Reference page — cumulative record through Sunday, October 4, 2026 UTC. Reference pages update as the archive grows; only dated daily editions are immutable pages of record.
CVE-2026-0967
Red Hat Red Hat Enterprise Linux 10 — Libssh: libssh: denial of service via inefficient regular expression processing
AV AC PR UI S C I A CVSS EPSS %ile KEV
L L N R U N N H 5.5 .0022 11.7 —
AFFECTED
Product Versions Fixed
Red Hat Enterprise Linux 10 unspecified 0:0.12.0-2.el10
Red Hat Enterprise Linux 9 unspecified 0:0.10.4-18.el9
Red Hat Enterprise Linux 9 unspecified 0:0.10.4-18.el9
Red Hat Enterprise Linux 6 unspecified —
Red Hat Enterprise Linux 7 unspecified —
Red Hat Enterprise Linux 8 unspecified —
Red Hat Hardened Images unspecified —
Red Hat OpenShift Container Platform 4 unspecified —
Red Hat OpenShift Container Platform 4 unspecified —
TIMELINE
Jan 14 Reserved by redhat
Mar 26 Published (CNA: redhat)
Aug 21 RESCORED — CVE-2026-0967 (Red Hat Enterprise Linux 10). CVSS 2.2 → 5.5 (NVD).
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.
Lifecycle
Complete event history — 3 events, chronological
| Date | Event | Detail |
|---|
| January 14, 2026 | Reserved | Reserved by redhat |
| March 26, 2026 | Published | Published (CNA: redhat) |
| August 21, 2026 | RESCORED | RESCORED — CVE-2026-0967 (Red Hat Enterprise Linux 10). CVSS 2.2 → 5.5 (NVD). |
Affected
Affected products and packages — 9 rows
| Vendor | Product / Package | Ecosystem | Version introduced | Fixed |
|---|
| Red Hat | Red Hat Enterprise Linux 10 | — | — | 0:0.12.0-2.el10 |
| Red Hat | Red Hat Enterprise Linux 9 | — | — | 0:0.10.4-18.el9 |
| Red Hat | Red Hat Enterprise Linux 9 | — | — | 0:0.10.4-18.el9 |
| Red Hat | Red Hat Enterprise Linux 6 | — | — | — |
| Red Hat | Red Hat Enterprise Linux 7 | — | — | — |
| Red Hat | Red Hat Enterprise Linux 8 | — | — | — |
| Red Hat | Red Hat Hardened Images | — | — | — |
| Red Hat | Red Hat OpenShift Container Platform 4 | — | — | — |
| Red Hat | Red Hat OpenShift Container Platform 4 | — | — | — |
About this page
This is a reference page, not a dated page of record. It assembles the complete lifecycle of CVE-2026-0967 from the CVE Program record, NVD enrichment, the CISA KEV catalog, EPSS, and OSV advisories. The box score's numbers (CVSS, EPSS, KEV status) are current as of Sunday, October 4, 2026 UTC and are re-derived as the archive grows; only dated daily editions are immutable pages of record. The authoritative source for this identifier is cve.org.
