CVE-2026-68900 Wekan: Stored XSS in HTML board exports through a card-title second parse
Stored XSS in Wekan HTML exports allows attackers to execute scripts and steal board data when users view exported files.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2026-68900?
CVE-2026-68900 is a high-severity cross-site scripting vulnerability in wekan, published on 19 Aug 2026. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.
Official description
Wekan is open source kanban built with Meteor. From 8.72 until 10.23, addBoardHTMLToZip() in client/lib/exportHTML.js read a card title and body through textContent, which decoded entity-encoded markup, and then interpolated titleText and allText into content.innerHTML in the exported index.html. A board member could store an entity-encoded event-handler payload in a card title that remained inert on the live board but was reparsed and executed when a recipient clicked the card in the downloaded HTML export, allowing the script to read and transmit all board data contained in that export, including content added after the attacker's membership was removed. Version 10.23 builds the modal with DOM nodes and assigns untrusted values through textContent. This issue is fixed in version 10.23.
Weakness: CWE-79
Which versions are affected by CVE-2026-68900?
How do I fix CVE-2026-68900?
No fix has been published for CVE-2026-68900 yet. Limit exposure of the affected software until one is available.
Escape output for the context it lands in and set a strict Content Security Policy. Upgrading the affected component is the real fix. More about Cross-site scripting.
Is CVE-2026-68900 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-68900 exists.
Sources
Also known as GHSA-8r5p-4q9j-f5jx.