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VulnerabilityPublished Updated

CVE-2026-0967: Red Hat Enterprise Linux 10 · ReDoS

Affects Red Hat Enterprise Linux 10Source CVE Database V5

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Not known to be exploited · CVSS 2.2 Low.

Data as of 30 Oct 2026, 11:52 UTC

CVSS 3.0 base score
2.2Low
How severe the flaw is on the 0–10 CVSS scale.
EPSS
0.2% chance of exploitation in 30 days – higher than 14% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
CVSS:3.0/AV:L/AC:H/PR:L/UI:R/S:U/C:N/I:N/A:L

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 26 Mar 2026

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponized: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 30 Oct 2026.

What to do

Affected software

ProductAffectedFixed in
Red Hat Enterprise Linux 10libsshAffected–Fixed in–
Red Hat Enterprise Linux 9libsshAffected–Fixed in–
Red Hat Enterprise Linux 9libsshAffected–Fixed in–
Red Hat Enterprise Linux 6libssh2Affected–Fixed in–
Red Hat Enterprise Linux 7libssh2Affected–Fixed in–
Red Hat Enterprise Linux 8libsshAffected–Fixed in–

AI-suggested

An official security update from Red Hat is available that addresses this vulnerability by updating libssh to version 0.12.0. Users of Red Hat Enterprise Linux 10 should apply the update as described in the Red Hat advisory RHSA-2026:18160 and the referenced article https://access.redhat.com/articles/11258. Applying this update will remediate the denial of service issue caused by inefficient regular expression processing. No additional mitigation steps are required beyond applying the official patch.

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.

References

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