# CVE-2026-111497: A booby-trapped file can take over apps that use Google Brotli

Status: Being used now (CISA KEV, added 2026-10-27) · Cloudflare Zero Wire: 
Who: Any app or website that unpacks Brotli compressed data, which is common in web software.
Do this: Update software and containers that include Brotli. Apply each vendor's security update.

## Agent prompt (read-only)
Read-only check, change nothing, send nothing anywhere.
Is Google Brotli (CVE-2026-111497) installed or running on this machine or in this project?
1. Find every copy and its version (apps, packages, containers, lockfiles).
2. Compare each version against the vendor's fixed version for CVE-2026-111497. Quote the vendor page you used.
3. Report a table: where, version, fixed version, status (exposed / fixed / not installed / unsure).
4. List the exact update steps, but do not run them.

## Official description
Google Brotli contains an unchecked return value vulnerability that 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.

## Sources
- https://nvd.nist.gov/vuln/detail/CVE-2026-111497
- https://radar.cloudflare.com/security/zero-wire/node2shell
- https://nvd.nist.gov/vuln/detail/CVE-2026-111497

Generated by isitexploited.org from public sources. Verify version numbers against the vendor before acting.