CVE-2026-63771Adminer < 5.4.3 Cookie Injection via X-Forwarded-Prefix Header

Descripción

Adminer before 5.4.3 contains a cookie injection vulnerability that allows attackers to manipulate cookie attributes by injecting arbitrary values through the unsanitized X-Forwarded-Prefix HTTP header used in Set-Cookie path attributes. Attackers can exploit a misconfigured reverse proxy to downgrade SameSite protection and enable cross-origin authenticated requests, bypassing cookie security controls.

Datos: CVE.org, NVD, CISA KEV, FIRST EPSS, Ubuntu. Se publican tal como los indican las fuentes, en inglés.

Productos y versiones afectados

Referencias y parches

• Researcher Disclosure technical-descriptionexploitissue-tracking
• GitHub Security Advisory (GHSA-c533-9qwm-8w5h) vendor-advisory
• Release Notes release-notes
• https://www.vulncheck.com/advisories/adminer-cookie-injection-via-x-forwarded-prefix-header third-party-advisory