CVE-2026-39963
CVE-2026-39963 · Serendipity: Host Header Injection enables authentication cookie scoping to an attacker-controlled domain
Cette page présente des faits issus de sources publiques. Consultez l’avis original avant toute mise à jour.
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 · Moyenne · EPSS 0,2% · Correctif disponible
- Publication
- Mise à jour
Pile logicielle: php
Produits et versions concernés
serendipity
- Versions du logiciel
- < 2.6.0: Concernée
Aucun correctif publié
s9y/serendipity Packagist
- Versions du logiciel
- 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
- Plages de versions concernées
- ECOSYSTEM: < 2.6.0
Mettez à jour vers 2.6.0