Meetecho Janus WebRTC Server up to 1.4.0 path traversal

Summaryinfo

A vulnerability, which was classified as problematic, has been found in Meetecho Janus WebRTC Server up to 1.4.0. This affects an unknown function. The manipulation leads to path traversal. This vulnerability is referenced as CVE-2026-117373. Remote exploitation of the attack is possible. No exploit is available.

Detailsinfo

A vulnerability was found in Meetecho Janus WebRTC Server up to 1.4.0. It has been rated as problematic. This issue affects an unknown functionality. The manipulation with an unknown input leads to a path traversal vulnerability. Using CWE to declare the problem leads to CWE-22. The product uses external input to construct a pathname that is intended to identify a file or directory that is located underneath a restricted parent directory, but the product does not properly neutralize special elements within the pathname that can cause the pathname to resolve to a location that is outside of the restricted directory. Impacted is confidentiality. The summary by CVE is:

Janus WebRTC Server 1.2.3 through 1.4.0 is vulnerable to Directory Traversal. The application accepts a caller supplied media path when an ondemand stream is created. The path is validated only by checking whether it contains one of the audio extensions and is then passed to the file source which opens it. No canonicalization is performed and no directory allowlist is enforced, so an unauthenticated caller can make the server open an arbitrary local file and use it as a media source, with the content delivered to viewers as RTP audio.

The advisory is shared at github.com. The identification of this vulnerability is CVE-2026-117373 since 10/27/2026. The exploitation is known to be easy. The attack may be initiated remotely. No form of authentication is needed for a successful exploitation. Neither technical details nor an exploit are publicly available. The price for an exploit might be around USD $0-$5k at the moment (estimation calculated on 11/11/2026). MITRE ATT&CK project uses the attack technique T1006 for this issue.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

Vendor

• Meetecho

Name

• Janus WebRTC Server

Version

• 1.0
• 1.1
• 1.2
• 1.3
• 1.4.0

CPE 2.3info

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CPE 2.2info

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Entryinfo

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

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