EUVD-2026-28804

Flarum is open-source forum software. Prior to versions 1.8.16 and 2.0.0-rc.1, Flarum's patch for CVE-2023-27577 restricted the @import and data-uri LESS features in the customless setting, but the same restriction was never applied to other settings registered as LESS config variables for exampl...

CVE-2026-41887: Improper Limitation of a Pathname to a Restricted Directory

Flarum is open-source forum software. Prior to versions 1.8.16 and 2.0.0-rc.1, Flarum's patch for CVE-2023-27577 restricted the @import and data-uri LESS features in the customless setting, but the same restriction was never applied to other settings registered as LESS config variables for exampl...

Flarum: Path traversal in LESS parser via theme color settings (incomplete fix for CVE-2023-27577)

Summary Flarum's patch for CVE-2023-27577 restricted the @import and data-uri LESS features in the customless setting, but the same restriction was never applied to other settings registered as LESS config variables for example themeprimarycolor and themesecondarycolor, as well as any key...