Bug 2445579 (CVE-2026-3731) - CVE-2026-3731 libssh: libssh: Denial of Service via out-of-bounds read in SFTP extension name handler
Summary: CVE-2026-3731 libssh: libssh: Denial of Service via out-of-bounds read in SFT...
Keywords:
Status: NEW
Alias: CVE-2026-3731
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Product Security DevOps Team
QA Contact:
URL:
Whiteboard:
Depends On: 2445661 2445658 2445659 2445660
Blocks:
TreeView+ depends on / blocked
 
Reported: 2026-03-08 11:01 UTC by OSIDB Bzimport
Modified: 2026-07-02 16:50 UTC (History)
6 users (show)

Fixed In Version:
Clone Of:
Environment:
Last Closed:
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Description OSIDB Bzimport 2026-03-08 11:01:25 UTC 
A weakness has been identified in libssh up to 0.11.3. The impacted element is the function sftp_extensions_get_name/sftp_extensions_get_data of the file src/sftp.c of the component SFTP Extension Name Handler. Executing a manipulation of the argument idx can lead to out-of-bounds read. The attack may be performed from remote. Upgrading to version 0.11.4 and 0.12.0 is sufficient to resolve this issue. This patch is called 855a0853ad3abd4a6cd85ce06fce6d8d4c7a0b60. You should upgrade the affected component.
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