CVE-2026-116773: Eugeny russh · Unthrottled Resource Allocation
Affects Eugeny russhSource CVE Database V5
Not known to be exploited · CVSS 4.3 Medium : upgrade to 0.65.0 when convenient.
Data as of 27 Oct 2026, 20:44 UTC
- Patch
- Available – fixed in 0.65.0
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:LExploitation evidence
Disclosed: evidence found.
CVE published 27 Oct 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponised: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors
A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 26 Oct 2026.
What to do
Upgrade russh and github/Eugeny/russh to 0.65.0.
Affected software
| Product | Affected | Fixed in |
|---|---|---|
| Eugenyrussh | Affected
| Fixed in
|
crates.iogithub/Eugeny/russhpkg:cargo/github/Eugeny/russhOther threats | Affected
| Fixed in
|
Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.
AI-suggested
Upgrade russh to version 0.65.0 or later, where this issue is fixed. No other mitigation is indicated or required.
Description
CVE-2026-116773 is a resource exhaustion vulnerability in the russh Rust SSH client and server library prior to version 0.65.0. The client improperly handles repeated private EXT_INFO messages (msg::EXT_INFO = 7) sent before authentication, appending extension names to a vector without limits or deduplication. This can lead to progressive memory exhaustion on the client side. The issue is fixed in russh version 0.65.0.