A AegiFlow
CRITICALCVSS 9.2EPSS 82.6%KNOWN EXPLOITED

CVE-2026-111497

CVE-2026-111497 updated by NVD

Published
2026-10-22
Modified
2026-11-05
EPSS percentile
100%
Sources
cisa-kev, github-advisory, nvd

Summary

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 packages

EcosystemPackageAffected versionsFixed versions
PyPIbrotli—1.2.1
PyPIbrotlicffi—1.2.1.0
Node.jsnode.js[object Object], [object Object], [object Object]—

Remediation: Upgrade to 1.2.1 or later.

References

Includes data from the CISA Known Exploited Vulnerabilities catalog.

Includes data from the GitHub Advisory Database, licensed under CC-BY 4.0.

Includes data from the National Vulnerability Database (NIST). NVD data is in the public domain; this page is not endorsed by NIST.

CVE® is a registered trademark of The MITRE Corporation. CVE content reproduced under the CVE Terms of Use; copyright designation © MITRE.

EPSS scores provided by the FIRST.org Exploit Prediction Scoring System.