# CVE-2023-50727: Resque vulnerable to reflected XSS in Queue Endpoint

> Attackers can execute arbitrary JavaScript in the context of other users via a reflected XSS vulnerability in the Resque queue endpoint.

- **Severity:** Medium 6.3 (`CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:L/I:H/A:N`)
- **Exploited in the wild:** Not known
- **Login needed:** Any signed-in user
- **Attackable:** Over the internet
- **Victim action needed:** A user has to click or open something
- **Fix available:** Yes
- **Published:** 22 Dec 2023
- **Updated:** 23 Apr 2025
- **Also known as:** GHSA-r9mq-m72x-257g

## What is CVE-2023-50727?

CVE-2023-50727 is a medium-severity cross-site scripting vulnerability in resque, published on 22 Dec 2023. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.

### Official description

Resque is a Redis-backed Ruby library for creating background jobs, placing them on multiple queues, and processing them later. Reflected XSS issue occurs when /queues is appended with /"><svg%20onload=alert(domain)>. This issue has been patched in version 2.6.0.

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

## Which versions are affected by CVE-2023-50727?

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


| Package | Ecosystem | Affected | Fixed in |
| --- | --- | --- | --- |
| `resque` | RubyGems | All versions | 2.6.0 |
| `resque` | RubyGems | All versions | 2.6.0 |

Products: Resque Resque.

## How do I fix CVE-2023-50727?

Upgrade resque to 2.6.0 or later.

## Is CVE-2023-50727 being exploited?

There is no known exploitation of CVE-2023-50727 in the wild and no public exploit code.

## Other vulnerabilities in resque

- [CVE-2023-50725](https://insights.sbomify.com/CVE-2023-50725/): Resque vulnerable to reflected XSS in resque-web failed and queues lists (medium 6.3)
- [CVE-2023-50724](https://insights.sbomify.com/CVE-2023-50724/): Resque vulnerable to reflected cross site scripting through pathname (medium 6.3)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2023-50727 and fix it if it is affected.

What it is: CVE-2023-50727 is a medium-severity cross-site scripting vulnerability in resque, published on 22 Dec 2023. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.
Exploitation: There is no known exploitation of CVE-2023-50727 in the wild and no public exploit code.

Affected packages and fixed versions:
- resque (RubyGems): affected all versions; fixed in 2.6.0
- resque (RubyGems): affected all versions; fixed in 2.6.0

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-2023-50727/ (Markdown: https://insights.sbomify.com/CVE-2023-50727/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2023-50727
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2023-50727
- OSV: https://osv.dev/vulnerability/CVE-2023-50727

---
From sbomify Insights: https://insights.sbomify.com/CVE-2023-50727/
Summaries are generated and may contain mistakes; the official description above is the record.