CVE-2026-76234

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 HIGH

7.5^/10

CVSS v3 : HIGH

Vector :

Exploitability : 3.9 / Impact : 3.6

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://github.com/celabshq/libcrux/security/advisories/GHSA-435g-fcv3-8j26
https://www.vulncheck.com/advisories/libcrux-before-cryptographic-implementation-bug-fixes

Configurations

No configuration.

History

No history.

Information

Published : 2026-08-19 14:17

Updated : 2026-08-21 12:16

NVD link : CVE-2026-76234

Mitre link : CVE-2026-76234

CVE.ORG link : CVE-2026-76234

JSON object : View

Products Affected

No product.

CWE

CWE-347

Improper Verification of Cryptographic Signature

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