CVE-2026-30235 Business Logic Error on OpenProject through hyperlinks in markdown using DOM clobbering

What is CVE-2026-30235?

CVE-2026-30235 is a medium-severity vulnerability in opf openproject, published on 11 Mar 2026.

Official 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.

Weakness: CWE-79

Which versions are affected by CVE-2026-30235?

It affects 1 product.

Products include Openproject Openproject.

How do I fix CVE-2026-30235?

No fix has been published for CVE-2026-30235 yet. Limit exposure of the affected software until one is available.

Is CVE-2026-30235 being exploited?

There is no known exploitation of CVE-2026-30235 in the wild and no public exploit code.

Other vulnerabilities in opf openproject

• CVE-2026-34717 OpenProject: SQL Injection in Cost Reporting =n Operator via parse_number_string Critical 9.9
• CVE-2026-25763 Command Injection on OpenProject repositories leads to Remote Code Execution Critical 9.4
• CVE-2026-24685 OpenProject has Argument Injection on Repository module that allows Arbitrary File Write Critical 9.4
• CVE-2026-32698 OpenProject has a SQL Injection via Custom Field Name that can be chained to Remote Code Execution Critical 9.1
• CVE-2026-32703 OpenProject's repository files are served with the MIME type allowing them to be used to bypass Content Security Policy Critical 9.1

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as GHSA-9rv2-9xv5-gpq8.