CVE-2026-81693

HIGHPre-NVD 7.57.5—
EchelonGraph scoreHIGH confidence

Score 7.5 from GitHub Security Advisory (severity: HIGH) published 2026-08-27. a secondary CVSS source baseline 7.5; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 3 sources updated this week
7.5EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 7.5Exploit: None knownExposed: 0

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

openssl_encrypt before 1.4.9 fails to validate the total field from QR JSON payloads before materializing ranges. Attackers can supply crafted QR images with extremely large total values to trigger unbounded memory allocation and cause denial of service through out-of-memory conditions.

CVSS v3
7.5
EG Score
7.5(high)
EG Risk
49(Track)
EG Risk 49/100SSVC: 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
Severity75% × 45%
Exploitation0% × 40%
Automatability100% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
28%
KEV
Not listed

Published

August 27, 2026

Last Modified

September 2, 2026

Advisory Details (2)

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

openssl_encrypt before 1.4.9 Denial of Service via QR total field | Advisories | VulnCheck

https://www.vulncheck.com/advisories/openssl-encrypt-before-1.4.9-denial-of-service-via-qr-total-field
github Patch Available

QR total field drives unbounded set/range materialization · Advisory · jahlives/openssl_encrypt · GitHub

https://github.com/jahlives/openssl_encrypt/security/advisories/GHSA-r23m-gf2m-8www

