Vulnerability · Published Aug 19, 2026 · Assigned by GitHub_M

CVE-2026-68900Wekan: Stored XSS in HTML board exports through a card-title second parse

High 7.6

In plain English

A high-severity cross-site scripting in wekan from wekan. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.4% (higher than 29% of all known vulnerabilities).

Severity (CVSS 3.1)7.6High

Exploit odds (30 days)0.4%top 71.2% of all CVEs

Exploited in the wildNo reportsCISA SSVC: poc

Attack toolingNoneno public tooling known

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.

Affected products (as reported)

Vendor	Product	Versions
wekan	wekan	>= 8.72, < 10.23

Weakness: CWE-79 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:L/A:N

References

https://github.com/wekan/wekan/security/advisories/GHSA-8r5p-4q9j-f5jx x_refsource_CONFIRM
https://github.com/wekan/wekan/commit/2d32e34621d340b00be4f66a6a2106ab4575cc70 x_refsource_MISC
https://github.com/wekan/wekan/releases/tag/v10.23 x_refsource_MISC