CVE-2025-27099: Tuleap allows XSS via the tracker names used in the semantic timeframe deletion message

Severity: medium (CVSS 4.8 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.3% probability of exploitation in the next 30 days
Public exploit or detection template: yes
Published: 2025-03-03 · updated 2026-06-17
Weakness: CWE-79

Description

Tuleap is an Open Source Suite to improve management of software developments and collaboration. Tuleap allows cross-site scripting (XSS) via the tracker names used in the semantic timeframe deletion message. A tracker administrator with a semantic timeframe used by other trackers could use this vulnerability to force other tracker administrators to execute uncontrolled code. This vulnerability is fixed in Tuleap Community Edition 16.4.99.1740067916 and Tuleap Enterprise Edition 16.4-5 and 16.3-10.

Affected products

Enalean tuleap: before 16.3-10; before 16.4.99.1740067916; from 16.4 before 16.4-5 — fixed in 16.3-10, 16.4-5, 16.4.99.1740067916

How to fix

Upgrade to a fixed version: Enalean tuleap 16.3-10, 16.4-5, 16.4.99.1740067916. Check the vendor advisory for mitigations.

References

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