# CVE-2025-6839: Conjure Position Department Service Quality Evaluation System head.php eval backdoor

> Remote attackers can execute arbitrary code via a backdoor in the head.php file of the Conjure Position Department Service Quality Evaluation System.

- **Severity:** Medium 5.3 (`CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P`)
- **Exploited in the wild:** Not known
- **Login needed:** Any signed-in user
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 29 Jun 2025
- **Updated:** 30 Jun 2025
- **Also known as:** GHSA-397x-mch8-3p5m

## What is CVE-2025-6839?

CVE-2025-6839 is a medium-severity code injection vulnerability in Conjure Position Department Service Quality Evaluation System, published on 29 Jun 2025. Any signed-in user can exploit it over the network, with no action from the victim.

### Official description

A vulnerability, which was classified as critical, has been found in Conjure Position Department Service Quality Evaluation System up to 1.0.11. Affected by this issue is the function eval of the file public/assets/less/bootstrap-less/mixins/head.php. The manipulation of the argument payload leads to backdoor. The attack may be launched remotely. The exploit has been disclosed to the public and may be used.

Weakness: CWE-912 (Hidden Functionality)

## Which versions are affected by CVE-2025-6839?


## How do I fix CVE-2025-6839?

No fix has been published for CVE-2025-6839 yet. Limit exposure of the affected software until one is available.

## Is CVE-2025-6839 being exploited?

There is no known exploitation of CVE-2025-6839 in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2025-6839 and fix it if it is affected.

What it is: CVE-2025-6839 is a medium-severity code injection vulnerability in Conjure Position Department Service Quality Evaluation System, published on 29 Jun 2025. Any signed-in user can exploit it over the network, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2025-6839 in the wild and no public exploit code.

Affected product: Conjure Position Department Service Quality Evaluation System. 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-2025-6839/ (Markdown: https://insights.sbomify.com/CVE-2025-6839/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2025-6839
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2025-6839
- OSV: https://osv.dev/vulnerability/CVE-2025-6839

---
From sbomify Insights: https://insights.sbomify.com/CVE-2025-6839/
Summaries are generated and may contain mistakes; the official description above is the record.