CVE-2026-30235CWE-79

Business Logic Error on OpenProject through hyperlinks in markdown using DOM clobbering

Medium · published March 11, 2026

CVSS v3.1
6.5
EPSS
1%
Percentile
47.3
In the wild
Unconfirmed
What it is

OpenProject is an open-source, web-based project management software. Prior to 17.2.0, this vulnerability occurs due to improper validation of OpenProject’s Markdown rendering, specifically in the hyperlink handling. This allows an attacker to inject malicious hyperlink payloads that perform DOM clobbering. DOM clobbering can crash or blank the entire page by overwriting native DOM functions with HTML elements, causing critical JavaScript calls to throw runtime errors during application initialization and halt further execution. This vulnerability is fixed in 17.2.0.

The record
Technical detail
CVSS v3.1
6.5 · MEDIUM
Vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
CVSS v4.0
Not supplied
EPSS
0.00586 · 47.3th percentile
Weakness
CWE-79 · Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Published
2026-03-11T16:06Z
EPSS history
Timeline
  • 11 MAR 16:06Z
    Business Logic Error on OpenProject through hyperlinks in markdown using DOM clobbering
    cvelistv5