SSRF in Lycheeorg Lychee
CVE-2026-33644
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 addr…
Vulnerability class: SSRF (Server-Side Request Forgery)
EPSS: 0.000 (12.2th percentile) — read the EPSS interpretation.
Affected products
- Lycheeorg Lychee — versions < 7.5.2
Weakness classification (CWE)
References
- https://github.com/LycheeOrg/Lychee/security/advisories/GHSA-5245-4p8c-jwff (x_refsource_CONFIRM)
- https://github.com/LycheeOrg/Lychee/commit/28c5261fb9deab4f9420c8cc2f73a87425939107 (x_refsource_MISC)