A vulnerability in Brotli, Google’s widely used open-source compression library, is putting a broad range of software at risk. About CVE-2026-111497 Alternatively known as “Node2Shell”, “Broccoli2Shell” and “Brotli2Shell”, CVE-2026-111497 is a remotely exploitable out-of-bounds write flaw that gained widespread attention after Node.js publicly disclosed it on October 21, 2026.
Brotli bug reaches far beyond Node.js (CVE-2026-111497)
About this summary. This is a short excerpt from the description that Help Net Security published with its article. Cyber Security News did not report or verify the underlying story. Read the original: https://www.helpnetsecurity.com/2026/10/27/node2shell-broccoli2shell-vulnerability-cve-2026-111497/
Source attribution: headline and facts are from Help Net Security (helpnetsecurity.com). Summary method: excerpt of the source description. See our source attribution policy.
Related coverage
AL26-027 - Critical vulnerability impacting Google Brotli – CVE-2026-111497
Number: AL26-027 Date: October 28, 2026 Audience This Alert is intended for IT professionals and managers. Purpose An Alert is used to raise awareness of a recently…
Brotli2Shell: Frequently asked questions for Google Brotli decoder vulnerability (CVE-2026-111497)
Researchers have demonstrated remote code execution through CVE-2026-111497, an out-of-bounds write in Google's Brotli decoder library, and public proofs-of-concept…
Experts temper emergency-level alarms over critical Brotli defect
Alarm bells ratcheted up yet again about an AI-discovered vulnerability that could — if exploited in the wild — destabilize vast stretches of the internet. The critical…
Brotli2Shell: Beyond Node(2Shell) and HTTP(2Shell)
CVE-2026-111497 demonstrates how a single memory-corruption bug in a widely reused native decoder can affect applications far beyond the runtime where it was first…
U.S. CISA adds Google Brotli and Adobe Commerce and Magento flaws to its Known Exploited Vulnerabilities catalog
U.S. Cybersecurity and Infrastructure Security Agency (CISA) adds Google Brotli and Adobe Commerce and Magento flaws to its Known Exploited Vulnerabilities catalog. The…
CVE-2026-111497: Critical out-of-bounds write in the Node.js Brotli decoder
OverviewOn October 21, 2026, the Node.js Project published a security advisory for CVE-2026-111497, an out-of-bounds write in the Brotli decoder bundled with Node.js…