XSS in Enalean Tuleap

CVE-2025-27156

Tuleap is an Open Source Suite to improve management of software developments and collaboration. The mass emailing features do not sanitize the content of the HTML emails. A malicious user could use this issue to facilitate a phishing attempt or to indirectly exploit issues in the recipients mail clients. This vulnerability is fixed in Tuleap Community Edition 16.4.99.1740567344 and Tuleap Enterprise Edition 16.4-6 and 16.3-11.

Vulnerability class: XSS (Cross-Site Scripting)

EPSS: 0.002 (16.2th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 4.1 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:N/I:L/A:N.

Affected products

Weakness classification (CWE)

Public proof-of-concept exploits

References

Frequently asked questions

What is CVE-2025-27156?
CVE-2025-27156 is a medium-severity vulnerability in Enalean Tuleap, classified under Cross-site Scripting. CVSS score: 4.1/10. Published 2025-03-04.
How severe is CVE-2025-27156?
Medium severity. CVSS v3 base score is 4.1 out of 10.
Is CVE-2025-27156 known to be exploited?
2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.