CVSS 3.1
Вероятност да бъде експлоатирана в следващите 30 дни (EPSS)
Атакува се
Време до експлоатация
Атакува се по мрежата, без особени условия, с обикновен потребителски вход и без действие от потребителя.
- Експлоатация: има публичен пример за експлоатация
- Атаката не може да се автоматизира
Описание
Оригинално описание
Caddy is an extensible server platform that uses TLS by default. Prior to 2.11.4, forward_auth copy_headers deletes the exact client-supplied identity header before copying the trusted value from the auth gateway. But when the request later goes through php_fastcgi, Caddy normalizes HTTP headers into CGI variables by replacing - with _. This lets a client send an underscore alias that survives the forward_auth delete step but becomes the same PHP/FastCGI variable. Result: a remote client can inject or sometimes override identity/group headers trusted by PHP/FastCGI applications behind Caddy. This vulnerability is fixed in 2.11.4.
Засегнати продукти
- caddyserver caddy: < 2.11.4
- Red Hat Red Hat Hardened Images
Вид слабост
История
- 23 юни 2026 Публикувано
Други уязвимости в caddyserver caddy
Първоизточници
- https://www.cve.org/CVERecord?id=CVE-2026-52845
- https://nvd.nist.gov/vuln/detail/CVE-2026-52845
- https://github.com/caddyserver/caddy/security/advisories/GHSA-f59h-q822-g45g
- https://access.redhat.com/security/cve/CVE-2026-52845
- https://bugzilla.redhat.com/show_bug.cgi?id=2491907
- https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-52845.json