High severity · published Oct 12, 2026
CVE-2026-105409
Stored Cross-site Scripting (XSS) vulnerability affecting Tuleap Enterprise Edition from 17.0 through 17.5
8.7
CVSS
0.2%
EPSS
No
On KEV
Description
A Stored Cross-site Scripting (XSS) vulnerability affecting Tuleap Enterprise Edition from 17.0 through 17.5 could allow an attacker to execute arbitrary script code in user's browser session.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:N
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
Required
Confidentiality
High
Integrity
High
Availability
None
Scope
Changed
Exploitation
Is it being used?
Exploit prediction (EPSS)0.2% · higher than 10% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
TE
Tuleap Enterprise Edition · Dassault Systèmes
17.0-1 through 17.0-41; 17.5-1 through 17.5-32 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-105409
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-105409
www.3ds.com
https://www.3ds.com/trust-center/security/security-advisories/cve-2026-105409
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