 1)14 days if the affected system is publicly exposed; 60 days if it is not.

The score's inputs: In CISA KEV no (CISA's KEV catalog) · Automatable yes (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). Whether your system is publicly exposed is yours to answer. BOD 26-04 binds US Federal Civilian Executive Branch agencies; for anyone else it is CISA's published timeline, a reference rather than an obligation. The directive · how EchelonGraph applies it

Published

November 9, 2022

Last Modified

October 14, 2026

Advisory Details (10)

Auto-updated Oct 14, 2026
Patch available.
Web page

[SECURITY] Fedora 37 Update: python3.7-3.7.16-1.fc37 - package-announce - Fedora mailing-lists

https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/63FS6VHY4DCS74HBTEINUDOECQ2X6ZCH/
Web page

[SECURITY] Fedora 36 Update: python3.8-3.8.16-1.fc36 - package-announce - Fedora mailing-lists

https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/VCMDX6IFKLOA3NXUQEV524L5LHTPI2JI/
Web page

[SECURITY] Fedora 35 Update: python3.11-3.11.1-1.fc35 - package-announce - Fedora mailing-lists

https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/PLQ2BNZVBBAQPV3SPRU24ZD37UYJJS7W/
Web page

[SECURITY] Fedora 35 Update: python3.9-3.9.16-1.fc35 - package-announce - Fedora mailing-lists

https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ZB5YCMIRVX35RUB6XPOWKENCVCJEVDRK/
Web page

[SECURITY] Fedora 35 Update: python3.7-3.7.16-1.fc35 - package-announce - Fedora mailing-lists

https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/RTN2OOLKYTG34DODUEJGT5MLC2PFGPBA/
Web page

[SECURITY] Fedora 35 Update: python3.8-3.8.16-1.fc35 - package-announce - Fedora mailing-lists

https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/GTPVDZDATRQFE6KAT6B4BQIQ4GRHIIIJ/
Web page

[SECURITY] Fedora 37 Update: mingw-python3-3.10.8-2.fc37 - package-announce - Fedora mailing-lists

https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/4WBZJNSALFGMPYTINIF57HAAK46U72WQ/
Web page

[SECURITY] Fedora 36 Update: mingw-python3-3.10.8-2.fc36 - package-announce - Fedora mailing-lists

https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/O67LRHDTJWH544KXB6KY4HMHQLYDXFPK/
Web page

Slow IDNA decoding with large strings [CVE-2022-45061] · Issue #98433 · python/cpython · GitHub

https://github.com/python/cpython/issues/98433

Vendor Advisories for CVE-2022-45061(7)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Patch Availability(12)

Patches are aggregated from vendor advisories (Red Hat, Microsoft, Cisco, GitHub) and package ecosystems (OSV, GHSA). Multiple rows for the same upstream release have been deduplicated.

