# 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.

- **Severity:** Not scored
- **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 available:** No
- **Published:** 15 Sep 2026
- **Updated:** 17 Sep 2026
- **Also known as:** GHSA-473p-56xx-vg67, PYSEC-2026-2551

## 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 (Improper Neutralization of Input During Web Page Generation)

## Which versions are affected by CVE-2026-55630?

3 open source packages ship an affected version, including kiwitcms.


| Package | Ecosystem | 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.

## Is CVE-2026-55630 being exploited?

There is no known exploitation of CVE-2026-55630 in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-55630 and fix it if it is affected.

What it is: 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.
Exploitation: There is no known exploitation of CVE-2026-55630 in the wild and no public exploit code.

Affected packages and fixed versions:
- kiwitcms (PyPI): affected all versions up to 12.4; no fix listed
- kiwitcms (PyPI): affected all versions up to 12.4; no fix listed
- kiwitcms (PyPI): affected all versions up to 12.4; no fix listed

Task:
1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.
2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.
3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.
4. Run the tests and summarise what changed and why.
5. If nothing in the project is affected, say so and change nothing.

Reference: https://insights.sbomify.com/CVE-2026-55630/ (Markdown: https://insights.sbomify.com/CVE-2026-55630/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-55630
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-55630
- OSV: https://osv.dev/vulnerability/CVE-2026-55630

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From sbomify Insights: https://insights.sbomify.com/CVE-2026-55630/
Summaries are generated and may contain mistakes; the official description above is the record.