CVE-2026-0967
Libssh: libssh: denial of service via inefficient regular expression processing
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.
No summary for this CVE yet.
CVSS Vector Breakdown
Exploitability
AV:LAttack VectorLocal
AC:LAttack ComplexityLow
PR:NPrivileges RequiredNone
UI:RUser InteractionRequired
Scope
S:UScopeUnchanged
Impact
C:NConfidentialityNone
I:NIntegrityNone
A:HAvailabilityHigh
Weaknesses
Affected Products
Red Hat Inc.
commercial·USaka Red Hat, redhat
ООО «РусБИТех-Астра»
commercial·RUaka rusbitech-astra
АО «ИВК»
commercial·RUaka ivk
ООО «Ред Софт»
commercial·RUaka red soft
АО «СберТех»
commercial·RUaka ao sbertech, сбертех
and 7 more affected products View all →
Exploitability
Official Patch Available
Workaround Available
Attack Graph
Products CVE Techniques Tactics
Click technique nodes for MITRE ATT&CK details · drag to pan · Ctrl/⌘ + scroll to zoom, or go fullscreen.
MITRE ATT&CK
1 technique Impact
References
https://access.redhat.com/errata/RHSA-2026:18160
access.redhat.com
https://access.redhat.com/errata/RHSA-2026:18683
access.redhat.com
https://access.redhat.com/security/cve/CVE-2026-0967
access.redhat.com
and 8 more references View all →
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