# CVE-2023-39521: Tuleap vulnerable to Cross-site Scripting on the success message of a kanban deletion

> An attacker can execute arbitrary code in an administrator's browser by deleting a kanban with a malicious label, potentially leading to account takeover.

- **Severity:** Medium 4.8 (`CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N`)
- **Exploited in the wild:** Not known
- **Login needed:** An administrator
- **Attackable:** Over the internet
- **Victim action needed:** A user has to click or open something
- **Fix available:** No
- **Published:** 24 Aug 2023
- **Updated:** 2 Oct 2024
- **Also known as:** GHSA-h9xc-w7qq-vpfc

## What is CVE-2023-39521?

CVE-2023-39521 is a medium-severity cross-site scripting vulnerability in Enalean Tuleap, published on 24 Aug 2023. An attacker needs administrator access to exploit it, and only if a user opens a file or follows a link.

### Official description

Tuleap is an open source suite to improve management of software developments and collaboration. In Tuleap Community Edition prior to version 14.11.99.28 and Tuleap Enterprise Edition prior to versions 14.10-6 and 14.11-3, content displayed in the "card fields" (visible in the kanban and PV2 apps) is not properly escaped. An agile dashboard administrator deleting a kanban with a malicious label can be forced to execute uncontrolled code. Tuleap Community Edition 14.11.99.28, Tuleap Enterprise Edition 14.10-6, and Tuleap Enterprise Edition 14.11-3 contain a fix for this issue.

Weakness: CWE-79 (Improper Neutralization of Input During Web Page Generation)

## Which versions are affected by CVE-2023-39521?

It affects 1 product.


Products: Enalean Tuleap.

## How do I fix CVE-2023-39521?

No fix has been published for CVE-2023-39521 yet. Limit exposure of the affected software until one is available.

## Is CVE-2023-39521 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2023-39521 exists.

## Other vulnerabilities in Enalean Tuleap

- [CVE-2018-17298](https://insights.sbomify.com/CVE-2018-17298/): Business logic in n/a (critical 9.8)
- [CVE-2018-7538](https://insights.sbomify.com/CVE-2018-7538/): SQL injection in n/a (critical 9.8)
- [CVE-2014-7178](https://insights.sbomify.com/CVE-2014-7178/): Command injection in n/a (critical 9.3)
- [CVE-2021-43806](https://insights.sbomify.com/CVE-2021-43806/): SQL injection in Tuleap (high 8.8)
- [CVE-2021-41154](https://insights.sbomify.com/CVE-2021-41154/): SQL injection in the "SVN core" commits browser (high 8.8)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2023-39521 and fix it if it is affected.

What it is: CVE-2023-39521 is a medium-severity cross-site scripting vulnerability in Enalean Tuleap, published on 24 Aug 2023. An attacker needs administrator access to exploit it, and only if a user opens a file or follows a link.
Exploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2023-39521 exists.

Affected product: Enalean Tuleap. No package-level version data is available, so check the vendor advisory linked from the reference page.

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-2023-39521/ (Markdown: https://insights.sbomify.com/CVE-2023-39521/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2023-39521
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2023-39521
- OSV: https://osv.dev/vulnerability/CVE-2023-39521

---
From sbomify Insights: https://insights.sbomify.com/CVE-2023-39521/
Summaries are generated and may contain mistakes; the official description above is the record.