CVE-2026-74872

CRITICALPre-NVD 9.89.8—
EchelonGraph scoreHIGH 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 — 4 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 an arbitrary code execution vulnerability in the Whirlpool hash implementation that uses broad glob patterns to load .so modules without integrity verification. Attackers can place malicious .so files matching the whirlpool*py313*.so pattern in site-packages directories to achieve native code execution when the module is loaded.

CVSS v3
9.8
EG Score
9.8(high)
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
38%
KEV
Not listed

Published

August 17, 2026

Last Modified

August 18, 2026

Advisory Details (2)

Auto-updated Aug 18, 2026
Patch available. Sources: github.
generic

openssl_encrypt before 1.4.0 Arbitrary Code Execution via Whirlpool | Advisories | VulnCheck

https://www.vulncheck.com/advisories/openssl-encrypt-before-arbitrary-code-execution-via-whirlpool
github Patch Available

Dynamic .so loading for Whirlpool uses broad glob pattern without integrity verification · Advisory · jahlives/openssl_encrypt · GitHub

https://github.com/jahlives/openssl_encrypt/security/advisories/GHSA-j48q-4c78-rhf9

Vendor Advisories for CVE-2026-74872(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 35× in last 7d / 35× 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.

  1. 2026-08-21 05:04 UTCGHSA enrichment
  2. 2026-08-21 00:58 UTCEG score recompute
  3. 2026-08-21 00:58 UTCGHSA enrichment
  4. 2026-08-20 22:56 UTCEPSS rescore
  5. 2026-08-20 20:53 UTCGHSA enrichment
  6. 2026-08-20 16:47 UTCGHSA enrichment
  7. 2026-08-20 12:26 UTCGHSA enrichment
  8. 2026-08-20 08:20 UTCGHSA enrichment
  9. 2026-08-20 04:14 UTCGHSA enrichment
  10. 2026-08-20 00:07 UTCGHSA enrichment
  11. 2026-08-19 20:02 UTCEG score recompute
  12. 2026-08-19 20:02 UTCGHSA enrichment
  13. 2026-08-19 17:04 UTCEPSS rescore
  14. 2026-08-19 15:56 UTCGHSA enrichment
  15. 2026-08-19 11:49 UTCGHSA enrichment
  16. 2026-08-19 07:43 UTCGHSA enrichment
  17. 2026-08-19 03:37 UTCGHSA enrichment
  18. 2026-08-18 23:32 UTCGHSA enrichment
  19. 2026-08-18 19:26 UTCGHSA enrichment
  20. 2026-08-18 15:18 UTCEG score recompute
  21. 2026-08-18 15:18 UTCGHSA enrichment
  22. 2026-08-18 14:51 UTCEG score recompute
  23. 2026-08-18 14:51 UTCGHSA enrichment
  24. 2026-08-18 13:49 UTCEPSS rescore
  25. 2026-08-18 13:49 UTCEPSS rescore
Show 10 more
  1. 2026-08-18 12:24 UTCGHSA enrichment
  2. 2026-08-18 08:14 UTCGHSA enrichment
  3. 2026-08-18 04:03 UTCGHSA enrichment
  4. 2026-08-17 23:57 UTCGHSA enrichment
  5. 2026-08-17 19:51 UTCGHSA enrichment
  6. 2026-08-17 15:45 UTCEG score recompute
  7. 2026-08-17 15:45 UTCGHSA enrichment
  8. 2026-08-17 11:40 UTCEG score recompute
  9. 2026-08-17 11:13 UTCEG score recompute
  10. 2026-08-17 11:12 UTCMITRE cvelistV5first tracked

Frequently asked(5)

What is CVE-2026-74872?
CVE-2026-74872 is a critical vulnerability published on August 17, 2026. openssl_encrypt versions before 1.4.0 contain an arbitrary code execution vulnerability in the Whirlpool hash implementation that uses broad glob patterns to load .so modules without integrity verification. Attackers can place malicious .so files matching the whirlpoolpy313.so pattern in…
When was CVE-2026-74872 disclosed?
CVE-2026-74872 was first published in the National Vulnerability Database on August 17, 2026, with the most recent update on August 18, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-74872 actively exploited?
CVE-2026-74872 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 61.7% of all scored CVEs.
What is the CVSS score of CVE-2026-74872?
CVE-2026-74872 has a CVSS v3 base score of 9.8 (NVD).
How do I remediate CVE-2026-74872?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-74872, 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

See which npm, PyPI, Go, and Maven packages are affected by CVE-2026-74872

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