CVE-2026-111497: Out-of-Bounds Write in Google Brotli Decoder
Critical · CVSS 9.2 (CVSS 4.0)EPSS n/aPublished Updated Assigner: Google
Description
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.
CWE-252, CWE-787
Status incidents that name it
- · No impact listed · names this CVE
“…will be posted as progress is made. Akamai is aware of the recently published remote code execution vulnerability: CVE-2026-111497.Our subject matter experts are actively investigating and taking the appropriate mitigation actions, while we…”
Affected vendors and products
Google: Brotli
References
- CVE record on cve.org (opens in new tab)
- NVD entry (opens in new tab)
- nodejs.org/en/blog/vulnerability/october-2026-security-releases (opens in new tab)
- CVE records from the CVE Program (cve.org). CVE® is a registered trademark of The MITRE Corporation. (opens in new tab)
- This product uses data from the NVD API but is not endorsed or certified by the NVD. (opens in new tab)
- Known Exploited Vulnerabilities catalog from CISA. (opens in new tab)
- EPSS scores from FIRST (Exploit Prediction Scoring System). (opens in new tab)