CVE-2026-39971: Serendipity: güvenlik açığı

Açıklama (NVD)

Serendipity is a PHP-powered weblog engine. In versions 2.6-beta2 and below, the email sending functionality in include/functions.inc.php inserts $_SERVER['HTTP_HOST'] directly into the Message-ID SMTP header without validation, and the existing sanitization function serendipity_isResponseClean() is not called on HTTP_HOST before embedding it. An attacker who can control the Host header during an email-triggering action such as comment notifications or subscription emails can inject arbitrary SMTP headers into outgoing emails. This enables identity spoofing, reply hijacking via manipulated Message-ID threading, and email reputation abuse through the attacker's domain being embedded in legitimate mail headers. This issue has been fixed in version 2.6.0.

Özet bilgiler

Ürün

S9y Serendipity

CVSS v3.1

7.2 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N

EPSS

%0,26 (yüzdelik 17)

CWE

CWE-113

Yama

Mevcut

Etkilenen sürümler

Kaynaklar

• NVD kaydı
• github.com
• github.com
• CWE-113