# CVE-2026-110717: Janus WebRTC Server through 1.4.3 Path Traversal via Record&Play Filename

> Unauthenticated attackers can write or truncate arbitrary files outside the recordings directory via crafted filenames in the Record&Play plugin.

- **Severity:** Medium 6.9 (`CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 14 Oct 2026
- **Updated:** 14 Oct 2026
- **Also known as:** DEBIAN-CVE-2026-110717, GHSA-rwr7-3rqr-7qwv, UBUNTU-CVE-2026-110717

## What is CVE-2026-110717?

CVE-2026-110717 is a medium-severity path traversal vulnerability in meetecho janus-gateway, published on 14 Oct 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

Janus WebRTC Server through 1.4.3 contains a path traversal vulnerability in the Record&Play plugin that allows unauthenticated attackers to write files outside recordings_path via the record request filename. Attackers can supply filenames with path separators to create or truncate files ending in -audio.mjr, -video.mjr or -data.mjr anywhere the Janus process can write outside protected folders.

Weakness: CWE-22 (Improper Limitation of a Pathname to a Restricted Directory)

## Which versions are affected by CVE-2026-110717?


## How do I fix CVE-2026-110717?

No fix has been published for CVE-2026-110717 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-110717 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-110717 exists.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-110717 and fix it if it is affected.

What it is: CVE-2026-110717 is a medium-severity path traversal vulnerability in meetecho janus-gateway, published on 14 Oct 2026. 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-2026-110717 exists.

Affected product: meetecho janus-gateway. 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-2026-110717/ (Markdown: https://insights.sbomify.com/CVE-2026-110717/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-110717
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-110717
- OSV: https://osv.dev/vulnerability/CVE-2026-110717

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From sbomify Insights: https://insights.sbomify.com/CVE-2026-110717/
Summaries are generated and may contain mistakes; the official description above is the record.