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CVE-2026-11645 is a high-severity out-of-bounds read and write vulnerability in the V8 JavaScript and WebAssembly engine used by Google Chrome and other Chromium-based browsers. In affected Chrome versions prior to 149.0.7827.103, a remote attacker can trigger memory corruption by supplying a crafted HTML page that causes V8 to perform invalid memory accesses during optimized execution. Available technical reporting indicates the flaw is rooted in TurboFan range analysis and optimization logic: incorrect computation of variable bounds in loops or certain bitwise-operation paths can cause the compiler to incorrectly eliminate runtime bounds checks, allowing array accesses beyond the backing store. Reporting also indicates a related failure mode involving stale assumptions about array ElementsKind transitions, which can likewise produce invalid reads or writes. The resulting memory corruption can be used to execute arbitrary code within the browser sandbox. Google confirmed exploitation in the wild at the time of disclosure.
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1 valid exploit after Mallory filtered fakes, detection scripts, and README-only repos (2 hidden).
This repository is a very small standalone browser PoC consisting of one HTML file and one README. The main artifact, CVE-2026-11645.html, is a self-contained client-side test page with buttons for version checking, repeated trigger execution, and an automated stress loop. Its JavaScript checks navigator.userAgent for the Chrome major version, labels versions below 149 as likely vulnerable, and then runs a trigger routine that repeatedly instantiates a class extending Function while changing a property value from an integer to a floating-point number. The code frames this as a V8 type confusion / out-of-bounds memory corruption trigger and is designed to induce a crash or instability in vulnerable Chrome 148 builds. There are no network callbacks, no external exploit servers, no shell payloads, and no persistence or command execution logic. The exploit capability is limited to local-in-browser triggering of the claimed vulnerability when a victim opens the malicious HTML page. The strongest observable outcome supported by the code is browser crash/stress testing; the README discusses possible RCE impact, but the repository does not include a full exploitation chain or arbitrary code execution payload. Overall, this is best classified as a browser/web proof-of-concept trigger for a claimed Chrome V8 memory corruption issue, not a weaponized exploit.
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187 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
An earlier Chrome V8 zero-day that was actively exploited in the wild and patched earlier in the month.
A zero-day out-of-bounds read/write vulnerability in the Chromium V8 JavaScript engine that can be triggered via a crafted malicious HTML page, potentially allowing arbitrary code execution within the browser sandbox.
An out-of-bounds read/write vulnerability in the Google Chromium V8 JavaScript engine that could lead to denial of service, privilege escalation, or remote code execution.
A critical out-of-bounds vulnerability in the Google Chromium V8 engine that allows remote code execution via malicious HTML pages.
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Cross-references every affected SKU, including bundled OEM variants.
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