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PatchSiren cyber security CVE debrief

CVE-2026-46673 Eugeny CVE debrief

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.

Vendor
Eugeny
Product
russh
CVSS
HIGH 7.5
CISA KEV
Not listed in stored evidence
Original CVE published
2026-06-10
Original CVE updated
2026-06-11
Advisory published
2026-06-10
Advisory updated
2026-06-11

Who should care

Users of Russh library versions prior to 0.60.3

Technical summary

The vulnerability is caused by unchecked capacity growth, unchecked length arithmetic, and unsafe allocation/locking paths in CryptoVec. This issue affects current and older russh releases.

Defensive priority

HIGH

Recommended defensive actions

  • Update to version 0.60.3 or later

Evidence notes

CVE-2026-46673 has been patched in version 0.60.3.

Sources and references

Verified primary and authoritative sources

  • CVE-2026-46673 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2026-46673

    CVE Program - Official CVE Program record with source-provided CVE metadata.

  • CVE-2026-46673 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2026-46673

    NIST National Vulnerability Database - Official NIST NVD detail page and source-specific vulnerability assessment.

Supplemental references

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.