Gitea: Stored XSS via glTF `extensionsRequired` in Gitea 3D File Viewer

Summary Me again. Gitea's built-in 3D file viewer powered by Online3DViewer is vulnerable to stored cross-site scripting XSS through crafted .gltf files. When a glTF file declares an unsupported required extension, Online3DViewer generates an error message containing the extension name and Gitea...

PT-2026-50586

Name of the Vulnerable Software and Affected Versions Gitea versions 1.25.0 and later Description Gitea is subject to stored cross-site scripting XSS through the built-in 3D file viewer, which utilizes the Online3DViewer library. The issue occurs when a .gltf file contains an unsupported extensio...