CVE-2026-33537

Lychee (open-source photo management) is affected by an SSRF issue in Photo::fromUrl due to incomplete IP validation that does not block loopback and link-local addresses. Before version 7.5.1, an authenticated user could reach internal services via direct IPs, bypassing all four protection confi...

CVE-2026-33537 Lychee has SSRF bypass via incomplete IP validation in Photo::fromUrl — loopback and link-local IPs not blocked

Lychee is a free, open-source photo-management tool. The patch introduced for GHSA-cpgw-wgf3-xc6v SSRF via Photo::fromUrl contains an incomplete IP validation check that fails to block loopback addresses and link-local addresses. Prior to version 7.5.1, an authenticated user can still reach...