CVE-2020-26171
In tangro Business Workflow before 1.18.1, the documentId of attachment uploads to /api/document...
In tangro Business Workflow before 1.18.1, the documentId of attachment uploads to /api/document/attachments/upload can be manipulated. By doing this, users can add attachments to workitems that do not belong to them.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- Low
- User interaction
- None
What an attacker can affect
- Confidentiality
- None
- Integrity
- Low
- Availability
- None
Exploit likelihood
What each source reports
CVE List Score used
In tangro Business Workflow before 1.18.1, the documentId of attachment uploads to /api/document/attachments/upload can be manipulated. By doing this, users can add attachments to workitems that do not belong to them.
- Record
CVE-2020-26171- CVSS 3.1
- 4.3 Medium
CVSS:3.1/AC:L/AV:N/A:N/C:N/I:L/PR:L/S:U/UI:N - Updated
- 2026-11-02
EUVDEUVD-2020-18796
In tangro Business Workflow before 1.18.1, the documentId of attachment uploads to /api/document/attachments/upload can be manipulated. By doing this, users can add attachments to workitems that do not belong to them.
- Record
EUVD-2020-18796- CVSS 3.1
- 4.3 Medium
CVSS:3.1/AC:L/AV:N/A:N/C:N/I:L/PR:L/S:U/UI:N - Updated
- 2026-11-03
GitHub AdvisoriesGHSA-xv6f-5jw7-pmw8 No score
In tangro Business Workflow before 1.18.1, the documentId of attachment uploads to /api/document...
In tangro Business Workflow before 1.18.1, the documentId of attachment uploads to /api/document/attachments/upload can be manipulated. By doing this, users can add attachments to workitems that do not belong to them.
- Record
GHSA-xv6f-5jw7-pmw8- Weakness
- CWE-732
- Updated
- 2026-11-02
NVD
In tangro Business Workflow before 1.18.1, the documentId of attachment uploads to /api/document/attachments/upload can be manipulated. By doing this, users can add attachments to workitems that do not belong to them.
- Record
CVE-2020-26171- CVSS 3.1
- 4.3 Medium
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N - CVSS 2.0
- 4.0 Medium
AV:N/AC:L/Au:S/C:N/I:P/A:N - Weakness
- CWE-639
- Updated
- 2026-11-02
Affected products
History
| Recorded | Changed | Sources |
|---|---|---|
| aliases | EUVD | |
| first indexed | CVE List, GitHub Advisories, NVD |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2020-26171 is a medium vulnerability (CVSS 4.3) in Tangro Business Workflow, published December 18, 2020. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.58%, the 48th percentile. No source names a fixed version.