CVE-2026-35041

Katalog CVE

CVSS 6.5 · Medium EPSS 0,43%

Kerentanan Inefficient Regular Expression Complexity pada nearform fast-jwt. Skor CVSS 3.1 6.5 (Medium) menurut NVD.

Deskripsi (NVD)

fast-jwt provides fast JSON Web Token (JWT) implementation. From 5.0.0 to 6.2.0, a denial-of-service condition exists in fast-jwt when the allowedAud verification option is configured using a regular expression. Because the aud claim is attacker-controlled and the library evaluates it against the supplied RegExp, a crafted JWT can trigger catastrophic backtracking in the JavaScript regex engine, resulting in significant CPU consumption during verification. This vulnerability is fixed in 6.2.1.

Rincian

Terbit di NVD

9 April 2026

Terakhir diubah

17 Juni 2026

Status NVD

Analyzed

CVSS 3.1

6.5 (Medium), sumber NVD
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H · uraikan di kalkulator

Jenis kelemahan (CWE)

CWE-1333: Inefficient Regular Expression Complexity

EPSS (30 hari)

0,43% peluang dieksploitasi; lebih tinggi dari 35,2% CVE lain

Produk dan versi terdampak

> Data dari konfigurasi CPE di NVD.

Referensi dan perbaikan

• https://github.com/nearform/fast-jwt/security/advisories/GHSA-cjw9-ghj4-fwxf exploit · mitigasi · advisory vendor
• https://github.com/nearform/fast-jwt/commit/b0be0ca161593836a153d5180ca5358ad9b5de94 patch
• https://github.com/nearform/fast-jwt/pull/595 issue tracking · patch
• https://github.com/nearform/fast-jwt/releases/tag/v6.2.1 product · release notes