# CVE-2026-55630: Kiwi TCMS stored XSS in TestPlan and TestCase extra_link fields

Source: https://junglewise.ai/threats/cve-2026-55630-kiwi-tcms-stored-xss-in-testplan-and-testcase-extra-link-fields  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-09-15. Updated: 2026-07-06  
License: CC BY 4.0 with a link back

CVE-2026-55630 · Severity: low · CVSS 3.1 · Published 2026-09-15

Kiwi TCMS, an open-source test management system, is vulnerable to a security flaw where malicious links can be saved within test plans and test cases. If a user clicks on one of these specially crafted links, an attacker could execute unauthorized scripts in the user's browser. While default installations using Docker are protected by built-in security headers, customized setups may be at risk of data theft or account hijacking.

Technologies: [Kiwi TCMS](https://junglewise.ai/threats/technologies/kiwi-tcms), [kiwitcms (PyPI)](https://junglewise.ai/threats/technologies/kiwitcms). Vendors: [Kiwi TCMS](https://junglewise.ai/threats/vendors/kiwi-tcms), [PyPI](https://junglewise.ai/threats/vendors/pypi).

## Quick answers

**Is CVE-2026-55630 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-55630 being exploited in the wild.

**How severe is CVE-2026-55630?** Low severity, with a CVSS score of 3.1, published 15 September 2026.

**Which products and versions are affected?** Kiwi TCMS < 16.1; kiwitcms (PyPI) <= 12.4, ECOSYSTEM:introduced=0,last_affected=12.4.

**Is there a fix for CVE-2026-55630?** A patch was published on 2026-06-24: Version 16.1 released Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

**How is CVE-2026-55630 attacked?** It is attacked over the network, in a network appliance.

**Am I affected by CVE-2026-55630?** Check whether you run Kiwi TCMS or kiwitcms (PyPI) at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## Technical details

A stored cross-site scripting (XSS) vulnerability exists in Kiwi TCMS due to improper neutralization of user-controllable input in the `TestCase.extra_link` and `TestPlan.extra_link` fields. An attacker can inject a `javascript:` URI which is rendered verbatim in the UI, allowing for script execution when a user interacts with the link. The vulnerability is mitigated in official Docker deployments by a strict Content-Security-Policy (CSP) header that blocks inline JavaScript, but remains exploitable in environments with modified security settings. The issue is resolved in version 16.1, which introduces proper sanitization and resets non-conforming database records to null.

## Affected products

- Kiwi TCMS Kiwi TCMS < 16.1

## Identifiers

- CVE-2026-55630
- GHSA-473p-56xx-vg67
- PYSEC-2026-2551

## Timeline

- 2026-06-24: disclosed: Initial disclosure by reporter
- 2026-06-24: patched: Version 16.1 released
- 2026-07-06: advisory: GitHub Advisory published

## References

- [https://api.github.com/users/alanturing881](https://api.github.com/users/alanturing881)
- [https://github.com/alanturing881](https://github.com/alanturing881)
- [https://api.github.com/users/alanturing881/gists%7B/gist_id%7D](https://api.github.com/users/alanturing881/gists%7B/gist_id%7D)
- [https://api.github.com/users/alanturing881/repos](https://api.github.com/users/alanturing881/repos)
- [https://avatars.githubusercontent.com/u/286391906?v=4](https://avatars.githubusercontent.com/u/286391906?v=4)
- [https://api.github.com/users/alanturing881/events%7B/privacy%7D](https://api.github.com/users/alanturing881/events%7B/privacy%7D)

## Related threats

- [Kiwi TCMS account confirmation open redirect via protocol-relative URLs](https://junglewise.ai/threats/cve-2026-77433-kiwi-tcms-account-confirmation-open-redirect-through-protocol)
- [Kiwi TCMS missing authorization in database initialization page](https://junglewise.ai/threats/cve-2026-49292-kiwi-tcms-missing-authorization-in-database-initialization-page)
- [Kiwi TCMS open redirect in account confirmation endpoint](https://junglewise.ai/threats/cve-2026-54724-kiwi-tcms-open-redirect-in-account-confirmation-endpoint)
- [PYSEC-2026-1499 - Kiwi TCMS's misconfigured HTTP headers allow stored XSS execution with Firefox](https://junglewise.ai/threats/cve-2023-36809-kiwi-tcms-s-misconfigured-http-headers-allow-stored-xss-execution)
- [PYSEC-2026-1495 - kiwitcms vulnerable to stored cross-site scripting via unrestricted file upload](https://junglewise.ai/threats/cve-2023-33977-kiwi-tcms-stored-cross-site-scripting-via-unrestricted-file)