🛡️ CVE-2026-33644
🟡 CVSS 4.3 — Medium ⚠️ Exploit Public CWE-918 NVD
4.3
CVSS Score
0 Low4 Medium7 High9 Critical10

Description

Lychee is a free, open-source photo-management tool. Prior to version 7.5.2, the SSRF protection in `PhotoUrlRule.php` can be bypassed using DNS rebinding. The IP validation check (line 86-89) only activates when the hostname is an IP address. When a domain name is used, `filter_var($host, FILTER_VALIDATE_IP)` returns `false`, skipping the entire check. Version 7.5.2 patches the issue.

Details

Severity MEDIUM
CVSS Score 4.3
CVSS Vector CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
CWE CWE-918
Public Exploit ⚠️ Yes
Source NVD
Published 2026-03-26
Updated 2026-06-02
Modified 2026-03-30

Affected Packages

Software From version Fixed in
lychee 7.5.2

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