What is CVE-2026-110926?

CVE-2026-110926 is a medium-severity vulnerability in Red Hat Enterprise Linux 10, classified under Observable Discrepancy. CVSS score: 5.3/10. Published 2026-10-15.

How severe is CVE-2026-110926?

Medium severity. CVSS v3 base score is 5.3 out of 10.

Vulnerability in Red Hat Enterprise Linux 10

CVE-2026-110926

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.

Published 2026-10-15 · last modified 2026-10-15.

CVSS v3 metric

CVSS v3 base score 5.3 (Medium). Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N.

EPSS exploit prediction

No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.

Affected products

Weakness classification (CWE)

CWE-203 — Observable Discrepancy

References

access.redhat.com/security/cve/CVE-2026-110926 (vdb-entry)
bugzilla.redhat.com/show_bug.cgi (issue-tracking)
access.redhat.com/errata/RHSA-2026:82247 (vendor-advisory)

Frequently asked questions

What is CVE-2026-110926?: CVE-2026-110926 is a medium-severity vulnerability in Red Hat Enterprise Linux 10, classified under Observable Discrepancy. CVSS score: 5.3/10. Published 2026-10-15.
How severe is CVE-2026-110926?: Medium severity. CVSS v3 base score is 5.3 out of 10.