# CVE-2020-29204: Cross-site Scripting in XXL-JOB

> Stored XSS in XXL-JOB admin allows attackers to execute scripts, potentially leading to session hijacking or account takeover.

- **Severity:** Medium 6.1 (`CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N`)
- **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:** Yes
- **Published:** 27 Dec 2020
- **Updated:** 4 Aug 2024
- **Also known as:** GHSA-wc73-w5r9-x9pc

## What is CVE-2020-29204?

CVE-2020-29204 is a medium-severity cross-site scripting vulnerability in n/a, published on 27 Dec 2020. 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

XXL-JOB 2.2.0 allows Stored XSS (in Add User) to bypass the 20-character limit via xxl-job-admin/src/main/java/com/xxl/job/admin/controller/UserController.java.

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

## Which versions are affected by CVE-2020-29204?

2 open source packages ship an affected version, including com.xuxueli:xxl-job-core. It affects 1 product.


| Package | Ecosystem | Affected | Fixed in |
| --- | --- | --- | --- |
| `com.xuxueli:xxl-job-core` | Maven | All versions | 2.3.0 |
| `com.xuxueli:xxl-job-core` | Maven | All versions | 2.3.0 |

Products: Xuxueli Xxl-Job.

## How do I fix CVE-2020-29204?

Upgrade com.xuxueli:xxl-job-core to 2.3.0 or later.

## Is CVE-2020-29204 being exploited?

There is no known exploitation of CVE-2020-29204 in the wild and no public exploit code.

Public exploit code:

- https://github.com/shoucheng3/xuxueli__xxl-job_CVE-2020-29204_2-2-0 (github_poc): https://github.com/shoucheng3/xuxueli__xxl-job_CVE-2020-29204_2-2-0

## Other vulnerabilities in n/a

- [CVE-2022-40929](https://insights.sbomify.com/CVE-2022-40929/): XXL-JOB contains a Command execution vulnerability in background tasks (critical 9.8)
- [CVE-2024-42681](https://insights.sbomify.com/CVE-2024-42681/): Improper Preservation of Permissions in xxl-job (high 8.8)
- [CVE-2024-24113](https://insights.sbomify.com/CVE-2024-24113/): XXL-JOB vulnerable to Server-Side Request Forgery (high 8.8)
- [CVE-2023-48089](https://insights.sbomify.com/CVE-2023-48089/): xxl-job-admin vulnerable to Remote Code Execution (high 8.8)
- [CVE-2020-24922](https://insights.sbomify.com/CVE-2020-24922/): xuxueli xxl-job Cross-Site Request Forgery Vulnerability (high 8.8)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2020-29204 and fix it if it is affected.

What it is: CVE-2020-29204 is a medium-severity cross-site scripting vulnerability in n/a, published on 27 Dec 2020. 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-2020-29204 in the wild and no public exploit code.

Affected packages and fixed versions:
- com.xuxueli:xxl-job-core (Maven): affected all versions; fixed in 2.3.0
- com.xuxueli:xxl-job-core (Maven): affected all versions; fixed in 2.3.0

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-2020-29204/ (Markdown: https://insights.sbomify.com/CVE-2020-29204/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2020-29204
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2020-29204
- OSV: https://osv.dev/vulnerability/CVE-2020-29204

---
From sbomify Insights: https://insights.sbomify.com/CVE-2020-29204/
Summaries are generated and may contain mistakes; the official description above is the record.