Resource exhaustion in Eugeny Russh
CVE-2026-46702
Russh is a Rust SSH client & server library. From version 0.34.0 to before version 0.61.1, when SSH compression is enabled, russh accepted compressed packets whose on-wire size passed the normal transport packet-length checks but whose decompressed size was much larger. This allowed a remote peer to send oversized post-decompression packets that should have been rejected. In current releases, this is a remote denial-of-service / resource-exhaustion issue in the post-decompression receive path. In older releases before 0.58.0, the same remote decompression path used CryptoVec, which appears to make the historical impact worse. This issue has been patched in version 0.61.1.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.
EPSS exploit prediction
EPSS: 0.003 (19.0th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 19th percentile — 19.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.005 · newest: 0.003 · change: -0.002
Affected products
- Eugeny Russh — versions >= 0.34.0, < 0.61.1
Weakness classification (CWE)
References
Frequently asked questions
- What is CVE-2026-46702?
- CVE-2026-46702 is a high-severity vulnerability in Eugeny Russh, classified under Allocation of Resources Without Limits or Throttling. CVSS score: 7.5/10. Published 2026-06-10.
- How severe is CVE-2026-46702?
- High severity. CVSS v3 base score is 7.5 out of 10.