# CVE-2019-17427: Cross-site scripting in n/a

> Persistent XSS in Redmine allows attackers to inject malicious scripts via textile formatting, potentially leading to session hijacking or code execution.

- **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:** 10 Oct 2019
- **Updated:** 5 Aug 2024
- **Also known as:** DEBIAN-CVE-2019-17427, GHSA-g969-264w-g9pr, UBUNTU-CVE-2019-17427

## What is CVE-2019-17427?

CVE-2019-17427 is a medium-severity cross-site scripting vulnerability in Redmine Redmine, published on 10 Oct 2019. 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

In Redmine before 3.4.11 and 4.0.x before 4.0.4, persistent XSS exists due to textile formatting errors.

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

## Which versions are affected by CVE-2019-17427?

It affects 1 product.


Products: Redmine Redmine.

## How do I fix CVE-2019-17427?

Upgrade to a fixed version.

## Is CVE-2019-17427 being exploited?

There is no known exploitation of CVE-2019-17427 in the wild and no public exploit code.

Public exploit code:

- CVE-2019-17427 Persistent XSS POC (github_poc): https://github.com/RealLinkers/CVE-2019-17427

## Other vulnerabilities in Redmine Redmine

- [CVE-2022-44030](https://insights.sbomify.com/CVE-2022-44030/): Missing authorization in n/a (high 7.5)
- [CVE-2021-37156](https://insights.sbomify.com/CVE-2021-37156/): Security feature bypass in n/a (high 7.5)
- [CVE-2011-4929](https://insights.sbomify.com/CVE-2011-4929/): Command injection in n/a (high 7.5)
- [CVE-2009-4079](https://insights.sbomify.com/CVE-2009-4079/): Cross-site request forgery in n/a (medium 6.8)
- [CVE-2023-47258](https://insights.sbomify.com/CVE-2023-47258/): Cross-site scripting in n/a (medium 6.1)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2019-17427 and fix it if it is affected.

What it is: CVE-2019-17427 is a medium-severity cross-site scripting vulnerability in Redmine Redmine, published on 10 Oct 2019. 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-2019-17427 in the wild and no public exploit code.

Affected product: Redmine Redmine. 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-2019-17427/ (Markdown: https://insights.sbomify.com/CVE-2019-17427/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2019-17427
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2019-17427
- OSV: https://osv.dev/vulnerability/CVE-2019-17427

---
From sbomify Insights: https://insights.sbomify.com/CVE-2019-17427/
Summaries are generated and may contain mistakes; the official description above is the record.