CVE-2026-102269

Katalog CVE

CVSS 5.4 · Medium EPSS 0,19%

Kerentanan Incorrect Behavior Order: Validate Before Canonicalize pada pyjwt project pyjwt. Skor CVSS 3.1 5.4 (Medium) menurut NVD.

Deskripsi (NVD)

PyJWT is a Python implementation of JSON Web Token standards. Prior to 2.14.0, PyJWT signature segment is affected because signature segment decoding accepts characters outside the canonical Base64URL representation. This occurs when non-Base64URL characters are appended to a valid compact JWS signature segment. As a result, base64url_decode produces the same signature bytes for different serialized segments. Consequently, raw-token revocation checks can fail to recognize an equivalent modified token. This issue is fixed in version 2.14.0.

Rincian

Terbit di NVD

28 September 2026

Terakhir diubah

6 Oktober 2026

Status NVD

Analyzed

CVSS 3.1

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

Jenis kelemahan (CWE)

CWE-180: Incorrect Behavior Order: Validate Before Canonicalize

EPSS (30 hari)

0,19% peluang dieksploitasi; lebih tinggi dari 8,1% CVE lain

Produk dan versi terdampak

> Data dari konfigurasi CPE di NVD.

Referensi dan perbaikan

• https://github.com/jpadilla/pyjwt/security/advisories/GHSA-hxm8-2xgr-2p9m exploit · mitigasi · advisory vendor
• https://github.com/jpadilla/pyjwt/commit/e6f48401001609a8f99e71fcaf355fb895d508a8 patch
• https://github.com/jpadilla/pyjwt/releases/tag/2.14.0 product · release notes