XSS in Openproject
CVE-2026-25764
OpenProject is an open-source, web-based project management software. Prior to versions 16.6.7 and 17.0.3, an HTML injection vulnerability occurs in the time tracking function of OpenProject. The application does not escape HTML tags, an attacker with administrator privileges can create a work package with the name containing the HTML tags and add it to the Work package section when creating time tracking. This issue has been patched in versions 16.6.7 and 17.0.3.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 3.5 (Low). Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:N/I:L/A:L.
EPSS exploit prediction
EPSS: 0.004 (27.3th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 27th percentile — 27.3% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.002 · newest: 0.004 · change: +0.001
Affected products
- Openproject
- Opf Openproject — versions < 16.6.7, < 17.0.3
Weakness classification (CWE)
References
- github.com/opf/openproject/security/advisories/GHSA-q523-c695-h3hp (Vendor Advisory)
- github.com/opf/openproject/releases/tag/v16.6.7 (Product, Release Notes)
- github.com/opf/openproject/releases/tag/v17.0.3 (Product, Release Notes)
Frequently asked questions
- What is CVE-2026-25764?
- CVE-2026-25764 is a low-severity vulnerability in Openproject, classified under Improper Neutralization of Script-Related HTML Tags in a Web Page (Basic XSS). CVSS score: 3.5/10. Published 2026-02-06.
- How severe is CVE-2026-25764?
- Low severity. CVSS v3 base score is 3.5 out of 10.