CVE-2026-76234

HIGHPre-NVD 7.57.5—
EchelonGraph scoreMEDIUM confidence

Score 7.5 from GitHub Security Advisory (severity: HIGH) published 2026-08-19. 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: 0.3%CVSS: 7.5Exploit: None knownExposed services: Not assessed

A fix is available — apply it.

libcrux-ecdh and libcrux-ed25519 before 0.0.6, and libcrux-psq before 0.0.7, contain cryptographic implementation bugs. libcrux-ecdh did not properly check length and clamping during X25519 secret validation (and had a broken clamping check for imported X25519 secret keys); libcrux-ed25519 performed a duplicated clamping step during key generation; and libcrux-psq panicked instead of propagating an AEADError. These were fixed in the respective patched releases.

CVSS v3
7.5
EG Score
7.5HIGHmedium confidence
EG Risk
49
EG Risk 49/100CISA SSVC

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%
CISA SSVC: Track at low or medium mission impact; Attend at high (mission-essential systems).
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
0.3%
EPSS %ILE
21st
KEV
Not listed

CISA SSVCTrack 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). Mission impact is CISA's Mission & Well-being decision point, and only you can judge it: high means the affected system is essential to your organisation's mission, or its compromise could cause irreversible harm to people. CISA's decision table

Published

August 19, 2026

Last Modified

September 24, 2026

Advisory Details (2)

Auto-updated Aug 19, 2026
Patch available. Sources: github.
generic

libcrux before 0.0.6 Cryptographic Implementation Bug Fixes | Advisories | VulnCheck

https://www.vulncheck.com/advisories/libcrux-before-cryptographic-implementation-bug-fixes
github Patch Available

Bug-Fixes in `libcrux-ecdh`, `libcrux-ed25519`, `libcrux-psq` · Advisory · celabshq/libcrux · GitHub

https://github.com/celabshq/libcrux/security/advisories/GHSA-435g-fcv3-8j26

Vendor Advisories for CVE-2026-76234(1)

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

Affected Packages

(3 across 1 ecosystem)
crates.io(3)
PackageVulnerable rangeFix by version rangeDependents
libcrux-ecdh—
  • every version up to 0.0.6: fixed in 0.0.6
  • 0.0.0-0 up to 0.0.6: fixed in 0.0.6
—
libcrux-ed25519—
  • every version up to 0.0.6: fixed in 0.0.6
  • 0.0.0-0 up to 0.0.6: fixed in 0.0.6
—
libcrux-psq—
  • every version up to 0.0.7: fixed in 0.0.7
  • 0.0.0-0 up to 0.0.7: fixed in 0.0.7
—

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 22× in last 7d / 100× 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 171 total refreshes for this CVE.

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

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-76234?
CVE-2026-76234 is a high vulnerability published on August 19, 2026. libcrux-ecdh and libcrux-ed25519 before 0.0.6, and libcrux-psq before 0.0.7, contain cryptographic implementation bugs. libcrux-ecdh did not properly check length and clamping during X25519 secret validation (and had a broken clamping check for imported X25519 secret keys); libcrux-ed25519…
When was CVE-2026-76234 disclosed?
CVE-2026-76234 was first published on August 19, 2026, with the most recent update on September 24, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-76234 actively exploited?
CVE-2026-76234 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.3% probability of exploitation in the next 30 days (21st percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-76234?
CVE-2026-76234 has a CVSS base score of 7.5 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-76234?
A fix for CVE-2026-76234 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2026-76234 are linked in the Vendor Advisories panel on this page.

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