| Name | CVE-2026-102414 |
| 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. |
| Source | CVE (at NVD; CERT, ENISA, LWN, oss-sec, fulldisc, Debian ELTS, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more) |
| Debian Bugs | 1149792 |
The table below lists information on source packages.
| Source Package | Release | Version | Status |
|---|---|---|---|
| node-pbkdf2 (PTS) | bookworm, trixie | 3.1.2-3 | vulnerable |
| forky, sid | 3.1.7+~3.1.2-1 | fixed |
The information below is based on the following data on fixed versions.
| Package | Type | Release | Fixed Version | Urgency | Origin | Debian Bugs |
|---|---|---|---|---|---|---|
| node-pbkdf2 | source | (unstable) | 3.1.7+~3.1.2-1 | 1149792 |
[trixie] - node-pbkdf2 <no-dsa> (Minor issue)
[bookworm] - node-pbkdf2 <postponed> (Minor issue)
https://github.com/browserify/pbkdf2/security/advisories/GHSA-477h-4r7f-fvrx
https://github.com/browserify/pbkdf2/issues/82
Fixed by: https://github.com/browserify/pbkdf2/commit/493d8d8ff437f680338bf7397398fda884ad462e (v3.1.7)