Is CVE-2026-76234 being exploited?

No public exploit is currently tracked.

How severe is CVE-2026-76234?

CVE-2026-76234 has a CVSS v3 severity of HIGH (7.5).

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CVE-2026-76234

Description

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.