CVE-2026-30974

Copyparty is a portable file server. Prior to v1.20.11., the nohtml config option, intended to prevent execution of JavaScript in user-uploaded HTML files, did not apply to SVG images. A user with write-permission could upload an SVG containing embedded JavaScript, which would execute in the...

copyparty: volflag `nohtml` did not block javascript in svg files

Summary The nohtml config option, intended to prevent execution of JavaScript in user-uploaded HTML files, did not apply to SVG images. Details A user with write-permission could upload an SVG containing embedded JavaScript, which would execute in the context of whichever user opens it. This in...

GHSA-M6HV-X64C-27MM copyparty: volflag `nohtml` did not block javascript in svg files

Summary The nohtml config option, intended to prevent execution of JavaScript in user-uploaded HTML files, did not apply to SVG images. Details A user with write-permission could upload an SVG containing embedded JavaScript, which would execute in the context of whichever user opens it. This in...