# CVE-2025-15251: beecue FastBee SIP Message ReqAbstractHandler.java getRootElement xml external entity reference

> Remote attackers can exploit an XML External Entity vulnerability in the FastBee SIP message handler to read sensitive data or cause denial of service.

- **Severity:** Medium 6.3 (`CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:X`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 30 Dec 2025
- **Updated:** 30 Dec 2025
- **Also known as:** GHSA-5pmw-cmp3-g6wx

## What is CVE-2025-15251?

CVE-2025-15251 is a medium-severity vulnerability in beecue FastBee, published on 30 Dec 2025. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

A vulnerability was detected in beecue FastBee up to 2.1. Impacted is the function getRootElement of the file springboot/fastbee-server/sip-server/src/main/java/com/fastbee/sip/handler/req/ReqAbstractHandler.java of the component SIP Message Handler. The manipulation results in xml external entity reference. It is possible to launch the attack remotely. A high complexity level is associated with this attack. The exploitability is considered difficult. The project owner replied to the issue report: "Okay, we'll handle it as soon as possible."

Weakness: CWE-611 (Improper Restriction of XML External Entity Reference), CWE-610 (Externally Controlled Reference to a Resource in Another Sphere)

## Which versions are affected by CVE-2025-15251?


## How do I fix CVE-2025-15251?

No fix has been published for CVE-2025-15251 yet. Limit exposure of the affected software until one is available.

## Is CVE-2025-15251 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2025-15251 exists.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2025-15251 and fix it if it is affected.

What it is: CVE-2025-15251 is a medium-severity vulnerability in beecue FastBee, published on 30 Dec 2025. An attacker can exploit it over the internet without logging in, with no action from the victim.
Exploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2025-15251 exists.

Affected product: beecue FastBee. 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-2025-15251/ (Markdown: https://insights.sbomify.com/CVE-2025-15251/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2025-15251
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2025-15251
- OSV: https://osv.dev/vulnerability/CVE-2025-15251

---
From sbomify Insights: https://insights.sbomify.com/CVE-2025-15251/
Summaries are generated and may contain mistakes; the official description above is the record.