Dassault Systèmes Tuleap: Authorization bypass via user-controlled key
Summary
Tuleap Enterprise Edition versions 17.0 through 17.5 contain an authorization bypass (CWE-639). An attacker with tracker administration rights on a single tracker can update or delete fields of all trackers on the instance. The CNA rates the issue CVSS 3.1 8.1 (High); the attack requires a valid account and no user interaction.
Affected
- Tuleap Enterprise Edition 17.0-1 to 17.0-41
- Tuleap Enterprise Edition 17.5-1 to 17.5-32
- Default configuration: unaffected according to the CNA record
Fixed in
Unknown. No fixed build was found in the sources. Do not assume that 17.0-42 or 17.5-33 is fixed; confirm with Dassault Systèmes.
Workaround
- No vendor workaround documented.
- Review and reduce tracker administration rights.
- Audit tracker field changes and deletions.
- Restrict access to the instance where possible.
Exploitation
- No evidence of exploitation in the wild; not listed in KEV.
- No public proof of concept found.
- CISA SSVC: exploitation none, automatable no, technical impact total.
- EPSS 0.00234 (low).
Our recommendation
- Confirm the affected and fixed builds with Dassault Systèmes or Tuleap support and obtain the advisory text.
- Inventory all Tuleap instances and versions, including 17.0 and 17.5 builds.
- Reduce the number of users with tracker administration rights now.
- Check the newer 3DS advisory for Tuleap 17.5 (CVE-2026-111497) and patch the related CVEs in the batch together (CVE-2026-105407, CVE-2026-105409, CVE-2026-105412).
Public exploits
PoC-in-GitHub, Metasploit and Exploit-DB list nothing for this CVE.
Research sources
- 3DS Security Advisory CVE-2026-105411 www.3ds.com
- Vulners CVE-2026-105411 vulners.com
- VulDB 416875 vuldb.com
- OpenCVE CVE-2026-105411 app.opencve.io
- 3DS Security Advisory CVE-2026-111497 www.3ds.com
- Strix CVE-2026-105407 www.strix.ai
Researched and written up in English and German by an AI (Claude by Anthropic) based on NVD, CISA, EPSS and the sources listed. The vendor information is authoritative. Researched on 1 Nov 2026, 20:01.
Original description (NVD)
An Authorization Bypass Through User-Controlled Key vulnerability affecting Tuleap Enterprise Edition from 17.0 through 17.5 could allow an attacker with tracker administration rights on one tracker to update or delete fields of all the trackers on the instance.
Sources
The tracker combines official, freely usable data sources – updated continuously:
- NVD (NIST) – CVEs, rating (CVSS), affected products
- CISA KEV – vulnerabilities confirmed by CISA as actively exploited
- CISA Vulnrichment – CISA assessment (SSVC) in the official CVE record
- FIRST EPSS – probability of exploitation
- Microsoft MSRC – Patch Tuesday: vulnerabilities, severity, updates
- PoC-in-GitHub – public proof-of-concept repositories
- Metasploit (Rapid7) – modules of the Metasploit Framework
- Exploit-DB (OffSec) – archive of public exploits (links only)
- Patch days: official vendor pages (linked per vendor) (Vendor patch days)
This product uses data from the NVD API but is not endorsed or certified by the NVD. EPSS data © FIRST.org.
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