CVE-2026-46673

HIGH

Russh < 0.60.3 CryptoVec - Unbounded Allocation Resource Exhaustion

Title source: manual
STIX 2.1

Description

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.

References (1)

Core 1
Core References

Scores

CVSS v3 7.5
EPSS 0.0046
EPSS Percentile 36.2%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

CISA SSVC

Vulnrichment
Exploitation poc
Automatable yes
Technical Impact partial

Details

CWE
CWE-770
Status published
Products (3)
crates.io/russh 0 - 0.60.3crates.io
crates.io/russh-cryptovec 0 - 0.60.3crates.io
Eugeny/russh < 0.60.3
Published Jun 10, 2026
Tracked Since Jun 11, 2026