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Untriaged
Permalink CVE-2026-33537
created 2 weeks, 5 days ago
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 internal services using direct IP addresses, bypassing all four protection configuration settings even when they are set to their secure defaults. Version 7.5.1 contains a fix for the issue.

Affected products

Lychee
  • ==< 7.5.1

Matching in nixpkgs

pkgs.lychee

Fast, async, stream-based link checker written in Rust

pkgs.lycheeslicer

All-in-one 3D slicer for resin and FDM printers

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