CVE-2026-102824 (GCVE-0-2026-102824)
Vulnerability from cvelistv5
Published
2026-09-29 18:27
Modified
2026-09-30 20:24
CWE
  • CWE-327 - Use of a Broken or Risky Cryptographic Algorithm
Summary
Russh is a Rust SSH client and server library. Prior to 0.63.0, the hybrid ML-KEM 768 and X25519 implementation in russh/src/kex/hybrid_mlkem.rs accepts an all-zero 32-byte peer X25519 public key in both server_dh and compute_shared_secret, forcing the X25519 contribution to the combined shared secret to zero. A malicious SSH peer can therefore make the combined secret depend only on ML-KEM, defeating the hybrid exchange's intended fallback protection if ML-KEM is later weakened. This issue is fixed in version 0.63.0.
Impacted products
Vendor Product Version
Eugeny russh Version: < 0.63.0
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Show details on NVD website


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