# CVE-2020-19825: Cross-site Scripting in kimai/kimai

> Attackers can exploit a Cross-Site Scripting vulnerability in Kimai to gain escalated privileges within the application.

- **Severity:** Critical 9.6 (`CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H`)
- **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:** 15 Feb 2023
- **Updated:** 19 Mar 2025
- **Also known as:** GHSA-r58m-v5pr-jhhq

## What is CVE-2020-19825?

CVE-2020-19825 is a critical cross-site scripting vulnerability in n/a, published on 15 Feb 2023. 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

Cross Site Scripting (XSS) vulnerability in kevinpapst kimai2 1.30.0 in /src/Twig/Runtime/MarkdownExtension.php, allows attackers to gain escalated privileges.

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

## Which versions are affected by CVE-2020-19825?

2 open source packages ship an affected version, including kimai/kimai. It affects 1 product.


| Package | Ecosystem | Affected | Fixed in |
| --- | --- | --- | --- |
| `kimai/kimai` | Packagist | All versions | 1.1 |
| `kimai/kimai` | Packagist | All versions | 1.1 |

Products: Kimai Kimai.

## How do I fix CVE-2020-19825?

Upgrade kimai/kimai to 1.1 or later.

## Is CVE-2020-19825 being exploited?

There is no known exploitation of CVE-2020-19825 in the wild and no public exploit code.

## Other vulnerabilities in n/a

- [CVE-2023-53957](https://insights.sbomify.com/CVE-2023-53957/): Kimai 1.30.10 SameSite Cookie Vulnerability Session Hijacking (high 8.5)
- [CVE-2021-43515](https://insights.sbomify.com/CVE-2021-43515/): Improper Neutralization of Formula Elements in a CSV File in Kimai 2 (high 7.8)
- [CVE-2023-46245](https://insights.sbomify.com/CVE-2023-46245/): Kimai (Authenticated) SSTI to RCE by Uploading a Malicious Twig File (high 7.2)
- [CVE-2026-23626](https://insights.sbomify.com/CVE-2026-23626/): Kimai Vulnerable to Authenticated Server-Side Template Injection (SSTI) (medium 6.8)
- [CVE-2024-29200](https://insights.sbomify.com/CVE-2024-29200/): API returns timesheet entries a user should not be authorized to view (medium 6.8)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2020-19825 and fix it if it is affected.

What it is: CVE-2020-19825 is a critical cross-site scripting vulnerability in n/a, published on 15 Feb 2023. 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-2020-19825 in the wild and no public exploit code.

Affected packages and fixed versions:
- kimai/kimai (Packagist): affected all versions; fixed in 1.1
- kimai/kimai (Packagist): affected all versions; fixed in 1.1

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-2020-19825/ (Markdown: https://insights.sbomify.com/CVE-2020-19825/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2020-19825
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2020-19825
- OSV: https://osv.dev/vulnerability/CVE-2020-19825

---
From sbomify Insights: https://insights.sbomify.com/CVE-2020-19825/
Summaries are generated and may contain mistakes; the official description above is the record.