Affected Packages

(20 across 16 ecosystems)
Debian:11(3)
PackageVulnerable rangeFix by version rangeDependents
pypy37.3.5+dfsg-2, 7.3.5+dfsg-2+deb11u1, 7.3.5+dfsg-2+deb11u2, 7.3.5+dfsg-2+deb11u3
  • every version up to 7.3.5+dfsg-2+deb11u4: fixed in 7.3.5+dfsg-2+deb11u4
—
python2.72.7.18-10 ... 2.7.18-9 (10 versions)
  • every version on: no fix on record
—
python3.93.9.2-1, 3.9.2-1+deb11u1
  • every version up to 3.9.2-1+deb11u2: fixed in 3.9.2-1+deb11u2
—
Debian:10(2)
PackageVulnerable rangeFix by version rangeDependents
python2.72.7.16-2, 2.7.16-2+deb10u1
  • every version up to 2.7.16-2+deb10u2: fixed in 2.7.16-2+deb10u2
—
python3.73.7.3-2, 3.7.3-2+deb10u1, 3.7.3-2+deb10u2, 3.7.3-2+deb10u3, 3.7.3-2+deb10u4
  • every version up to 3.7.3-2+deb10u5: fixed in 3.7.3-2+deb10u5
—
Debian:12(2)
PackageVulnerable rangeFix by version rangeDependents
pypy3—
  • every version up to 7.3.11+dfsg-1: fixed in 7.3.11+dfsg-1
—
python3.11—
  • every version up to 3.11.1-1: fixed in 3.11.1-1
—
Alpine:v3.14(1)
PackageVulnerable rangeFix by version rangeDependents
python3—
  • every version up to 3.9.16-r0: fixed in 3.9.16-r0
—
Alpine:v3.15(1)
PackageVulnerable rangeFix by version rangeDependents
python3—
  • every version up to 3.9.16-r0: fixed in 3.9.16-r0
—
Alpine:v3.16(1)
PackageVulnerable rangeFix by version rangeDependents
python3—
  • every version up to 3.10.9-r0: fixed in 3.10.9-r0
—
Alpine:v3.17(1)
PackageVulnerable rangeFix by version rangeDependents
python3—
  • every version up to 3.10.9-r0: fixed in 3.10.9-r0
—
Alpine:v3.18(1)
PackageVulnerable rangeFix by version rangeDependents
python3—
  • every version up to 3.11.1-r0: fixed in 3.11.1-r0
—
Alpine:v3.19(1)
PackageVulnerable rangeFix by version rangeDependents
python3—
  • every version up to 3.11.1-r0: fixed in 3.11.1-r0
—
Alpine:v3.20(1)
PackageVulnerable rangeFix by version rangeDependents
python3—
  • every version up to 3.11.1-r0: fixed in 3.11.1-r0
—
Alpine:v3.21(1)
PackageVulnerable rangeFix by version rangeDependents
python3—
  • every version up to 3.11.1-r0: fixed in 3.11.1-r0
—
Alpine:v3.22(1)
PackageVulnerable rangeFix by version rangeDependents
python3—
  • every version up to 3.11.1-r0: fixed in 3.11.1-r0
—
Alpine:v3.23(1)
PackageVulnerable rangeFix by version rangeDependents
python3—
  • every version up to 3.11.1-r0: fixed in 3.11.1-r0
—
Alpine:v3.24(1)
PackageVulnerable rangeFix by version rangeDependents
python3—
  • every version up to 3.11.1-r0: fixed in 3.11.1-r0
—
Debian:13(1)
PackageVulnerable rangeFix by version rangeDependents
pypy3—
  • every version up to 7.3.11+dfsg-1: fixed in 7.3.11+dfsg-1
—
Debian:14(1)
PackageVulnerable rangeFix by version rangeDependents
pypy3—
  • every version up to 7.3.11+dfsg-1: fixed in 7.3.11+dfsg-1
—

Weakness Classification(2)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Additional Vendor Advisories

(7)

Data Freshness Timeline

(refreshed 10× in last 7d / 45× in last 30d)

Each row is a time one of our pipelines fetched, updated or re-scored this CVE. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. An arrow marks a change the record states ("CVSS v3 → 9.1"); EPSS and GHSA rows show the values recorded at that time, not what changed (EPSS values are rounded; hover one for the exact figures). Most recent first.

Showing the most recent 96 of 214 refreshes on record for this CVE.

A repeat, a row identical to one the same pipeline wrote less than 10 seconds earlier, is not a separate refresh and is not counted. 4 repeat rows among the latest 100 are merged into the row they repeat. The 118 oldest rows on record are not shown and were not checked, so the counts can still include repeats.

