CVE-2026-81680

MEDIUMNVD 5.35.3—
EchelonGraph scoreMEDIUM confidence

This medium-severity CVE scores 5.3 under NVD CVSS v3. EPSS exploit probability: 0.1%, top 96% of all CVEs by exploit prediction. GitHub Security Advisory enrichment pending alignment with NVD CVSS.

Triggered by: NVD CVSS baseline
Sources: epss, ghsa, nvd
Trending — 3 sources updated this week
5.3EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 5.3Exploit: 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 1.4.9 fail to authenticate recovery-slot presence in envelope-format encrypted files, allowing attackers to remove recovery slots without re-encrypting the payload. Attackers can modify the file header to delete recovery-slot fields and bypass authentication, silently removing recovery paths the owner deliberately added.

CVSS v3
5.3
EG Score
5.3(medium)
EG Risk
24(Track)
EG Risk 24/100SSVC: 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
Severity53% × 45%
Exploitation0% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
4%
KEV
Not listed

Published

August 27, 2026

Last Modified

September 3, 2026

Advisory Details (2)

Auto-updated Aug 27, 2026
Patch available. Sources: github.
generic

openssl_encrypt before 1.4.9 Authentication Bypass via Recovery Slot Removal | Advisories | VulnCheck

https://www.vulncheck.com/advisories/openssl-encrypt-before-1.4.9-authentication-bypass-via-recovery-slot-removal
github Patch Available

Recovery-slot presence was not authenticated; recovery slots could be stripped from an envelope file undetected · Advisory · jahlives/openssl_encrypt · GitHub

https://github.com/jahlives/openssl_encrypt/security/advisories/GHSA-grhj-cpmg-f5mx

Vendor Advisories for CVE-2026-81680(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 ... 1.4.8 (53 versions)1.4.9—

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 17× in last 7d / 64× 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. 2026-09-18 19:28 UTCEPSS rescore
  2. 2026-09-18 16:21 UTCEG score recompute
  3. 2026-09-18 16:21 UTCGHSA enrichment
  4. 2026-09-17 14:33 UTCEG score recompute
  5. 2026-09-17 14:33 UTCGHSA enrichment
  6. 2026-09-16 14:08 UTCEPSS rescore
  7. 2026-09-16 12:45 UTCEG score recompute
  8. 2026-09-16 12:45 UTCGHSA enrichment
  9. 2026-09-16 05:15 UTCEPSS rescore
  10. 2026-09-15 11:07 UTCEG score recompute
  11. 2026-09-15 11:07 UTCGHSA enrichment
  12. 2026-09-15 03:12 UTCEPSS rescore
  13. 2026-09-15 03:12 UTCEPSS rescore
  14. 2026-09-14 08:51 UTCEG score recompute
  15. 2026-09-14 08:51 UTCGHSA enrichment
  16. 2026-09-13 07:13 UTCEG score recompute
  17. 2026-09-13 07:13 UTCGHSA enrichment
  18. 2026-09-12 05:35 UTCEG score recompute
  19. 2026-09-12 05:35 UTCGHSA enrichment
  20. 2026-09-11 03:57 UTCEG score recompute
  21. 2026-09-11 03:57 UTCGHSA enrichment
  22. 2026-09-10 02:19 UTCGHSA enrichment
  23. 2026-09-09 00:41 UTCEG score recompute
  24. 2026-09-09 00:41 UTCGHSA enrichment
  25. 2026-09-08 22:01 UTCEPSS rescore
Show 39 more
  1. 2026-09-07 21:45 UTCEG score recompute
  2. 2026-09-07 21:45 UTCGHSA enrichment
  3. 2026-09-06 20:08 UTCEG score recompute
  4. 2026-09-06 20:08 UTCGHSA enrichment
  5. 2026-09-06 13:48 UTCEPSS rescore
  6. 2026-09-05 18:28 UTCEG score recompute
  7. 2026-09-05 18:28 UTCGHSA enrichment
  8. 2026-09-05 15:31 UTCEPSS rescore
  9. 2026-09-04 16:50 UTCEG score recompute
  10. 2026-09-04 16:50 UTCGHSA enrichment
  11. 2026-09-04 05:07 UTCEPSS rescore
  12. 2026-09-03 15:11 UTCEG score recompute▲ 1.30
  13. 2026-09-03 15:11 UTCGHSA enrichment
  14. 2026-09-03 15:09 UTCNVD updateCVSS v3 → 5.3
  15. 2026-09-03 03:28 UTCEG score recompute
  16. 2026-09-03 03:28 UTCGHSA enrichment
  17. 2026-09-02 14:12 UTCEPSS rescore
  18. 2026-09-02 01:40 UTCEG score recompute
  19. 2026-09-02 01:40 UTCGHSA enrichment
  20. 2026-09-01 13:54 UTCEPSS rescore
  21. 2026-09-01 04:40 UTCEPSS rescore
  22. 2026-09-01 04:40 UTCEPSS rescore
  23. 2026-08-31 23:59 UTCGHSA enrichment
  24. 2026-08-30 22:21 UTCEG score recompute
  25. 2026-08-30 22:21 UTCGHSA enrichment
  26. 2026-08-30 19:18 UTCEPSS rescore
  27. 2026-08-30 19:17 UTCEPSS rescore
  28. 2026-08-30 01:22 UTCEPSS rescore
  29. 2026-08-29 20:43 UTCEG score recompute
  30. 2026-08-29 20:43 UTCGHSA enrichment
  31. 2026-08-28 21:42 UTCEPSS rescore
  32. 2026-08-28 19:04 UTCGHSA enrichment
  33. 2026-08-27 20:27 UTCEG score recompute
  34. 2026-08-27 20:27 UTCGHSA enrichment
  35. 2026-08-27 20:18 UTCEG score recompute
  36. 2026-08-27 20:18 UTCGHSA enrichment
  37. 2026-08-27 17:25 UTCEG score recompute
  38. 2026-08-27 16:47 UTCEG score recompute
  39. 2026-08-27 16:43 UTCMITRE cvelistV5first tracked

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-81680?
CVE-2026-81680 is a medium vulnerability published on August 27, 2026. openssl_encrypt versions before 1.4.9 fail to authenticate recovery-slot presence in envelope-format encrypted files, allowing attackers to remove recovery slots without re-encrypting the payload. Attackers can modify the file header to delete recovery-slot fields and bypass authentication,…
When was CVE-2026-81680 disclosed?
CVE-2026-81680 was first published in the National Vulnerability Database on August 27, 2026, with the most recent update on September 3, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-81680 actively exploited?
CVE-2026-81680 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 95.8% of all scored CVEs.
What is the CVSS score of CVE-2026-81680?
CVE-2026-81680 has a CVSS v3 base score of 5.3 (NVD).
How do I remediate CVE-2026-81680?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-81680, 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-2026-81680

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