Incorrect Authorization Affecting libssh package, versions [0,]
Threat Intelligence
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The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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- published25 Jul 2026
- disclosed21 Jul 2026
- creditUnknown
Introduced: 21 Jul 2026
NewCVE-2026-59851 (opens in a new tab)How to fix?
A fix was pushed into the master branch but not yet published.
Overview
Affected versions of this package are vulnerable to Incorrect Authorization in the gssapi-keyex process due to missing verification of the Kerberos principal's authorization for the requested local user. An attacker can gain unauthorized access as arbitrary users by exploiting this flaw when GSSAPIKeyExchange is enabled.
Workaround
This vulnerability can be mitigated by disabling GSSAPIKeyExchange.