CVE-2026-59846Low· 3.9▾ SunlitA flaw was found in libssh. A malicious username expanded through %r in ProxyCommand handling can inject shell metacharacters, exposing environment variables and causing unintended shell behavior.
▾ Sunlit zone — Low / medium · no exploitation signal
impact 21.5 · likelihood 0 · exploitation 0
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Stakeholder-Specific Vulnerability Categorization from CISA's ADP record at CVE.org: whether exploitation is observed, whether an attack can be automated, and how much of the system is at stake. The CVSS score shown above comes from the assigning CNA record, not NVD.
Exploit-prediction probability, daily snapshots since Nov 6.
Disclosure to exploitation, from the record and what we observed since indexing it.
Disclosed via CVEORG
Last analysed / modified upstream
0.1%
A flaw was found in libssh. A malicious username expanded through %r in ProxyCommand handling can inject shell metacharacters, exposing environment variables and causing unintended shell behavior.
libssh (all versions)libssh (all versions)libssh (all versions)libssh (all versions)libssh (all versions)libssh-main (all versions)Refer to the linked advisories for vendor-supplied fixes and affected version ranges.
Make sure you are not executing connections with untrusted username inputs.
Connected by shared product, vendor, weakness, or advisory.
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