Red Hat Security Advisory

RHSA-2026:90891

brotli security update

Released 2026-10-27 · Red Hat rating Important · View on Red Hat →

Fixed in

Red Hat Enterprise Linux AppStream E4S (v.8.8) brotli-devel-1.0.6-4.el8_8.1, python3-brotli-1.0.6-4.el8_8.1
Red Hat Enterprise Linux AppStream TUS (v.8.8) brotli-devel-1.0.6-4.el8_8.1, python3-brotli-1.0.6-4.el8_8.1
Red Hat Enterprise Linux BaseOS E4S (v.8.8) brotli-1.0.6-4.el8_8.1
Red Hat Enterprise Linux BaseOS TUS (v.8.8) brotli-1.0.6-4.el8_8.1

Fixes 1 record

TI-2026-79288 CVE-2026-111497 · GHSA-9v8h-qqgm-4m35

Out-of-bounds write in Google Brotli decoder

CRITICAL 99KEV

A buffer overflow vulnerability in the Brotli decoder (c/dec/decode.c) in Google Brotli versions 1.0.3 through 1.2.0 on all platforms allows a remote unauthenticated attacker to corrupt adjacent decoder state memory, dis…

CVSS 4.0CRITICAL 9.2 Network No auth No interaction EPSS 0.82641 Published 2026-10-22 Partial fix · 1.0.10, 1.1.1 +2 CWE-252