CVE-2026-76234: libcrux before 0.0.6 Cryptographic Implementation Bug Fixes
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.
Affected Software
Remediation
Recommended actions to resolve this vulnerability, in priority order.
- Upgrade
Upgrade
libcrux-ecdhto a version that resolves this vulnerability.Fixed in 0.0.6 - Upgrade
Upgrade
libcrux-ed25519to a version that resolves this vulnerability.Fixed in 0.0.6 - Upgrade
Upgrade
libcrux-psqto a version that resolves this vulnerability.Fixed in 0.0.7
Event History
Frequently Asked Questions
Which releases contain the fixes?
Upgrade libcrux-ecdh and libcrux-ed25519 to 0.0.6 or later, and libcrux-psq to 0.0.7 or later.
What level of access does exploitation require?
The supplied CVSS vector indicates that exploitation is network-accessible, has low attack complexity, and requires neither privileges nor user interaction.
What is the indicated security impact?
The supplied CVSS vector indicates high availability impact, with no indicated confidentiality or integrity impact.