{"id":"BIT-node-min-2026-21717","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**.","aliases":["BIT-node-2026-21717","CVE-2026-21717"],"modified":"2026-04-06T08:41:21.410562756Z","published":"2026-04-06T07:59:01.329Z","database_specific":{"cpes":["cpe:2.3:a:nodejs:node.js:*:*:*:*:*:*:*:*"],"severity":"Medium"},"references":[{"type":"WEB","url":"https://nodejs.org/en/blog/vulnerability/march-2026-security-releases"},{"type":"WEB","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-21717"}],"affected":[{"package":{"name":"node-min","ecosystem":"Bitnami","purl":"pkg:bitnami/node-min"},"ranges":[{"type":"SEMVER","events":[{"introduced":"0"},{"fixed":"20.20.2"},{"introduced":"21.0.0"},{"fixed":"24.14.1"},{"introduced":"25.0.0"},{"fixed":"25.8.2"}]}],"database_specific":{"source":"https://github.com/bitnami/vulndb/tree/main/data/node-min/BIT-node-min-2026-21717.json"},"severity":[{"type":"CVSS_V3","score":"CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H"}]}],"schema_version":"1.7.5"}