CVE-2026-45822

MEDIUMPre-NVD 6.66.6
EchelonGraph scoreMEDIUM confidence

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

This medium-severity CVE scores 6.6 under a secondary CVSS source (NVD's own analysis pending). EPSS exploit probability: 0.5% (43rd percentile of EPSS-scored CVEs). No GitHub Security Advisory CVSS is on record for this CVE.

Triggered by: Headline CVSS from a secondary CVSS source
Sources: EPSS, a secondary CVSS source
Trending — 4 sources updated this week

Also known asEUVD-2026-40267 (ENISA EUVD) · GHSA-vcc3-ghjq-m6fr (GitHub Security Advisories)Source: ENISA EUVD

6.6EG
EchelonGraph verdictMonitorRemediate within your standard update timelines at low or medium mission impact and sooner than that at high (the SSVC decision on this page).
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0.5%CVSS: 6.6Exploit: None knownExposed services: Not assessed

A fix is available — apply it.

decode-uri-component through 0.4.1 is vulnerable to denial of service. The decode() function splits input on '%' producing N tokens and calls decodeComponents(), exhibiting super-linear parsing time: 200 '%ab' tokens takes approximately 0.7s, 700 tokens approximately 6s, and 1400 tokens approximately 33s. An attacker can cause significant CPU consumption and event-loop blocking via crafted input.

CVSS v3
6.6
EG Score
6.6MEDIUMmedium confidence
EG Risk
45
EG Risk 45/100

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)
Severity66% × 45%
Impact severity (EG Severity): CVSS 6.6 of 10. Never the KEV-floored or EPSS-lifted EG Score.
Exploitation0.5% × 40%
FIRST EPSS: the 30-day exploitation probability when EchelonGraph scored this CVE.
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 none (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
0.5%
EPSS %ILE
43rd
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 (6.6): severity, escalated by confirmed exploitation. This CVE's 6.6 is its impact severity (EG Severity), not escalated.

EG Severity
6.6 MEDIUMCVSS-B, impact only: no KEV listing, EPSS or EG-KEV tier raises it.a secondary CVSS source · CVSS v3.0 or v3.1
EG Likelihood
0.5% within 30 daysSource: FIRST EPSS (model v2026.06.15, score date 2026-10-31). 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 none (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

June 30, 2026

Last Modified

October 25, 2026

Advisory Details (2)

Auto-updated Jun 30, 2026
Patch available. Sources: github_commit.
GitHub commit

commit fa479dafeede (SamVerschueren/decode-uri-component)

Fix landed in SamVerschueren/decode-uri-component commit fa479dafeede — awaiting tagged release

https://github.com/SamVerschueren/decode-uri-component/commit/fa479dafeede7bedf04e5c89aa78f2a78c664005
Web page

decode-uri-component/index.js at 00662938dc7c6241547ae8abce7785cc13ffd3f6 · SamVerschueren/decode-uri-component · GitHub

https://github.com/SamVerschueren/decode-uri-component/blob/00662938dc7c6241547ae8abce7785cc13ffd3f6/index.js

Patch Availability(11)

Vendor / EcosystemFix (by version range) / PatchReleasedSource
redhatsatellite/iop-vulnerability-frontend-rhel9:17857620272026-08-06redhat
redhatsatellite/iop-vulnerability-frontend-rhel9:17859373252026-08-06redhat
redhatquay/quay-rhel8:17852615062026-07-30redhat
redhatquay/quay-rhel8:17843539042026-07-21redhat
redhatrhmtc/openshift-migration-ui-rhel8:17836905322026-07-20redhat
redhatquay/quay-rhel8:17837518652026-07-20redhat
redhatquay/quay-rhel8:17837504472026-07-16redhat
redhatquay/quay-rhel9:17839558462026-07-16redhat
redhatquay/quay-rhel8:17841258382026-07-15redhat
redhatdotnet8-0-main-8.0.128-1.1.hum12026-07-10redhat
npmdecode-uri-component @ 0.5.0 (fixes <= 0.4.2)—ghsa

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

(1 across 1 ecosystem)
npm(1)
PackageVulnerable rangeFix by version rangeDependents
decode-uri-component—
  • every version up to 0.5.0: fixed in 0.5.0
—

Weakness Classification(4)

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

Additional Vendor Advisories

(1)

Vendors that published advisories for this CVE beyond the curated set above. Broader coverage but minimal per-row detail — click through for the original advisory.

Data Freshness Timeline

(refreshed 11× 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 100 of 204 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. None are among the latest 100 rows. The 104 oldest rows on record are not shown and were not checked, so the counts can still include repeats.