  1. 2026-11-01 16:30 UTCEPSS rescoreEPSS 2.7% · 85th percentile
  2. 2026-10-31 16:29 UTCEPSS rescoreEPSS 2.7% · 85th percentile
  3. 2026-10-30 16:30 UTCEPSS rescoreEPSS 2.7% · 85th percentile
  4. 2026-10-29 16:29 UTCEPSS rescoreEPSS 2.7% · 85th percentile
  5. 2026-10-28 16:28 UTCEPSS rescoreEPSS 2.7% · 85th percentile
  6. 2026-10-28 15:37 UTCEG score recompute
  7. 2026-10-28 15:37 UTCVendor advisory
  8. 2026-10-28 15:37 UTCGHSA enrichmentGHSA-2mp6-9mjc-p6jg · GitHub severity HIGH · GitHub CVSS 7.5
  9. 2026-10-27 16:28 UTCEPSS rescoreEPSS 2.7% · 85th percentile
  10. 2026-10-26 16:28 UTCEPSS rescoreEPSS 2.7% · 85th percentile
  11. 2026-10-25 17:57 UTCEG score recompute
  12. 2026-10-25 16:29 UTCEPSS rescoreEPSS 2.7% · 85th percentile
  13. 2026-10-24 16:29 UTCEPSS rescoreEPSS 2.7% · 85th percentile
  14. 2026-10-23 16:28 UTCEPSS rescoreEPSS 2.7% · 85th percentile
  15. 2026-10-22 16:30 UTCEPSS rescoreEPSS 2.7% · 85th percentile
  16. 2026-10-21 16:29 UTCEPSS rescoreEPSS 2.7% · 85th percentile
  17. 2026-10-21 13:31 UTCEG score recompute
  18. 2026-10-21 13:31 UTCVendor advisory
  19. 2026-10-21 13:31 UTCGHSA enrichmentGHSA-2mp6-9mjc-p6jg · GitHub severity HIGH · GitHub CVSS 7.5
  20. 2026-10-20 16:29 UTCEPSS rescoreEPSS 2.7% · 85th percentile
  21. 2026-10-19 16:28 UTCEPSS rescoreEPSS 2.7% · 85th percentile
  22. 2026-10-18 16:28 UTCEPSS rescoreEPSS 2.7% · 85th percentile
  23. 2026-10-18 08:24 UTCEG score recompute
  24. 2026-10-17 16:29 UTCEPSS rescoreEPSS 2.7% · 85th percentile
  25. 2026-10-16 16:35 UTCEPSS rescoreEPSS 2.7% · 85th percentile
Show 71 more
  1. 2026-10-15 16:28 UTCEPSS rescoreEPSS 2.7% · 85th percentile
  2. 2026-10-14 19:33 UTCVendor advisory
  3. 2026-10-14 19:33 UTCGHSA enrichmentGHSA-2mp6-9mjc-p6jg · GitHub severity HIGH · GitHub CVSS 7.5
  4. 2026-10-14 18:58 UTCEG score recompute
  5. 2026-10-14 18:58 UTCVendor advisory
  6. 2026-10-14 18:57 UTCGHSA enrichmentGHSA-2mp6-9mjc-p6jg · GitHub severity HIGH · GitHub CVSS 7.5
  7. 2026-10-14 16:29 UTCEPSS rescoreEPSS 2.7% · 85th percentile
  8. 2026-10-13 16:29 UTCEPSS rescoreEPSS 2.7% · 85th percentile
  9. 2026-10-12 18:45 UTCEG score recompute
  10. 2026-10-12 16:30 UTCEPSS rescoreEPSS 2.7% · 85th percentile
  11. 2026-10-11 22:08 UTCEG score recompute
  12. 2026-10-11 13:44 UTCEPSS rescoreEPSS 2.7% · 85th percentile
  13. 2026-10-10 19:57 UTCEPSS rescoreEPSS 2.7% · 85th percentile
  14. 2026-10-09 20:04 UTCEPSS rescoreEPSS 2.7% · 85th percentile
  15. 2026-10-08 17:05 UTCEPSS rescoreEPSS 2.7% · 85th percentile
  16. 2026-10-07 23:45 UTCEPSS rescoreEPSS 2.7% · 85th percentile
  17. 2026-10-06 15:14 UTCEPSS rescoreEPSS 2.7% · 85th percentile
  18. 2026-10-05 17:40 UTCEPSS rescoreEPSS 2.7% · 85th percentile
  19. 2026-10-04 23:19 UTCEPSS rescoreEPSS 2.7% · 85th percentile
  20. 2026-10-03 14:23 UTCEPSS rescoreEPSS 2.7% · 85th percentile
  21. 2026-10-02 16:23 UTCEPSS rescoreEPSS 2.7% · 85th percentile
  22. 2026-10-01 19:47 UTCEPSS rescoreEPSS 2.7% · 85th percentile
  23. 2026-09-30 16:09 UTCEG score recompute
  24. 2026-09-30 15:01 UTCEPSS rescoreEPSS 2.7% · 85th percentile
  25. 2026-09-29 15:16 UTCEPSS rescoreEPSS 2.7% · 85th percentile
  26. 2026-09-28 13:48 UTCEPSS rescoreEPSS 2.7% · 85th percentile
  27. 2026-09-27 13:42 UTCEPSS rescoreEPSS 2.7% · 85th percentile
  28. 2026-09-26 15:55 UTCEPSS rescoreEPSS 2.7% · 85th percentile
  29. 2026-09-26 00:22 UTCEPSS rescoreEPSS 2.7% · 85th percentile
  30. 2026-09-24 06:15 UTCOSV refresh
  31. 2026-09-23 13:45 UTCEPSS rescoreEPSS 2.7% · 85th percentile
  32. 2026-09-20 20:13 UTCEPSS rescoreEPSS 2.7% · 84th percentile
  33. 2026-09-19 15:38 UTCEPSS rescoreEPSS 2.7% · 84th percentile
  34. 2026-09-16 14:05 UTCEPSS rescoreEPSS 2.7% · 84th percentile
