# CVE-2025-66378: Missing authorization in Infinity

> An attacker can disconnect RTMP streams traversing a Proxy Node due to insufficient access control in Pexip Infinity.

- **Severity:** Medium 5.9 (`CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 25 Dec 2025
- **Updated:** 26 Dec 2025
- **Also known as:** GHSA-34j4-424f-xr64

## What is CVE-2025-66378?

CVE-2025-66378 is a medium-severity missing authorization vulnerability in Pexip Pexip Infinity, published on 25 Dec 2025. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

Pexip Infinity 38.0 and 38.1 before 39.0 has insufficient access control in the RTMP implementation, allowing an attacker to disconnect RTMP streams traversing a Proxy Node.

Weakness: CWE-863 (Incorrect Authorization)

## Which versions are affected by CVE-2025-66378?

It affects 1 product.


Products: Pexip Pexip Infinity.

## How do I fix CVE-2025-66378?

No fix has been published for CVE-2025-66378 yet. Limit exposure of the affected software until one is available.

## Is CVE-2025-66378 being exploited?

There is no known exploitation of CVE-2025-66378 in the wild and no public exploit code.

## Other vulnerabilities in Pexip Pexip Infinity

- [CVE-2026-103110](https://insights.sbomify.com/CVE-2026-103110/): Memory corruption in Infinity (critical 9.8)
- [CVE-2020-11805](https://insights.sbomify.com/CVE-2020-11805/): Missing authorization in n/a (critical 9.8)
- [CVE-2015-4719](https://insights.sbomify.com/CVE-2015-4719/): Privilege escalation in n/a (critical 9.8)
- [CVE-2017-6551](https://insights.sbomify.com/CVE-2017-6551/): Other in n/a (critical 9.8)
- [CVE-2026-103105](https://insights.sbomify.com/CVE-2026-103105/): Missing authorization in Infinity (high 8.8)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2025-66378 and fix it if it is affected.

What it is: CVE-2025-66378 is a medium-severity missing authorization vulnerability in Pexip Pexip Infinity, published on 25 Dec 2025. An attacker can exploit it over the internet without logging in, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2025-66378 in the wild and no public exploit code.

Affected product: Pexip Pexip Infinity. 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-2025-66378/ (Markdown: https://insights.sbomify.com/CVE-2025-66378/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2025-66378
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2025-66378
- OSV: https://osv.dev/vulnerability/CVE-2025-66378

---
From sbomify Insights: https://insights.sbomify.com/CVE-2025-66378/
Summaries are generated and may contain mistakes; the official description above is the record.