CVE-2026-110926 MEDIUM

CVE-2026-110926: Openssh: openssh: shared lz77 compression dictionary leaks plaintext across channels

Vendor Red Hat
Product Red Hat Enterprise Linux 10
Weakness CWE-203
Published October 15, 2026
Last update October 15, 2026
View on NVD All CVEs

CVSS base score

5.3/10
Attack vector Network
Attack complexity High
Privileges required Low
User interaction None
Confidentiality High
Integrity None

CVSS vector

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

What the vulnerability does

01Description

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.

Key dates

02Disclosure timeline

October 15, 2026 CVE published
October 15, 2026 Record updated