Is CVE-2025-27156 in the CISA KEV catalog?

No. CVE-2025-27156 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2025-27156?

CVE-2025-27156 has a CVSS v3 base score of 4.1 (MEDIUM).

What is the EPSS score for CVE-2025-27156?

CVE-2025-27156 has an EPSS score of 0.24% (15th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2025-27156?

Upgrade tuleap to 16.4-6 or later.

CVE & CISA-KEV Catalog

CVE-2025-27156

MEDIUM

4.1

CVSS v3

NVD

Description

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.

CWE-79Cross-Site Scripting (XSS)

How to fix

Remediation Available

tuleapNVD

Affected:>= 16.4, < 16.4-6Fixed in:16.4-6CVE-2025-27156derived from NVD

Affected:< 16.4.99.1740567344Fixed in:16.4.99.1740567344CVE-2025-27156derived from NVD

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorNetwork

Attack ComplexityLow

Privileges RequiredLow

User InteractionRequired

ScopeChanged

Impact

ConfidentialityNone

IntegrityLow

AvailabilityNone

CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:N/I:L/A:N

Exploit Intelligence

0.24%probability of exploitation in 30 days

15thpercentile

Low risk: more likely to be exploited than 15% of all known CVEs.

References

Patch3

Related Vulnerabilities

Other CWE-79 (Cross-Site Scripting (XSS)) vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2020-11022	Medium	6.9	99%	-	Fix
CVE-2019-3929	Critical	9.8	99%	KEV	Fix
CVE-2020-9496	Medium	6.1	99%	-	-
CVE-2023-28341	Medium	6.1	99%	-	Fix
CVE-2018-12998	Medium	6.1	98%	-	-
CVE-2025-4123	High	7.6	98%	-	Fix

Embed a live status badge for CVE-2025-27156

Markdown

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2025-08-22.