CVE-2026-74882

CRITICALNVD 9.19.1
EchelonGraph scoreMEDIUM confidence

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

This critical-severity CVE scores 9.1 under NVD CVSS v3. EPSS exploit probability: 0.2% (5th percentile of EPSS-scored CVEs). GitHub Security Advisory CVSS 7.5 is lower than this score; a lower GitHub score revises it only when its advisory is newer than the CVE record's last change, and this advisory (published 2026-08-17) is not newer than that change (2026-10-01), so it does not.

Triggered by: Headline CVSS from NVD CVSS v3
Sources: EPSS, GitHub Security Advisory, NVD CVSS v3
Trending — 3 sources updated this week

Also known asEUVD-2026-60101 (ENISA EUVD) · GHSA-24vg-mjm2-36jv (GitHub Security Advisories)Source: ENISA EUVD

9.1EG
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).
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0.2%CVSS: 9.1Exploit: None knownExposed services: Not assessed

A fix is available — apply it.

openssl_encrypt versions before 1.4.0 contain an insecure default configuration that trusts the entire RFC 1918 private address space in IntegrityProxyConfig trusted_proxies. Attackers on private networks can forge client certificate headers to bypass mTLS authentication when ProxyAuth validation is relaxed or modified.

CVSS v3
9.1
EG Score
9.1CRITICALmedium confidence
EG Risk
56
EG Risk 56/100

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)
Severity91% × 45%
Impact severity (EG Severity): CVSS 9.1 of 10. Never the KEV-floored or EPSS-lifted EG Score.
Exploitation0.2% × 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
0.2%
EPSS %ILE
5th
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 (9.1): severity, escalated by confirmed exploitation. This CVE's 9.1 is its impact severity (EG Severity), not escalated.

EG Severity
9.1 CRITICALCVSS-B, impact only: no KEV listing, EPSS or EG-KEV tier raises it.NVD CVSS v3 · CVSS v3.0 or v3.1
EG Likelihood
0.2% within 30 daysSource: FIRST EPSS (model v2026.06.15, score date 2026-11-01). 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

August 17, 2026

Last Modified

October 1, 2026

Advisory Details (2)

Auto-updated Sep 15, 2026
Patch available. Sources: github.
Web page

openssl_encrypt before 1.4.0 Insecure Default Configuration | Advisories | VulnCheck

https://www.vulncheck.com/advisories/openssl-encrypt-before-insecure-default-configuration
GitHub advisoryMentions a patch (unverified)

Integrity proxy trusts entire RFC 1918 private address space by default · Advisory · jahlives/openssl_encrypt · GitHub

https://github.com/jahlives/openssl_encrypt/security/advisories/GHSA-2592-7m3g-7fq6

Vendor Advisories for CVE-2026-74882(1)

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

Affected Packages

(1 across 1 ecosystem)
PyPI(1)
PackageVulnerable rangeFix by version rangeDependents
openssl-encrypt0.2.2 ... 1.4.0b8 (44 versions)
  • every version up to 1.4.0: fixed in 1.4.0
—

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 23× in last 7d / 101× 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 381 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 281 oldest rows on record are not shown and were not checked, so the counts can still include repeats.