  1. 2026-11-02 16:45 UTCEPSS rescoreEPSS 0.5% · 43rd percentile
  2. 2026-11-01 16:34 UTCEPSS rescoreEPSS 0.5% · 43rd percentile
  3. 2026-11-01 07:48 UTCGHSA enrichmentGHSA-vcc3-ghjq-m6fr · GitHub severity MODERATE
  4. 2026-11-01 07:48 UTCEG score recompute
  5. 2026-10-31 16:32 UTCEPSS rescoreEPSS 0.5% · 43rd percentile
  6. 2026-10-30 16:34 UTCEPSS rescoreEPSS 0.5% · 43rd percentile
  7. 2026-10-29 16:33 UTCEPSS rescoreEPSS 0.5% · 43rd percentile
  8. 2026-10-29 16:19 UTCEG score recompute
  9. 2026-10-29 16:19 UTCVendor advisory
  10. 2026-10-28 16:32 UTCEPSS rescoreEPSS 0.5% · 43rd percentile
  11. 2026-10-27 16:32 UTCEPSS rescoreEPSS 0.5% · 43rd percentile
  12. 2026-10-26 16:31 UTCEPSS rescoreEPSS 0.5% · 42nd percentile
  13. 2026-10-25 21:37 UTCEG score recompute
  14. 2026-10-25 21:37 UTCVendor advisory
  15. 2026-10-25 16:33 UTCEPSS rescoreEPSS 0.5% · 42nd percentile
  16. 2026-10-25 14:25 UTCEG score recompute
  17. 2026-10-24 16:33 UTCEPSS rescoreEPSS 0.5% · 42nd percentile
  18. 2026-10-23 16:31 UTCEPSS rescoreEPSS 0.5% · 42nd percentile
  19. 2026-10-22 23:33 UTCEG score recompute
  20. 2026-10-22 23:33 UTCVendor advisory
  21. 2026-10-22 16:34 UTCEPSS rescoreEPSS 0.5% · 42nd percentile
  22. 2026-10-21 16:33 UTCEPSS rescoreEPSS 0.5% · 42nd percentile
  23. 2026-10-20 16:33 UTCEPSS rescoreEPSS 0.5% · 42nd percentile
  24. 2026-10-19 16:32 UTCEPSS rescoreEPSS 0.5% · 42nd percentile
  25. 2026-10-18 16:32 UTCEPSS rescoreEPSS 0.5% · 41st percentile
Show 75 more
  1. 2026-10-18 03:37 UTCEG score recompute
  2. 2026-10-17 16:34 UTCEPSS rescoreEPSS 0.5% · 41st percentile
  3. 2026-10-16 16:42 UTCEPSS rescoreEPSS 0.5% · 41st percentile
  4. 2026-10-15 16:32 UTCEPSS rescoreEPSS 0.5% · 41st percentile
  5. 2026-10-14 16:33 UTCEPSS rescoreEPSS 0.5% · 41st percentile
  6. 2026-10-13 18:24 UTCOSV refresh
  7. 2026-10-13 16:34 UTCEPSS rescoreEPSS 0.5% · 41st percentile
  8. 2026-10-12 16:34 UTCEPSS rescoreEPSS 0.5% · 41st percentile
  9. 2026-10-12 16:03 UTCEG score recompute
  10. 2026-10-11 19:46 UTCEG score recompute
  11. 2026-10-11 17:00 UTCEG score recompute
  12. 2026-10-11 14:26 UTCEG score recompute
  13. 2026-10-11 13:48 UTCEPSS rescoreEPSS 0.5% · 41st percentile
  14. 2026-10-10 20:00 UTCEPSS rescoreEPSS 0.5% · 41st percentile
  15. 2026-10-09 20:07 UTCEPSS rescoreEPSS 0.5% · 41st percentile
  16. 2026-10-08 17:12 UTCEPSS rescoreEPSS 0.5% · 41st percentile
  17. 2026-10-07 23:48 UTCEPSS rescoreEPSS 0.5% · 41st percentile
  18. 2026-10-06 15:18 UTCEPSS rescoreEPSS 0.5% · 41st percentile
  19. 2026-10-05 17:43 UTCEPSS rescoreEPSS 0.5% · 41st percentile
  20. 2026-10-04 23:22 UTCEPSS rescoreEPSS 0.5% · 41st percentile
  21. 2026-10-03 14:25 UTCEPSS rescoreEPSS 0.5% · 41st percentile
  22. 2026-10-01 19:50 UTCEPSS rescoreEPSS 0.5% · 41st percentile
  23. 2026-09-30 15:03 UTCEPSS rescoreEPSS 0.5% · 40th percentile
  24. 2026-09-27 13:48 UTCEPSS rescoreEPSS 0.5% · 40th percentile
  25. 2026-09-26 15:58 UTCEPSS rescoreEPSS 0.5% · 40th percentile
  26. 2026-09-23 17:53 UTCEPSS rescoreEPSS 0.5% · 42nd percentile
  27. 2026-09-23 07:25 UTCEG score recompute
  28. 2026-09-23 07:25 UTCVendor advisory
  29. 2026-09-20 20:15 UTCEPSS rescoreEPSS 0.5% · 42nd percentile
  30. 2026-09-18 19:28 UTCEPSS rescoreEPSS 0.5% · 42nd percentile
  31. 2026-09-18 06:52 UTCEG score recompute
  32. 2026-09-18 06:52 UTCVendor advisory
  33. 2026-09-17 19:31 UTCEPSS rescoreEPSS 0.5% · 42nd percentile
  34. 2026-09-16 14:08 UTCEPSS rescoreEPSS 0.5% · 42nd percentile
