CVE-2026-30235

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

State: Published
Severity: 6.5 Medium
Published: Mar 11, 2026
Updated: Mar 11, 2026
Reserved: Mar 4, 2026

Description

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.

Scores

CVSS	Score	Vector	Source
3.1	6.5 Medium	CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H	GitHub_M

Weaknesses

CWE-79 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

Affected Products

Product	Versions
openprojectopf	< 17.2.0Affected

References

https://github.com/opf/openproject/security/advisories/GHSA-9rv2-9xv5-gpq8

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