
Brotli decoder flaw CVE-2026-111497 exploited across many runtimes
CISA lists the out-of-bounds write; a public proof of concept crashes standard builds, and patched Node.js still reports Brotli 1.2.0.
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CISA lists the out-of-bounds write; a public proof of concept crashes standard builds, and patched Node.js still reports Brotli 1.2.0.

Out-of-bounds writes in the decoder can yield code execution; fixed builds are 1.0.10, 1.1.1, and 1.2.1.

Sweet says exploitation attempts hit 88% of monitored environments and is giving any organization sensors for 30 days.

Google scored it 9.2; major runtimes have fixes, but some projects had not shipped a fixed release as of October 26.

Trail of Bits released an audit tool; Node.js credited OpenAI researchers, and real-world exploitation is not stated.

Patches cover Node.js 22.23.4, 24.22.1 and 26.12.1; Wiz says 91% of cloud environments have vulnerable resources.

Google rates the memory-corruption bug 9.2; code execution was shown only on one Node.js build, with no attacks reported.
The truncated reply links two GitHub advisories and only suggests OpenSSL processing may be involved.
Rapid7 disclosed two chained N-able N-central flaws, CVE-2026-86206 and CVE-2026-86207, enabling unauthenticated admin account creation; patched in 2026.3 Hotfix 3.
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