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[gentoo-announce] [ GLSA 202608-17 ] libssh2: Multiple Vulnerabilities

Posted on 20 August 2026
Gentoo-announce

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Gentoo Linux Security Advisory GLSA 202608-17
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https://security.gentoo.org/
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Severity: High
Title: libssh2: Multiple Vulnerabilities
Date: August 20, 2026
Bugs: #977961
ID: 202608-17

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Synopsis
========
Multiple vulnerabilities have been found in libssh2, the worst of which
could result in remote code execution.

Background
==========
libssh2 is a library implementing the SSH2 protocol.

Affected packages
=================
Package Vulnerable Unaffected
---------------- ------------ ------------
net-libs/libssh2 < 1.11.1-r2 >= 1.11.1-r2

Description
===========
Multiple vulnerabilities have been discovered in libssh2. Please review
the CVE identifiers referenced below for details.

Impact
======
Please review the referenced CVE identifiers for details.

Workaround
==========
There is no known workaround at this time.

Resolution
==========
All libssh2 users should upgrade to the latest version:

# emerge --sync
# emerge --ask --oneshot --verbose ">=net-libs/libssh2-1.11.1-r2"

References
==========
[ 1 ] CVE-2025-15661
https://nvd.nist.gov/vuln/detail/CVE-2025-15661
[ 2 ] CVE-2026-7598
https://nvd.nist.gov/vuln/detail/CVE-2026-7598
[ 3 ] CVE-2026-55199
https://nvd.nist.gov/vuln/detail/CVE-2026-55199
[ 4 ] CVE-2026-55200
https://nvd.nist.gov/vuln/detail/CVE-2026-55200

Availability
============
This GLSA and any updates to it are available for viewing at
the Gentoo Security Website:

https://security.gentoo.org/glsa/202608-17

Concerns?
=========
Security is a primary focus of Gentoo Linux and ensuring the
confidentiality and security of our users' machines is of utmost
importance to us. Any security concerns should be addressed to
security@gentoo.org or alternatively, you may file a bug at
https://bugs.gentoo.org.

License
=======
Copyright 2026 Gentoo Foundation, Inc; referenced text
belongs to its owner(s).

The contents of this document are licensed under the
Creative Commons - Attribution / Share Alike license.

https://creativecommons.org/licenses/by-sa/2.5
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