CVE-2025-66372 Mustangproject allows exfiltrating files via XXE attacks
Low 2.8
Published
Updated
Check this codebase for CVE-2025-66372 and fix it if it is affected.
What it is: CVE-2025-66372 is a low-severity vulnerability in mustangproject Mustang, published on 28 Nov 2025. It can only be exploited from the same machine or local network, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2025-66372 in the wild and no public exploit code.
Affected packages and fixed versions:
- org.mustangproject:library (Maven): affected all versions; fixed in 2.16.3
- org.mustangproject:library (Maven): affected all versions; fixed in 2.16.3
- org.mustangproject:validator (Maven): affected all versions; fixed in 2.16.3
- org.mustangproject:validator (Maven): affected all versions; fixed in 2.16.3
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-2025-66372/ (Markdown: https://insights.sbomify.com/CVE-2025-66372/index.md)
An attacker can exfiltrate files from the system by exploiting an XML External Entity vulnerability in the Mustang library.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2025-66372?
CVE-2025-66372 is a low-severity vulnerability in mustangproject Mustang, published on 28 Nov 2025. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
Mustang before 2.16.3 allows exfiltrating files via XXE attacks.
Weakness: CWE-611
Which versions are affected by CVE-2025-66372?
4 open source packages ship an affected version, including org.mustangproject:library and org.mustangproject:validator.
| Package | Affected | Fixed in |
|---|---|---|
org.mustangproject:library Maven | All versions | 2.16.3 |
org.mustangproject:library Maven | All versions | 2.16.3 |
org.mustangproject:validator Maven | All versions | 2.16.3 |
org.mustangproject:validator Maven | All versions | 2.16.3 |
How do I fix CVE-2025-66372?
Upgrade org.mustangproject:library to 2.16.3 or later.
Is CVE-2025-66372 being exploited?
There is no known exploitation of CVE-2025-66372 in the wild and no public exploit code.
Sources
Also known as GHSA-x832-fpvj-r5ph.