CVE-2026-33644

MEDIUM SEVERITY

CVSS Score & Metrics

Base Score

4.3 / 10

Vector String

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

Vulnerability 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.

Vulnerability Details

Published Date

March 26, 2026

Last Modified

March 30, 2026

CWE ID

CWE-918

Source

NVD

Vendor

LycheeOrg

Product

Lychee

External References

https://github.com/LycheeOrg/Lychee/commit/28c5261fb9deab4f9420c8cc2f73a87425939107
https://github.com/LycheeOrg/Lychee/security/advisories/GHSA-5245-4p8c-jwff

CVE-2026-33644

CVSS Score & Metrics

Vulnerability Description

Vulnerability Details

External References

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