{"cve":"CVE-2026-102414","nvd":{"published":"2026-09-29T04:17:55.180","modified":"2026-09-30T17:32:07.107","status":"Deferred","description":"pbkdf2 through 3.1.6 re-hashes passwords longer than the digest's block size on every iteration in its JavaScript fallback (lib/sync.js). A password longer than the block size (64 bytes, or 128 bytes for sha384 and sha512) is passed to HMAC as the key on every iteration, and HMAC hashes such keys in full each time. Cost is therefore O(iterations × password length), and a long password can block the event loop. The fallback is used by pbkdf2Sync and pbkdf2 on Node.js before 0.12, on Bun (1.0.0 through 1.1.34, and 1.2.6 and later), and on Deno 2.9.0 and later, because their native pbkdf2Sync fails the library's feature check. It is also used when lib/sync.js is imported directly. Node.js 0.12 and later, and browser builds (which use lib/sync-browser.js), are not affected. Applications that enforce a reasonable maximum password length are not meaningfully affected.","cvss_v4":{"vector":"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N","score":6.3},"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L","score":3.7},"cwes":["CWE-400"],"references":["https://github.com/browserify/pbkdf2/commit/493d8d8","https://github.com/browserify/pbkdf2/issues/82","https://github.com/browserify/pbkdf2/security/advisories/GHSA-477h-4r7f-fvrx","https://github.com/browserify/pbkdf2/security/advisories/GHSA-477h-4r7f-fvrx"],"products":[],"source":"nvd","synced_at":"2026-10-19T22:56:48.555445741+00:00"},"epss":{"cve":"CVE-2026-102414","score":0.00345,"percentile":0.27753,"date":"2026-10-25"},"kev":null,"osv":[{"id":"GHSA-477h-4r7f-fvrx","url":"https://osv.dev/vulnerability/GHSA-477h-4r7f-fvrx","summary":"pbkdf2 rehashes long passwords on every iteration, enabling denial of service","modified":"2026-10-06T13:45:05.863430802Z","packages":[{"ecosystem":"npm","name":"pbkdf2","purl":"pkg:npm/pbkdf2","ranges":["<3.1.7"],"fixed":["3.1.7"]}]}],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}