CVE-2026-102414
pbkdf2 rehashes long passwords on every iteration, enabling denial of service
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.
INFO
Published Date :
Sept. 29, 2026, 4:17 a.m.
Last Modified :
Sept. 29, 2026, 4:17 a.m.
Remotely Exploit :
Yes !
Source :
7ffcee3d-2c14-4c3e-b844-86c6a321a158
Affected Products
The following products are affected by CVE-2026-102414
vulnerability.
Even if cvefeed.io is aware of the exact versions of the
products
that
are
affected, the information is not represented in the table below.
No affected product recoded yet
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS 3.1 | LOW | 7ffcee3d-2c14-4c3e-b844-86c6a321a158 | ||||
| CVSS 4.0 | MEDIUM | 7ffcee3d-2c14-4c3e-b844-86c6a321a158 | ||||
| CVSS 4.0 | MEDIUM | 7ffcee3d-2c14-4c3e-b844-86c6a321a158 |
Solution
- Update the library to a patched version.
- Limit password length to a reasonable maximum.
- Avoid using the affected fallback code directly.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2026-102414.
| URL | Resource |
|---|---|
| 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 |
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-102414 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2026-102414
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2026-102414 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-102414 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
New CVE Received by 7ffcee3d-2c14-4c3e-b844-86c6a321a158
Sep. 29, 2026
Action Type Old Value New Value Added 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. Added CVSS V4.0 AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X Added CVSS V3.1 AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L Added CWE CWE-400 Added Affected New affected value received. <a href="https://github.com/CVEProject/cvelistV5/blob/main/cves/2026/102xxx/CVE-2026-102414.json">CVE-2026-102414</a> Added Reference https://github.com/browserify/pbkdf2/commit/493d8d8 Added Reference https://github.com/browserify/pbkdf2/issues/82 Added Reference https://github.com/browserify/pbkdf2/security/advisories/GHSA-477h-4r7f-fvrx