CVE-2026-110926

medium

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.

References

https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-101837

https://bugzilla.redhat.com/show_bug.cgi?id=2553035

https://access.redhat.com/security/cve/CVE-2026-110926

https://access.redhat.com/errata/RHSA-2026:82247

Details

Source: Mitre, NVD

Published: 2026-10-15

Updated: 2026-10-15

Risk Information

CVSS v2

Base Score: 4.9

Vector: CVSS2#AV:N/AC:H/Au:S/C:C/I:N/A:N

Severity: Medium

CVSS v3

Base Score: 5.3

Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N