  1. 2026-11-01 22:29 UTCEG score recompute
  2. 2026-11-01 22:28 UTCGHSA enrichmentGHSA-24vg-mjm2-36jv · GitHub severity HIGH · GitHub CVSS 7.5
  3. 2026-11-01 16:35 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  4. 2026-11-01 00:51 UTCEG score recompute
  5. 2026-11-01 00:51 UTCGHSA enrichmentGHSA-24vg-mjm2-36jv · GitHub severity HIGH · GitHub CVSS 7.5
  6. 2026-10-31 16:33 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  7. 2026-10-31 03:14 UTCEG score recompute
  8. 2026-10-31 03:14 UTCGHSA enrichmentGHSA-24vg-mjm2-36jv · GitHub severity HIGH · GitHub CVSS 7.5
  9. 2026-10-30 16:35 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  10. 2026-10-30 05:37 UTCEG score recompute
  11. 2026-10-30 05:37 UTCGHSA enrichmentGHSA-24vg-mjm2-36jv · GitHub severity HIGH · GitHub CVSS 7.5
  12. 2026-10-29 16:34 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  13. 2026-10-29 08:00 UTCEG score recompute
  14. 2026-10-29 07:59 UTCGHSA enrichmentGHSA-24vg-mjm2-36jv · GitHub severity HIGH · GitHub CVSS 7.5
  15. 2026-10-28 16:33 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  16. 2026-10-28 10:22 UTCEG score recompute
  17. 2026-10-28 10:22 UTCGHSA enrichmentGHSA-24vg-mjm2-36jv · GitHub severity HIGH · GitHub CVSS 7.5
  18. 2026-10-27 16:32 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  19. 2026-10-27 11:50 UTCEG score recompute
  20. 2026-10-27 11:50 UTCGHSA enrichmentGHSA-24vg-mjm2-36jv · GitHub severity HIGH · GitHub CVSS 7.5
  21. 2026-10-26 16:32 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  22. 2026-10-26 14:13 UTCEG score recompute
  23. 2026-10-26 14:12 UTCGHSA enrichmentGHSA-24vg-mjm2-36jv · GitHub severity HIGH · GitHub CVSS 7.5
  24. 2026-10-25 16:34 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  25. 2026-10-25 16:06 UTCGHSA enrichmentGHSA-24vg-mjm2-36jv · GitHub severity HIGH · GitHub CVSS 7.5
Show 75 more
  1. 2026-10-25 14:03 UTCEG score recompute
  2. 2026-10-24 18:26 UTCEG score recompute
  3. 2026-10-24 18:26 UTCGHSA enrichmentGHSA-24vg-mjm2-36jv · GitHub severity HIGH · GitHub CVSS 7.5
  4. 2026-10-24 16:33 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  5. 2026-10-23 20:48 UTCEG score recompute
  6. 2026-10-23 20:48 UTCGHSA enrichmentGHSA-24vg-mjm2-36jv · GitHub severity HIGH · GitHub CVSS 7.5
  7. 2026-10-23 16:32 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  8. 2026-10-22 22:47 UTCEG score recompute
  9. 2026-10-22 22:47 UTCGHSA enrichmentGHSA-24vg-mjm2-36jv · GitHub severity HIGH · GitHub CVSS 7.5
  10. 2026-10-22 16:35 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  11. 2026-10-22 00:52 UTCEG score recompute
  12. 2026-10-22 00:52 UTCGHSA enrichmentGHSA-24vg-mjm2-36jv · GitHub severity HIGH · GitHub CVSS 7.5
  13. 2026-10-21 16:33 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  14. 2026-10-21 02:48 UTCEG score recompute
  15. 2026-10-21 02:48 UTCGHSA enrichmentGHSA-24vg-mjm2-36jv · GitHub severity HIGH · GitHub CVSS 7.5
  16. 2026-10-20 16:33 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  17. 2026-10-20 05:09 UTCEG score recompute
  18. 2026-10-20 05:09 UTCGHSA enrichmentGHSA-24vg-mjm2-36jv · GitHub severity HIGH · GitHub CVSS 7.5
  19. 2026-10-19 16:33 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  20. 2026-10-19 06:18 UTCEG score recompute
  21. 2026-10-19 06:17 UTCGHSA enrichmentGHSA-24vg-mjm2-36jv · GitHub severity HIGH · GitHub CVSS 7.5
  22. 2026-10-18 16:32 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  23. 2026-10-18 08:37 UTCGHSA enrichmentGHSA-24vg-mjm2-36jv · GitHub severity HIGH · GitHub CVSS 7.5
  24. 2026-10-18 03:13 UTCEG score recompute
  25. 2026-10-17 16:35 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  26. 2026-10-17 09:47 UTCEG score recompute
  27. 2026-10-17 09:47 UTCGHSA enrichmentGHSA-24vg-mjm2-36jv · GitHub severity HIGH · GitHub CVSS 7.5
  28. 2026-10-16 16:44 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  29. 2026-10-16 11:48 UTCEG score recompute
  30. 2026-10-16 11:47 UTCGHSA enrichmentGHSA-24vg-mjm2-36jv · GitHub severity HIGH · GitHub CVSS 7.5
  31. 2026-10-15 16:32 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  32. 2026-10-15 12:44 UTCEG score recompute
  33. 2026-10-15 12:44 UTCGHSA enrichmentGHSA-24vg-mjm2-36jv · GitHub severity HIGH · GitHub CVSS 7.5
  34. 2026-10-14 16:33 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  35. 2026-10-14 08:02 UTCEG score recompute
  36. 2026-10-14 08:02 UTCGHSA enrichmentGHSA-24vg-mjm2-36jv · GitHub severity HIGH · GitHub CVSS 7.5
  37. 2026-10-13 16:35 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  38. 2026-10-13 03:15 UTCEG score recompute
  39. 2026-10-13 03:15 UTCGHSA enrichmentGHSA-24vg-mjm2-36jv · GitHub severity HIGH · GitHub CVSS 7.5
  40. 2026-10-12 16:35 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  41. 2026-10-12 15:39 UTCEG score recompute
  42. 2026-10-12 05:37 UTCGHSA enrichmentGHSA-24vg-mjm2-36jv · GitHub severity HIGH · GitHub CVSS 7.5
  43. 2026-10-11 19:25 UTCEG score recompute
  44. 2026-10-11 16:41 UTCEG score recompute
  45. 2026-10-11 14:00 UTCEG score recompute
  46. 2026-10-11 13:49 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  47. 2026-10-10 20:00 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  48. 2026-10-09 20:07 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  49. 2026-10-08 17:13 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  50. 2026-10-07 23:48 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  51. 2026-10-07 11:28 UTCGHSA enrichmentGHSA-24vg-mjm2-36jv · GitHub severity HIGH · GitHub CVSS 7.5
  52. 2026-10-07 05:25 UTCGHSA enrichmentGHSA-24vg-mjm2-36jv · GitHub severity HIGH · GitHub CVSS 7.5
  53. 2026-10-07 01:30 UTCGHSA enrichmentGHSA-24vg-mjm2-36jv · GitHub severity HIGH · GitHub CVSS 7.5
  54. 2026-10-06 21:51 UTCGHSA enrichmentGHSA-24vg-mjm2-36jv · GitHub severity HIGH · GitHub CVSS 7.5
  55. 2026-10-06 17:10 UTCEG score recompute
  56. 2026-10-06 17:10 UTCGHSA enrichmentGHSA-24vg-mjm2-36jv · GitHub severity HIGH · GitHub CVSS 7.5
  57. 2026-10-06 15:18 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  58. 2026-10-06 12:58 UTCGHSA enrichmentGHSA-24vg-mjm2-36jv · GitHub severity HIGH · GitHub CVSS 7.5
  59. 2026-10-06 09:04 UTCEG score recompute
  60. 2026-10-06 09:04 UTCGHSA enrichmentGHSA-24vg-mjm2-36jv · GitHub severity HIGH · GitHub CVSS 7.5
  61. 2026-10-05 17:43 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  62. 2026-10-05 17:25 UTCGHSA enrichmentGHSA-24vg-mjm2-36jv · GitHub severity HIGH · GitHub CVSS 7.5
  63. 2026-10-05 11:56 UTCGHSA enrichmentGHSA-24vg-mjm2-36jv · GitHub severity HIGH · GitHub CVSS 7.5
  64. 2026-10-05 06:40 UTCGHSA enrichmentGHSA-24vg-mjm2-36jv · GitHub severity HIGH · GitHub CVSS 7.5
  65. 2026-10-05 01:58 UTCEG score recompute
  66. 2026-10-05 01:58 UTCGHSA enrichmentGHSA-24vg-mjm2-36jv · GitHub severity HIGH · GitHub CVSS 7.5
  67. 2026-10-04 23:22 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  68. 2026-10-04 21:51 UTCGHSA enrichmentGHSA-24vg-mjm2-36jv · GitHub severity HIGH · GitHub CVSS 7.5
  69. 2026-10-04 16:25 UTCGHSA enrichmentGHSA-24vg-mjm2-36jv · GitHub severity HIGH · GitHub CVSS 7.5
  70. 2026-10-04 11:45 UTCGHSA enrichmentGHSA-24vg-mjm2-36jv · GitHub severity HIGH · GitHub CVSS 7.5
  71. 2026-10-04 06:54 UTCGHSA enrichmentGHSA-24vg-mjm2-36jv · GitHub severity HIGH · GitHub CVSS 7.5
  72. 2026-10-04 03:15 UTCGHSA enrichmentGHSA-24vg-mjm2-36jv · GitHub severity HIGH · GitHub CVSS 7.5
  73. 2026-10-03 21:30 UTCGHSA enrichmentGHSA-24vg-mjm2-36jv · GitHub severity HIGH · GitHub CVSS 7.5
  74. 2026-10-03 17:50 UTCEG score recompute
  75. 2026-10-03 17:50 UTCGHSA enrichmentGHSA-24vg-mjm2-36jv · GitHub severity HIGH · GitHub CVSS 7.5

