CVE-2026-110228

Description

wallabag 2.6.13 through 2.6.14 contains a stored cross-site scripting vulnerability that allows authenticated users to host arbitrary HTML by triggering a failed Pocket HTML, Pocket CSV or Shaarli import. Attackers can upload an HTML file with script but no anchor elements, leaving it at the predictable /uploads/import/<user-id>.html path to execute script in victims' wallabag sessions.

References

• https://github.com/wallabag/wallabag
• https://github.com/wallabag/wallabag/blob/74cbfd945bc316b5cf0308ba56e32fd2ed3443c0/app/config/wallabag.yml#L169-L177
• https://github.com/wallabag/wallabag/blob/74cbfd945bc316b5cf0308ba56e32fd2ed3443c0/src/Wallabag/ImportBundle/Controller/HtmlController.php#L28-L54
• https://github.com/wallabag/wallabag/blob/74cbfd945bc316b5cf0308ba56e32fd2ed3443c0/web/.htaccess#L50-L56
• https://hackmd.io/@1ExmmukzRMWN7B4gQ4W-4Q/wallabag-pocket-html-failed-import-stored-xss