CVE-2026-46673: high-severity vulnerability in Eugeny russh
Russh: Unchecked CryptoVec allocation and growth handling is reachable from local agent inputs in current russh releases and from remote SSH traffic in historical pre-0.58.0 releases
Published · Updated
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21Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 7.5epss 0.3%
Russh is a Rust SSH client & server library. Prior to version 0.60.3, CryptoVec used unchecked capacity growth, unchecked length arithmetic, and unsafe allocation/locking paths. In current russh releases, local SSH agent peers could still feed attacker-controlled frame lengths into buffer growth before validation. In older russh releases before 0.58.0, remote SSH traffic also reached CryptoVec through transport and compression buffers. This issue has been patched in version 0.60.3.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Affected products
Eugeny · russhRelated CVEs — Eugeny russh
In the same product, most dangerous first.
CVE-2024-43410HIGHRussh has an OOM Denial of Service due to allocation of untrusted amountEPSS 0.9%CVE-2026-73430MEDIUMRussh: Pre-auth remote panic via all-zero Curve25519 peer public value (encode_mpint OOB)EPSS 0.6%CVE-2026-73429MEDIUMRussh: client wrong-length X25519 `clone_from_slice` panic (pre-auth DoS)EPSS 0.5%CVE-2026-42189HIGHRussh: Pre-auth DoS via unbounded allocation in keyboard-interactive authEPSS 0.5%CVE-2026-73489MEDIUMRussh: Post-auth remote panic via pty-req with more than 130 terminal-mode recordsEPSS 0.5%CVE-2025-54804MEDIUMRussh is missing an overflow check during channel windows adjustEPSS 0.4%