CVE-2026-111497

Out-of-Bounds Write in Google Brotli Decoder

CVSS 4.0 9.2 CRITICALCheck source for fixed versionsKEV status unknown

Original advisory

Historical advisory recorded 26 Oct 2026 05:25:11 UTC. Read the latest advisory.

cve-program · CVE-2026-111497

Published

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.

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Affected versions, risk and source history

Advisory history

7 saved versions

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26 Oct 2026 05:25:11 UTC