Skip to main content
VulnerabilityPublished

CVE-2026-30235: opf openproject · Cross-site Scripting

Affects opf openprojectSource CVE Database V5

0
Compare

Not known to be exploited · CVSS 6.5 Medium : upgrade to 17.2.0 when convenient.

Data as of 30 Oct 2026, 11:52 UTC

CVSS 3.1 base score
6.5Medium
How severe the flaw is on the 0–10 CVSS scale.
EPSS
0.3% chance of exploitation in 30 days – higher than 27% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
Patch
Available – fixed in 17.2.0
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 11 Mar 2026

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponized: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 30 Oct 2026.

What to do

Upgrade openproject and opf/openproject to 17.2.0.

Affected software

ProductAffectedFixed in
opfopenprojectAffected
  • <17.2.0
Fixed in
  • 17.2.0
GitHubopf/openprojectpkg:github/opf/openprojectOther threatsAffected
  • <17.2.0
Fixed in
  • 17.2.0

Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.

AI-suggested

To mitigate this vulnerability, organizations should upgrade OpenProject to version 17.2.0 or later, where the issue is fixed. Until upgrading is possible, administrators can implement strict input validation and sanitization on Markdown content, particularly scrutinizing hyperlink inputs to prevent injection of malicious payloads. Employing Content Security Policy (CSP) headers can help reduce the impact of injected scripts by restricting script execution sources. Monitoring application logs for unusual JavaScript errors or page crashes can aid in early detection of exploitation attempts. Limiting user privileges to the minimum necessary reduces the attack surface, as exploitation requires at least low privileges. Regularly reviewing and updating third-party dependencies and plugins associated with OpenProject can also prevent similar vulnerabilities. Finally, educating users about the risks of injecting untrusted Markdown content can reduce inadvertent exposure.

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.

References

Community reviews

Loading reviews…