CVE-2026-74886

CRITICALPre-NVD 9.89.8—
EchelonGraph scoreMEDIUM confidence

Score 9.8 from GitHub Security Advisory (severity: CRITICAL) published 2026-08-17. a secondary CVSS source baseline 9.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 3 sources updated this week
9.8EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 9.8Exploit: None knownExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

openssl_encrypt versions before 1.4.0 contain a plugin sandbox bypass vulnerability where the PluginImportGuard blocks a different set of modules than the AST analyzer's DANGEROUS_MODULES set. Attackers can bypass AST analysis through string obfuscation or encoding to import unblocked dangerous modules like sys, shutil, multiprocessing, importlib, and pickle for arbitrary code execution.

CVSS v3
9.8
EG Score
9.8(medium)
EG Risk
59(Track)
EG Risk 59/100SSVC: Track

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity98% × 45%
Exploitation0% × 40%
Automatability100% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
31%
KEV
Not listed

Published

August 17, 2026

Last Modified

September 1, 2026

Advisory Details (2)

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

openssl_encrypt before 1.4.0 Plugin Import Guard Bypass | Advisories | VulnCheck

https://www.vulncheck.com/advisories/openssl-encrypt-before-plugin-import-guard-bypass
github Patch Available

Plugin import guard blocked modules not synchronized with AST analyzer · Advisory · jahlives/openssl_encrypt · GitHub

https://github.com/jahlives/openssl_encrypt/security/advisories/GHSA-9pgj-v69p-q586

Vendor Advisories for CVE-2026-74886(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 rangeFixed inDependents
openssl-encrypt0.2.2 ... 1.4.0b8 (44 versions)1.4.0—

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 52× in last 7d / 225× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. 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. Most recent first.

Showing the most recent 100 of 253 total refreshes for this CVE.

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

Frequently asked(5)

What is CVE-2026-74886?
CVE-2026-74886 is a critical vulnerability published on August 17, 2026. opensslencrypt versions before 1.4.0 contain a plugin sandbox bypass vulnerability where the PluginImportGuard blocks a different set of modules than the AST analyzer's DANGEROUSMODULES set. Attackers can bypass AST analysis through string obfuscation or encoding to import unblocked dangerous…
When was CVE-2026-74886 disclosed?
CVE-2026-74886 was first published in the National Vulnerability Database on August 17, 2026, with the most recent update on September 1, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-74886 actively exploited?
CVE-2026-74886 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0% probability of exploitation in the next 30 days, which ranks it in the top 68.5% of all scored CVEs.
What is the CVSS score of CVE-2026-74886?
CVE-2026-74886 has a CVSS v3 base score of 9.8 (NVD).
How do I remediate CVE-2026-74886?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-74886, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

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