CVE-2026-55630 Kiwi TCMS: Stored XSS via javascript: URI in extra_link field (TestPlan & TestCase)
Stored XSS in Kiwi TCMS allows attackers to execute scripts via unsanitized extra_link fields, primarily affecting customized deployments with weakened CSP settings.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2026-55630?
CVE-2026-55630 is a cross-site scripting vulnerability in kiwitcms Kiwi, published on 15 Sep 2026. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
Official description
Kiwi TCMS is an open source test management system. Prior to 16.1, TestCase.extra_link and TestPlan.extra_link accepted unsanitized user input and rendered stored values verbatim, creating an opportunity for cross-site scripting. Official Docker images and unmodified Kiwi TCMS middleware send a Content-Security-Policy header that blocks inline JavaScript, making exploitation difficult in default deployments, while customized deployments that weaken those security settings may remain vulnerable. Version 16.1 properly sanitizes both fields and resets existing database records that do not validate to null. This issue is fixed in version 16.1.
Weakness: CWE-79
Which versions are affected by CVE-2026-55630?
3 open source packages ship an affected version, including kiwitcms.
| Package | Affected | Fixed in |
|---|---|---|
kiwitcms PyPI | All versions to 12.4 | None |
kiwitcms PyPI | All versions to 12.4 | None |
kiwitcms PyPI | All versions to 12.4 | None |
How do I fix CVE-2026-55630?
No fix has been published for CVE-2026-55630 yet. Limit exposure of the affected software until one is available.
Escape output for the context it lands in and set a strict Content Security Policy. Upgrading the affected component is the real fix. More about Cross-site scripting.
Is CVE-2026-55630 being exploited?
There is no known exploitation of CVE-2026-55630 in the wild and no public exploit code.
Sources
Also known as GHSA-473p-56xx-vg67, PYSEC-2026-2551.