Frequently asked(5)

What is CVE-2026-74882?
CVE-2026-74882 is a critical-severity vulnerability; its CVE record was published on August 17, 2026. openssl_encrypt versions before 1.4.0 contain an insecure default configuration that trusts the entire RFC 1918 private address space in IntegrityProxyConfig trusted_proxies. Attackers on private networks can forge client certificate headers to bypass mTLS authentication when ProxyAuth validation…
When was CVE-2026-74882 made public?
CVE-2026-74882 was made public on February 10, 2026: that is the date its CVE record's CNA, VulnCheck, gives for when the vulnerability was made public. The CVE record itself was published on August 17, 2026. EchelonGraph's copy of the record carries a last-modified date of October 1, 2026; the record at its source may have been updated since.
Is CVE-2026-74882 actively exploited?
CVE-2026-74882 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.2% probability of exploitation in the next 30 days (5th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-74882?
CVE-2026-74882 has a CVSS v3 base score of 9.1 (NVD).
How do I remediate CVE-2026-74882?
A fix for CVE-2026-74882 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2026-74882 are linked in the Vendor Advisories panel on this page.

Dependency Blast Radius

See which npm, PyPI, Go, and Maven packages are affected by CVE-2026-74882

Explore →

Is Your Infrastructure Affected by CVE-2026-74882?

EchelonGraph automatically scans your cloud infrastructure and maps CVE exposure using blast radius analysis.