CVE-2025-30203

Medium

Published: 31 March 2025

Published

31 March 2025

Modified

21 August 2025

KEV Added

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Patch

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CVSS Score v3.1 4.8 CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:N/I:L/A:L

EPSS Score 0.0029 52.5th percentile

Risk Priority 10 60% EPSS · 20% KEV · 20% CVSS

Summary

CVE-2025-30203 is a medium-severity Cross-site Scripting (CWE-79) vulnerability in Enalean Tuleap. Its CVSS base score is 4.8 (Medium).

Operationally, exploitation aligns with the MITRE ATT&CK technique JavaScript (T1059.007); ranked in the top 47.5% of CVEs by exploit likelihood; it is not currently listed in the CISA KEV catalog.

EU & UK References

🇪🇺 ENISA EUVD: EUVD-2025-8850

Vulnerability details

Tuleap is an Open Source Suite to improve management of software developments and collaboration. Tuleap allows cross-site scripting (XSS) via the content of RSS feeds in the RSS widgets. A project administrator or someone with control over an used RSS…

feed could use this vulnerability to force victims to execute uncontrolled code. This vulnerability is fixed in Tuleap Community Edition 16.5.99.1742562878 and Tuleap Enterprise Edition 16.5-5 and 16.4-8.

CWE(s): CWE-79 CWE-84

Related Threats

MITRE ATT&CK Enterprise TechniquesAI

T1059.007 JavaScript Execution

Adversaries may abuse various implementations of JavaScript for execution.

attack.mitre.org →

T1190 Exploit Public-Facing Application Initial Access

Adversaries may attempt to exploit a weakness in an Internet-facing host or system to initially access a network.

attack.mitre.org →

T1539 Steal Web Session Cookie Credential Access

An adversary may steal web application or service session cookies and use them to gain access to web applications or Internet services as an authenticated user without needing credentials.

attack.mitre.org →

T1659 Content Injection Initial Access

Adversaries may gain access and continuously communicate with victims by injecting malicious content into systems through online network traffic.

attack.mitre.org →

Why these techniques?

XSS via RSS feed content enables content injection (T1659) and exploitation of a public-facing application (T1190), allowing JavaScript execution (T1059.007) in victims' browsers to steal web session cookies (T1539).