CVE-2026-111497 — Out-of-Bounds Write in Google Brotli Decoder

Description (CNA)

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, disclose sensitive memory contents, cause a denial of service, or potentially execute arbitrary code using a crafted Brotli-compressed stream. Users need to update any Brotli libraries or binaries between 1.0.3 through 1.2.0 to the latest available version: 1.0.10 or 1.1.1 or 1.2.1.

Affected (CNA)

Vendor / product	Versions
Google / Brotli	affected 1.0.3 before 1.0.10; affected 1.1.0 before 1.1.1; affected 1.2.0 before 1.2.1

CWE

CWE-787, CWE-252

References

https://nodejs.org/en/blog/vulnerability/october-2026-security-releases#nodejs-brotli-decoder-out-of-bounds-write-permits-remote-code-execution-cve-2026-111497---high

ADP enrichment

CISA-ADP

No English description supplied.

No references supplied.

CVE

No English description supplied.

https://github.com/advisories/GHSA-9v8h-qqgm-4m35
http://www.openwall.com/lists/oss-security/2026/10/23/25
https://lists.debian.org/debian-lts-announce/2026/10/msg00049.html