  35. 2026-09-16 05:10 UTCEPSS rescoreEPSS 2.7% · 84th percentile
  36. 2026-09-15 03:07 UTCEPSS rescoreEPSS 2.7% · 84th percentile
  37. 2026-09-12 14:57 UTCEPSS rescoreEPSS 2.7% · 84th percentile
  38. 2026-09-11 14:50 UTCEPSS rescoreEPSS 2.7% · 84th percentile
  39. 2026-09-11 09:33 UTCEPSS rescoreEPSS 2.7% · 84th percentile
  40. 2026-09-08 21:57 UTCEPSS rescoreEPSS 2.5% · 83rd percentile
  41. 2026-09-07 15:58 UTCEPSS rescoreEPSS 2.5% · 83rd percentile
  42. 2026-09-06 13:45 UTCEPSS rescoreEPSS 2.5% · 83rd percentile
  43. 2026-09-05 15:25 UTCEPSS rescoreEPSS 2.5% · 83rd percentile
  44. 2026-09-04 23:29 UTCOSV refresh
  45. 2026-09-04 13:57 UTCEPSS rescoreEPSS 2.5% · 83rd percentile
  46. 2026-09-04 05:04 UTCEPSS rescoreEPSS 2.5% · 83rd percentile
  47. 2026-09-02 14:09 UTCEPSS rescoreEPSS 2.5% · 83rd percentile
  48. 2026-09-01 13:51 UTCEPSS rescoreEPSS 2.5% · 83rd percentile
  49. 2026-08-30 19:14 UTCEPSS rescoreEPSS 2.5% · 83rd percentile
  50. 2026-08-30 01:19 UTCEPSS rescoreEPSS 2.5% · 83rd percentile
  51. 2026-08-28 21:38 UTCEPSS rescoreEPSS 2.5% · 83rd percentile
  52. 2026-08-27 14:22 UTCEPSS rescoreEPSS 2.5% · 83rd percentile
  53. 2026-08-26 14:43 UTCEPSS rescoreEPSS 2.5% · 83rd percentile
  54. 2026-08-25 13:46 UTCEPSS rescoreEPSS 2.5% · 83rd percentile
  55. 2026-08-24 14:13 UTCEPSS rescoreEPSS 2.5% · 83rd percentile
  56. 2026-08-23 00:17 UTCEPSS rescoreEPSS 2.5% · 83rd percentile
  57. 2026-08-21 23:46 UTCEPSS rescoreEPSS 2.5% · 83rd percentile
  58. 2026-08-20 22:53 UTCEPSS rescoreEPSS 2.5% · 83rd percentile
  59. 2026-08-19 17:01 UTCEPSS rescoreEPSS 2.4% · 82nd percentile
  60. 2026-08-18 13:45 UTCEPSS rescoreEPSS 2.4% · 82nd percentile
  61. 2026-08-18 10:21 UTCOSV refresh
  62. 2026-08-17 13:44 UTCEPSS rescoreEPSS 2.4% · 82nd percentile
  63. 2026-08-16 14:53 UTCEPSS rescoreEPSS 2.4% · 82nd percentile
  64. 2026-08-16 02:12 UTCEPSS rescoreEPSS 2.4% · 82nd percentile
  65. 2026-08-15 01:27 UTCEPSS rescoreEPSS 2.4% · 82nd percentile
  66. 2026-08-13 21:58 UTCEPSS rescoreEPSS 2.4% · 82nd percentile
  67. 2026-08-12 13:48 UTCEPSS rescoreEPSS 2.4% · 82nd percentile
  68. 2026-08-11 13:39 UTCEPSS rescoreEPSS 2.4% · 82nd percentile
  69. 2026-08-09 13:44 UTCEPSS rescoreEPSS 2.4% · 82nd percentile
  70. 2026-08-08 16:34 UTCEPSS rescoreEPSS 2.4% · 82nd percentile
  71. 2026-08-07 16:24 UTCEPSS rescoreEPSS 2.4% · 82nd percentile

Frequently asked(5)

What is CVE-2022-45061?
CVE-2022-45061 is a high-severity vulnerability; its CVE record was published on November 9, 2022. An issue was discovered in Python before 3.11.1. An unnecessary quadratic algorithm exists in one path when processing some inputs to the IDNA (RFC 3490) decoder, such that a crafted, unreasonably long name being presented to the decoder could lead to a CPU denial of service. Hostnames are often…
When was the CVE record for CVE-2022-45061 published?
The CVE record for CVE-2022-45061 was published on November 9, 2022. That is the record's publication date; the vulnerability itself may have been made public earlier. EchelonGraph's copy of the record carries a last-modified date of October 14, 2026; the record at its source may have been updated since.
Is CVE-2022-45061 actively exploited?
CVE-2022-45061 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 2.7% probability of exploitation in the next 30 days (85th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2022-45061?
CVE-2022-45061 has a CVSS v3 base score of 7.5 (NVD).
How do I remediate CVE-2022-45061?
A fix for CVE-2022-45061 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2022-45061 are linked in the Vendor Advisories panel on this page.

Dependency Blast Radius

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