CVE-2026-39963
CVE-2026-39963 · Serendipity: Host Header Injection enables authentication cookie scoping to an attacker-controlled domain
Esta página presenta datos de fuentes públicas de vulnerabilidades. Consulta el aviso original antes de actualizar.
Serendipity is a PHP-powered weblog engine. In versions 2.6-beta2 and below, the serendipity_setCookie() function in include/functions_config.inc.php uses $_SERVER['HTTP_HOST'] without validation as the domain parameter of setcookie(). An attacker who can influence the Host header at login time, such as via MITM, reverse proxy misconfiguration, or load balancer manipulation, can force authentication cookies including session tokens and auto-login tokens to be scoped to an attacker-controlled domain. This enables session fixation, token leakage to attacker-controlled infrastructure, and privilege escalation if an admin logs in under a poisoned Host header. This issue has been fixed in version 2.6.0.
CVSS 6.9 · Media · EPSS 0,2% · Corrección disponible
- Publicación
- Actualización
Pila tecnológica: php
Productos y versiones afectados
serendipity
- Versiones
- < 2.6.0: Afectada
Sin corrección publicada
s9y/serendipity Packagist
- Versiones
- 2.0.0
- 2.0.1
- 2.0.2
- 2.0.3
- 2.0.4
- 2.0.5
- 2.1-beta1
- 2.1-beta2
- 2.1-beta3
- 2.1-rc1
- 2.1.0
- 2.1.1
- 2.1.2
- 2.1.3
- 2.1.4
- 2.1.5
- 2.1.6
- 2.2.1-alpha1
- 2.3-beta1
- 2.3-rc1
- 2.3.0
- 2.3.1
- 2.3.2
- 2.3.3
- 2.3.4
- 2.3.5
- 2.4-beta1
- 2.4.0
- 2.5-beta1
- 2.5.0
- 2.6-beta1
- Intervalos de versiones afectados
- ECOSYSTEM: < 2.6.0
Actualiza a 2.6.0