CSIRTS // UNIFIED SECURITY ADVISORY FEEDSYS ● ONLINE · POWERED BY INTELFUSIONS.COM

← All products

V8 — security advisories

vendor: Google1 advisories1 sourcelatest 2026-08-06⚡ RSS feed

Every advisory CSIRTS.com has correlated to V8, newest first — across national CERTs, vendor PSIRTs and vulnerability databases.

⚡ Watch V8

Get an email when a new V8 advisory drops — max one per day, one-click unsubscribe.

CVE-2026-21717: A flaw in V8's string hashing mechanism causes integer-like strings to be hashed to their numeric value, making hash collisions trivially predictable. By crafting a request that causes many such collisions in V8's internal string table, an attacker can significantly degrade performance of the Node.js process. The most common trigger is any endpoint that calls `JSON.parse()` on attacker-controlled input, as JSON parsing automatically internalizes short strings into the affected h

mediumCVSS 5.9CVE-2026-21717msrc2026-08-06