CRITICALVulnerability
Verified
Global

NVD CRITICAL: CVE-2026-111497 — A buffer overflow vulnerability in the Brotli decoder (c/dec/decode.c) in Google...

·Source: NIST NVD

Updated:

Executive 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 lib

Analysis

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. CVSS Score: 9.8. Published: 2026-10-22T14:17:37.190.

Indicators of Compromise (1)

CVE (1)
CVE-2026-111497
NVDMITRE CVE
Source Attribution

Originally published by NIST NVD on Oct 22, 2026. Verified by: NIST.

Related Threats

MEDIUMVulnerability

I recreated a Node2Shell (CVE-2026-111497) RCE attack in the form of an interactive exercise

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CVE-2026-111497
r/blueteamsec
LOWVulnerability

Can’t Patch Node.js Yet? Build a Stopgap with the Controls You Own

Executive Summary Node.js has fixed CVE-2026-111497, a Brotli decoder flaw that can permit remote code execution, in 22.23.4, 24.22.1, and 26.12.1, but upgrading at scale is slow. In Qualys telemetry, only 42,000 of roughly 3 million Node.js installations have been patched, and 1.7 million run end-of-life lines that will never receive a fix. In the […]

CVE-2026-111497
Qualys Blog
LOWVulnerability

Waiting on a Node.js Upgrade? Build a Stopgap with the Controls You Own

Executive Summary Node.js has fixed CVE-2026-111497, a Brotli decoder flaw that can permit remote code execution, in 22.23.4, 24.22.1, and 26.12.1, but upgrading at scale is slow. In Qualys telemetry, only 42,000 of roughly 3 million Node.js installations have been patched, and 1.7 million run end-of-life lines that will never receive a fix. In the […]

CVE-2026-111497
Qualys Blog