CVE-2026-76234libcrux before 0.0.6 Cryptographic Implementation Bug Fixes
Updated under an hour ago ()
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It affects celabshq libcrux-ecdh and 2 other products. Add what you run to find out whether that includes you.
No exploitation reported and no EPSS estimate yet.
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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
- 7.5 HIGH (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- Weakness (CWE)
- CWE-347
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- VulnCheck
- NVD analysis
- Deferred
- Record last updated
- Aug 21, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
celabshq libcrux-ecdh celabshq:libcrux_ecdh (from the name) | before 0.0.6; 0.0.6 not affected | CNA record |
celabshq libcrux-ed25519 celabshq:libcrux_ed25519 (from the name) | before 0.0.6; 0.0.6 not affected | CNA record |
celabshq libcrux-psq celabshq:libcrux_psq (from the name) | before 0.0.7; 0.0.7 not affected | CNA record |
References
- https://github.com/celabshq/libcrux/security/advisories/GHSA-435g-fcv3-8j26vendor-advisory
- https://www.vulncheck.com/advisories/libcrux-before-cryptographic-implementation-bug-fixesthird-party-advisory
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.