  35. 2026-09-16 05:15 UTCEPSS rescoreEPSS 0.5% · 41st percentile
  36. 2026-09-13 16:47 UTCEPSS rescoreEPSS 0.5% · 41st percentile
  37. 2026-09-13 14:28 UTCVendor advisory
  38. 2026-09-12 15:12 UTCEG score recompute
  39. 2026-09-12 15:12 UTCVendor advisory
  40. 2026-09-12 15:01 UTCEPSS rescoreEPSS 0.5% · 41st percentile
  41. 2026-09-11 14:53 UTCEPSS rescoreEPSS 0.5% · 41st percentile
  42. 2026-09-11 09:37 UTCEPSS rescoreEPSS 0.5% · 41st percentile
  43. 2026-09-10 09:34 UTCEPSS rescoreEPSS 0.5% · 41st percentile
  44. 2026-09-08 22:00 UTCEPSS rescoreEPSS 0.5% · 41st percentile
  45. 2026-09-07 16:01 UTCEPSS rescoreEPSS 0.5% · 41st percentile
  46. 2026-09-06 14:38 UTCEG score recompute
  47. 2026-09-06 14:38 UTCVendor advisory
  48. 2026-09-06 13:47 UTCEPSS rescoreEPSS 0.5% · 41st percentile
  49. 2026-09-04 05:06 UTCEPSS rescoreEPSS 0.5% · 41st percentile
  50. 2026-09-02 14:12 UTCEPSS rescoreEPSS 0.5% · 41st percentile
  51. 2026-09-01 13:54 UTCEPSS rescoreEPSS 0.5% · 41st percentile
  52. 2026-08-30 19:17 UTCEPSS rescoreEPSS 0.5% · 41st percentile
  53. 2026-08-30 18:17 UTCEG score recompute
  54. 2026-08-30 18:17 UTCVendor advisory
  55. 2026-08-30 01:22 UTCEPSS rescoreEPSS 0.5% · 41st percentile
  56. 2026-08-28 21:41 UTCEPSS rescoreEPSS 0.5% · 41st percentile
  57. 2026-08-27 22:44 UTCEG score recompute
  58. 2026-08-27 22:44 UTCVendor advisory
  59. 2026-08-27 14:25 UTCEPSS rescoreEPSS 0.5% · 41st percentile
  60. 2026-08-26 14:46 UTCEPSS rescoreEPSS 0.5% · 41st percentile
  61. 2026-08-25 13:49 UTCEPSS rescoreEPSS 0.5% · 40th percentile
  62. 2026-08-25 06:21 UTCEG score recompute
  63. 2026-08-25 06:21 UTCVendor advisory
  64. 2026-08-24 07:05 UTCVendor advisory
  65. 2026-08-23 07:51 UTCEG score recompute
  66. 2026-08-23 07:51 UTCVendor advisory
  67. 2026-08-23 00:19 UTCEPSS rescoreEPSS 0.3% · 21st percentile
  68. 2026-08-22 08:35 UTCEG score recompute
  69. 2026-08-22 08:35 UTCVendor advisory
  70. 2026-08-21 23:49 UTCEPSS rescoreEPSS 0.3% · 21st percentile
  71. 2026-08-21 05:43 UTCEG score recompute
  72. 2026-08-21 05:43 UTCVendor advisory
  73. 2026-08-20 22:55 UTCEPSS rescoreEPSS 0.3% · 21st percentile
  74. 2026-08-20 06:29 UTCEG score recompute
  75. 2026-08-20 06:29 UTCVendor advisory

Frequently asked(5)

What is CVE-2026-45822?
CVE-2026-45822 is a medium-severity vulnerability; its CVE record was published on June 30, 2026. decode-uri-component through 0.4.1 is vulnerable to denial of service. The decode() function splits input on '%' producing N tokens and calls decodeComponents(), exhibiting super-linear parsing time: 200 '%ab' tokens takes approximately 0.7s, 700 tokens approximately 6s, and 1400 tokens…
When was the CVE record for CVE-2026-45822 published?
The CVE record for CVE-2026-45822 was published on June 30, 2026. 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 25, 2026; the record at its source may have been updated since.
Is CVE-2026-45822 actively exploited?
CVE-2026-45822 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.5% probability of exploitation in the next 30 days (43rd percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-45822?
CVE-2026-45822 has a CVSS base score of 6.6 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-45822?
A fix for CVE-2026-45822 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2026-45822 are linked in the Vendor Advisories panel on this page.

Dependency Blast Radius

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