CVE-2026-102273

Katalog CVE

CVSS 7.4 · High EPSS 0,18%

Kerentanan Improper Verification of Cryptographic Signature pada pyjwt project pyjwt. Skor CVSS 3.1 7.4 (High) menurut github.com.

Deskripsi (NVD)

PyJWT is a Python implementation of JSON Web Token standards. From 2.13.0 until 2.14.0, PyJWT HMACAlgorithm.prepare_key is affected because HMAC key guard only recognizes top-level public JWK forms and misses container representations. This occurs when an application allows HMAC and asymmetric algorithms and passes a public JWK container as the raw key. As a result, public asymmetric key material is accepted as the HMAC secret. Consequently, an attacker who knows the public key can forge a token with arbitrary authenticated claims. 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

7.4 (High), sumber github.com
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N · uraikan di kalkulator

Jenis kelemahan (CWE)

CWE-347: Improper Verification of Cryptographic Signature

EPSS (30 hari)

0,18% peluang dieksploitasi; lebih tinggi dari 6,4% CVE lain

Produk dan versi terdampak

> Data dari konfigurasi CPE di NVD.

Referensi dan perbaikan

• https://github.com/jpadilla/pyjwt/security/advisories/GHSA-w2cx-738m-mc7w advisory vendor
• https://github.com/jpadilla/pyjwt/commit/801cd128528c62d9b23fcd161d1a2e1c17982f95 patch
• https://github.com/jpadilla/pyjwt/releases/tag/2.14.0 product · release notes