CVE-2026-0967

Name
CVE-2026-0967
Description
A flaw was found in libssh. A remote attacker, by controlling client configuration files or known_hosts files, could craft specific hostnames that when processed by the `match_pattern()` function can lead to inefficient regular expression backtracking. This can cause timeouts and resource exhaustion, resulting in a Denial of Service (DoS) for the client.
NVD Severity
unknown
Other trackers
CVE, NVD, CERT, CVE Details, CIRCL, Arch Linux, Debian, Red Hat, Ubuntu, Gentoo, SUSE (Bugzilla), SUSE (CVE), Mageia
Mailing lists
oss-security, full-disclosure, bugtraq
Exploits
Exploit DB, Metasploit
Forges
GitHub (code, issues), Aports (code, issues)

References

Type URI
secalert@redhat.com https://access.redhat.com/security/cve/CVE-2026-0967
secalert@redhat.com https://bugzilla.redhat.com/show_bug.cgi?id=2436981
secalert@redhat.com https://www.libssh.org/2026/02/10/libssh-0-12-0-and-0-11-4-security-releases/

Match rules

CPE URI Source package Min version Max version
cpe:2.3:a:libssh:libssh:*:*:*:*:*:*:*:* libssh >= None <= 0.11.3
cpe:2.3:o:redhat:enterprise_linux:9.0:*:*:*:*:*:*:* enterprise_linux == None == 9.0
cpe:2.3:o:redhat:enterprise_linux:10.0:*:*:*:*:*:*:* enterprise_linux == None == 10.0

Vulnerable and fixed packages

Source package Branch Version Maintainer Status
libssh edge-community 0.12.0-r0 Natanael Copa <ncopa@alpinelinux.org> fixed
libssh edge-community 0.11.3-r0 Natanael Copa <ncopa@alpinelinux.org> possibly vulnerable
libssh edge-community 0.11.2-r0 Natanael Copa <ncopa@alpinelinux.org> possibly vulnerable
libssh edge-community 0.11.1-r0 Natanael Copa <ncopa@alpinelinux.org> possibly vulnerable
libssh edge-community 0.10.6-r0 Natanael Copa <ncopa@alpinelinux.org> possibly vulnerable
libssh edge-community 0.9.6-r0 Natanael Copa <ncopa@alpinelinux.org> possibly vulnerable
libssh edge-community 0.9.5-r0 Natanael Copa <ncopa@alpinelinux.org> possibly vulnerable
libssh edge-community 0.9.4-r0 None possibly vulnerable
libssh edge-community 0.9.3-r0 None possibly vulnerable
libssh edge-community 0.7.6-r0 None possibly vulnerable
libssh 3.23-community 0.11.4-r0 Natanael Copa <ncopa@alpinelinux.org> fixed
libssh 3.23-community 0.11.3-r0 Natanael Copa <ncopa@alpinelinux.org> possibly vulnerable