CVE-2026-54430

Katalog CVE

CVSS 5.1 · Medium EPSS 0,17%

Kerentanan Server-Side Request Forgery (SSRF). Skor CVSS 4.0 5.1 (Medium) menurut cert.pl.

Deskripsi (NVD)

liboauth2 is vulnerable to Server-Side Request Forgery in oauth2_jose_jwks_aws_alb_resolve() function. The AWS ALB verifier reads both signer and kid from the unverified JWT header. If signer matches the configured ARN, kid is appended to alb_base_url without URL encoding or path sanitization, and the HTTP GET is issued before signature verification. This allows an attacker to force the server to send a GET request to an attacker-chosen internal path. This issue was fixed in version 2.3.0

Rincian

Terbit di NVD

2 Juli 2026

Terakhir diubah

2 Juli 2026

Status NVD

Deferred

CVSS 4.0

5.1 (Medium), sumber cert.pl
CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:L/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 · uraikan di kalkulator

Jenis kelemahan (CWE)

CWE-918: Server-Side Request Forgery (SSRF)

EPSS (30 hari)

0,17% peluang dieksploitasi; lebih tinggi dari 5,7% CVE lain

Produk dan versi terdampak

NVD belum mencantumkan data produk (CPE) untuk CVE ini. Produk yang terdampak biasanya disebut di deskripsi dan di advisory vendor pada daftar referensi.

Referensi dan perbaikan

• https://cert.pl/en/posts/2026/07/CVE-2026-54430
• https://github.com/OpenIDC/liboauth2
• https://github.com/OpenIDC/liboauth2/commit/347507ac5b51f48c2933bbe49b2ee07c2af4712b