CVE-2026-46673
Unbounded 32-bit allocation
7.5
HIGH
CVSS 3.1
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.
How to fix CVE-2026-46673
To remediate CVE-2026-46673, upgrade the affected package to a fixed version below.
- —upgrade to 0.60.3 or later
- —upgrade to 0.60.3 or later
- —upgrade to 0.60.3 or later
- —upgrade to 0.60.3 or later
- —no fix listed
Is CVE-2026-46673 being exploited?
No exploitation signal available. Neither CISA KEV nor a current EPSS score has been published for CVE-2026-46673.
Affected packages (5)
- from 0, < 0.60.3
- >= 0.0.0-0, < 0.60.3
- from 0, < 0.60.3
- >= 0.0.0-0, < 0.60.3
- from 0
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | HIGH7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |