kiwitcms vulnerable to stored XSS via unrestricted files upload
Impact
Kiwi TCMS allows users to upload attachments to test plans, test cases, etc. Earlier versions of Kiwi TCMS had introduced upload validators in order to prevent potentially dangerous files from being uploaded, see GHSA-fwcf-753v-fgcj and Content-Security-Policy definition to prevent cross-site-scripting attacks, see GHSA-2wcr-87wf-cf9j.
The upload validation checks were not robust enough which left the possibility of an attacker to circumvent them and upload a potentially dangerous file. Exploting this flaw a combination of files could be uploaded so that they work together to circumvent the existing Content-Security-Policy and allow execution of arbitrary JavaScript in the browser.
Patches
- File upload validation code has been improved
- Kiwi TCMS will now force
Content-Type: text/plainwhen serving uploaded files
Workarounds
- Force the Content-Type header via a custom Django middleware, see
ExtraHeadersMiddlewarein https://github.com/kiwitcms/Kiwi/blob/master/tcms/core/middleware.py#L23 and/or - Force the Content-Type header via Nginx overrides, see
location /uploads/in https://github.com/kiwitcms/Kiwi/blob/master/etc/nginx.conf
References
Disclosed by Antonio Spataro and ek1ng. Additional credits to Ahmed Rabeaa Mosa.
Affected software
Click a technology to see all vulnerabilities affecting it.
| Platform | Package | Vulnerable versions | Fixed in |
|---|---|---|---|
| Python (PyPI) | kiwitcms | < 12.3 | 12.3 |
References
- https://github.com/kiwitcms/Kiwi/security/advisories/GHSA-2wcr-87wf-cf9j
- https://github.com/kiwitcms/Kiwi/security/advisories/GHSA-fwcf-753v-fgcj
- https://github.com/kiwitcms/Kiwi/security/advisories/GHSA-x7c2-7wvg-jpx7
- https://nvd.nist.gov/vuln/detail/CVE-2023-32686
- https://github.com/kiwitcms/Kiwi
- https://kiwitcms.org/blog/kiwi-tcms-team/2023/05/22/kiwi-tcms-123
- https://pypi.org/project/kiwitcms
- https://github.com/advisories/GHSA-x7c2-7wvg-jpx7
- CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N- Weakness (CWE)
CWE-434, CWE-79- Platform
- Python (PyPI)
- Package
kiwitcms- Disclosed
- 22.05.2023
- Updated
- 11.10.2026 15:17
Sources and licenses
OSV / GitHub Advisory Database - PYSEC-2026-1500 - PyPA Advisory Database; CC BY 4.0
OSV / GitHub Advisory Database - GHSA-x7c2-7wvg-jpx7 - CC BY 4.0
Vulnerability history: kiwitcms
All published vulnerabilities of this package (Python (PyPI)), newest first. Shows whether this is a one-off slip or a package that needs watching.
- Total entries
- 13
- First → latest
- 11.2022 07.2026
- Without a fix
- 3
- Exploited in attacks
- 0
Severity breakdown
- High 7
- Medium 3
- Low 3
Disclosures per year
- 2022: 1
- 2023: 9
- 2024: 0
- 2025: 0
- 2026: 3
-
kiwitcms vulnerable to stored XSS via unrestricted files upload this entry
Know which vulnerabilities affect your application
With the DockRay integration and software inventory enabled, DockRay checks reported component versions against known vulnerabilities and notifies you about confirmed matches. Coverage depends on the supported technology and available advisory data.