Vendor Advisories for CVE-2026-81693(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 24× in last 7d / 87× 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. 2026-09-19 07:13 UTCEG score recompute
  2. 2026-09-19 07:13 UTCGHSA enrichment
  3. 2026-09-18 19:28 UTCEPSS rescore
  4. 2026-09-18 18:18 UTCGHSA enrichment
  5. 2026-09-18 05:12 UTCEG score recompute
  6. 2026-09-18 05:12 UTCGHSA enrichment
  7. 2026-09-17 16:18 UTCGHSA enrichment
  8. 2026-09-17 03:23 UTCGHSA enrichment
  9. 2026-09-16 14:28 UTCEG score recompute
  10. 2026-09-16 14:28 UTCGHSA enrichment
  11. 2026-09-16 14:08 UTCEPSS rescore
  12. 2026-09-16 05:15 UTCEPSS rescore
  13. 2026-09-16 01:28 UTCGHSA enrichment
  14. 2026-09-15 12:34 UTCEG score recompute
  15. 2026-09-15 12:34 UTCGHSA enrichment
  16. 2026-09-15 03:12 UTCEPSS rescore
  17. 2026-09-15 03:12 UTCEPSS rescore
  18. 2026-09-14 23:38 UTCGHSA enrichment
  19. 2026-09-14 10:04 UTCGHSA enrichment
  20. 2026-09-13 21:09 UTCEG score recompute
  21. 2026-09-13 21:09 UTCGHSA enrichment
  22. 2026-09-13 08:14 UTCGHSA enrichment
  23. 2026-09-12 19:20 UTCEG score recompute
  24. 2026-09-12 19:20 UTCGHSA enrichment
  25. 2026-09-12 06:25 UTCGHSA enrichment
Show 62 more
  1. 2026-09-11 17:30 UTCEG score recompute
  2. 2026-09-11 17:30 UTCGHSA enrichment
  3. 2026-09-11 14:53 UTCEPSS rescore
  4. 2026-09-11 14:53 UTCEPSS rescore
  5. 2026-09-11 04:35 UTCGHSA enrichment
  6. 2026-09-10 15:40 UTCEG score recompute
  7. 2026-09-10 15:40 UTCGHSA enrichment
  8. 2026-09-10 02:45 UTCGHSA enrichment
  9. 2026-09-09 13:49 UTCGHSA enrichment
  10. 2026-09-09 00:41 UTCEG score recompute
  11. 2026-09-09 00:41 UTCGHSA enrichment
  12. 2026-09-08 22:01 UTCEPSS rescore
  13. 2026-09-08 11:24 UTCGHSA enrichment
  14. 2026-09-07 22:30 UTCEG score recompute
  15. 2026-09-07 22:30 UTCGHSA enrichment
  16. 2026-09-07 09:34 UTCGHSA enrichment
  17. 2026-09-06 20:40 UTCEG score recompute
  18. 2026-09-06 20:40 UTCGHSA enrichment
  19. 2026-09-06 13:48 UTCEPSS rescore
  20. 2026-09-06 07:45 UTCGHSA enrichment
  21. 2026-09-05 18:49 UTCEG score recompute
  22. 2026-09-05 18:49 UTCGHSA enrichment
  23. 2026-09-05 15:31 UTCEPSS rescore
  24. 2026-09-05 05:55 UTCGHSA enrichment
  25. 2026-09-04 17:00 UTCEG score recompute
  26. 2026-09-04 17:00 UTCGHSA enrichment
  27. 2026-09-04 05:07 UTCEPSS rescore
  28. 2026-09-04 04:04 UTCGHSA enrichment
  29. 2026-09-03 15:09 UTCGHSA enrichment
  30. 2026-09-03 02:12 UTCEG score recompute
  31. 2026-09-03 02:12 UTCGHSA enrichment
  32. 2026-09-02 14:12 UTCEPSS rescore
  33. 2026-09-02 13:13 UTCGHSA enrichment
  34. 2026-09-02 02:32 UTCEG score recompute
  35. 2026-09-02 02:31 UTCGHSA enrichment
  36. 2026-09-01 13:54 UTCEPSS rescore
  37. 2026-09-01 13:33 UTCEG score recompute
  38. 2026-09-01 13:33 UTCGHSA enrichment
  39. 2026-09-01 04:40 UTCEPSS rescore
  40. 2026-09-01 04:40 UTCEPSS rescore
  41. 2026-09-01 00:38 UTCGHSA enrichment
  42. 2026-08-31 11:40 UTCGHSA enrichment
  43. 2026-08-30 22:45 UTCEG score recompute
  44. 2026-08-30 22:45 UTCGHSA enrichment
  45. 2026-08-30 19:18 UTCEPSS rescore
  46. 2026-08-30 19:17 UTCEPSS rescore
  47. 2026-08-30 09:51 UTCEG score recompute
  48. 2026-08-30 09:51 UTCGHSA enrichment
  49. 2026-08-30 01:22 UTCEPSS rescore
  50. 2026-08-29 20:54 UTCGHSA enrichment
  51. 2026-08-29 07:59 UTCEG score recompute
  52. 2026-08-29 07:59 UTCGHSA enrichment
  53. 2026-08-28 21:42 UTCEPSS rescore
  54. 2026-08-28 19:03 UTCGHSA enrichment
  55. 2026-08-28 09:24 UTCGHSA enrichment
  56. 2026-08-27 20:27 UTCEG score recompute
  57. 2026-08-27 20:27 UTCGHSA enrichment
  58. 2026-08-27 20:18 UTCEG score recompute
  59. 2026-08-27 20:18 UTCGHSA enrichment
  60. 2026-08-27 17:25 UTCEG score recompute
  61. 2026-08-27 16:47 UTCEG score recompute
  62. 2026-08-27 16:43 UTCMITRE cvelistV5first tracked

Frequently asked(5)

What is CVE-2026-81693?
CVE-2026-81693 is a high vulnerability published on August 27, 2026. openssl_encrypt before 1.4.9 fails to validate the total field from QR JSON payloads before materializing ranges. Attackers can supply crafted QR images with extremely large total values to trigger unbounded memory allocation and cause denial of service through out-of-memory conditions.
When was CVE-2026-81693 disclosed?
CVE-2026-81693 was first published in the National Vulnerability Database on August 27, 2026, with the most recent update on September 2, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-81693 actively exploited?
CVE-2026-81693 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 72.1% of all scored CVEs.
What is the CVSS score of CVE-2026-81693?
CVE-2026-81693 has a CVSS v3 base score of 7.5 (NVD).
How do I remediate CVE-2026-81693?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-81693, 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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