# CVE-2023-6380: Open Redirect in Alkacon Software OpenCms

> Attackers can redirect users to malicious sites via unsanitized URI parameters in the Mercury template, potentially leading to phishing or credential theft.

- **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:** No
- **Published:** 13 Dec 2023
- **Updated:** 28 Aug 2024
- **Also known as:** GHSA-q324-xr3g-8g3f

## What is CVE-2023-6380?

CVE-2023-6380 is a medium-severity vulnerability in Alkacon Open CMS, published on 13 Dec 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

Open redirect vulnerability has been found in the Open CMS product affecting versions 14 and 15 of the 'Mercury' template. An attacker could create a specially crafted URL and send it to a specific user to redirect them to a malicious site and compromise them. Exploitation of this vulnerability is possible due to the fact that there is no proper sanitization of the 'URI' parameter.

Weakness: CWE-601 (URL Redirection to Untrusted Site)

## Which versions are affected by CVE-2023-6380?

It affects 1 product.


Products: Alkacon Opencms.

## How do I fix CVE-2023-6380?

No fix has been published for CVE-2023-6380 yet. Limit exposure of the affected software until one is available.

## Is CVE-2023-6380 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2023-6380 exists.

Public exploit code:

- OpenCms 14 & 15 - Open Redirect (nuclei): http/cves/2023/CVE-2023-6380.yaml

## Other vulnerabilities in Alkacon Open CMS

- [CVE-2018-8811](https://insights.sbomify.com/CVE-2018-8811/): Cross-site request forgery in n/a (high 8.8)
- [CVE-2019-11819](https://insights.sbomify.com/CVE-2019-11819/): Alkacon OpenCMS CSV Injection via New User module (high 7.8)
- [CVE-2005-4475](https://insights.sbomify.com/CVE-2005-4475/): Cross-site scripting in n/a (medium 6.8)
- [CVE-2024-42699](https://insights.sbomify.com/CVE-2024-42699/): OpenCMS Cross-Site Scripting vulnerability (medium 6.5)
- [CVE-2021-3312](https://insights.sbomify.com/CVE-2021-3312/): XML External Entity Reference in org.opencms:opencms-core (medium 6.5)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2023-6380 and fix it if it is affected.

What it is: CVE-2023-6380 is a medium-severity vulnerability in Alkacon Open CMS, published on 13 Dec 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: It is not confirmed as exploited in the wild, but public exploit code for CVE-2023-6380 exists.

Affected product: Alkacon Open CMS. 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-2023-6380/ (Markdown: https://insights.sbomify.com/CVE-2023-6380/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2023-6380
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2023-6380
- OSV: https://osv.dev/vulnerability/CVE-2023-6380

---
From sbomify Insights: https://insights.sbomify.com/CVE-2023-6380/
Summaries are generated and may contain mistakes; the official description above is the record.