CVE-2026-54430: OpenIDC liboauth2, SSRF

Описание

Оригинално описание

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

Засегнати продукти

• OpenIDC liboauth2: преди 2.3.0

Вид слабост

• CWE-918 Server-Side Request Forgery

История

Други уязвимости в OpenIDC liboauth2

• 5.1CVE-2026-54431

Първоизточници

• https://www.cve.org/CVERecord?id=CVE-2026-54430
• https://nvd.nist.gov/vuln/detail/CVE-2026-54430
• https://cert.pl/en/posts/2026/07/CVE-2026-54430
• https://github.com/OpenIDC/liboauth2
• https://github.com/OpenIDC/liboauth2/commit/347507ac5b51f48c2933bbe49b2ee07c2af4712b