Reference page — cumulative record through Monday, October 19, 2026 UTC. Reference pages update as the archive grows; only dated daily editions are immutable pages of record.
CVE-2026-110926
Red Hat Red Hat Hardened Images — Openssh: openssh: shared lz77 compression dictionary leaks plaintext across channels
AV AC PR UI S C I A CVSS EPSS %ile KEV
N H L N U H N N 5.3 .0030 21.5 —
AFFECTED
Product Versions Fixed
Red Hat Hardened Images unspecified 10.5p1-1.2.hum1
Red Hat Enterprise Linux 10 unspecified —
Red Hat Enterprise Linux 6 unspecified —
Red Hat Enterprise Linux 7 unspecified —
Red Hat Enterprise Linux 8 unspecified —
Red Hat Enterprise Linux 9 unspecified —
Red Hat Hardened Images unspecified —
Red Hat OpenShift Container Platform 4 unspecified —
Red Hat OpenShift Container Platform 4 unspecified —
TIMELINE
Oct 15 PATCH SHIPPED — CVE-2026-110926 (Red Hat Hardened Images). Fixed in Red Hat Hardened Images 10.5p1-1.2.hum1.
Oct 15 Reserved by redhat
Oct 15 Published (CNA: redhat)
Description
A flaw was found in OpenSSH. When compression is negotiated, channels on the same connection share one LZ77 dictionary. A peer who can write on one channel can recover plaintext from another channel by chosen-plaintext lengths.
Lifecycle
Complete event history — 3 events, chronological
| Date | Event | Detail |
|---|
| October 15, 2026 | PATCH SHIPPED | PATCH SHIPPED — CVE-2026-110926 (Red Hat Hardened Images). Fixed in Red Hat Hardened Images 10.5p1-1.2.hum1. |
| October 15, 2026 | Reserved | Reserved by redhat |
| October 15, 2026 | Published | Published (CNA: redhat) |
Affected
Affected products and packages — 9 rows
| Vendor | Product / Package | Ecosystem | Version introduced | Fixed |
|---|
| Red Hat | Red Hat Hardened Images | — | — | 10.5p1-1.2.hum1 |
| Red Hat | Red Hat Enterprise Linux 10 | — | — | — |
| 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 Enterprise Linux 9 | — | — | — |
| 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-2026-110926 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 Monday, October 19, 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.
