{"id":"AZL-81245","summary":"CVE-2026-21717 affecting package nodejs24 for versions less than 24.14.1-1","details":"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.\r\n\r\nThe most common trigger is any endpoint that calls `JSON.parse()` on attacker-controlled input, as JSON parsing automatically internalizes short strings into the affected hash table.\r\n\r\nThis vulnerability affects **20.x, 22.x, 24.x, and 25.x**.","modified":"2026-08-28T17:47:55.050913772Z","published":"2026-03-30T20:16:20Z","upstream":["CVE-2026-21717"],"references":[{"type":"WEB","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-21717"}],"affected":[{"package":{"name":"nodejs24","ecosystem":"Azure Linux:3","purl":"pkg:rpm/azure-linux/nodejs24"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"24.14.1-1"}]}],"database_specific":{"source":"https://github.com/microsoft/AzureLinuxVulnerabilityData/blob/main/osv/AZL-81245.json"}}],"schema_version":"1.9.0"}