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.

Attack Vector Network

Attack Complexity Low

Privileges Required None

Attack Requirements None

User Interaction None

Vulnerable System Confidentiality Impact None

Vulnerable System Integrity Impact Low

Vulnerable System Availability Impact None

Subsequent System Confidentiality Impact None

Subsequent System Integrity Impact None

Subsequent System Availability Impact None

Attack Vector Network

Attack Complexity Low

Privileges Required None

Scope Unchanged

Confidentiality Impact None

Integrity Impact Low

Availability Impact None

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

The EPSS score is 0.00463.

Exploitation poc

Automatable yes

Technical Impact partial

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions
meetecho janus-gateway unaffected
Version Status Constraints
0 affected ≤ 1.4.3

No data.

No data.

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No data.

Project Subscriptions

Vendors Products
Meetecho Subscribe
Janus Subscribe
Advisories

No advisories yet.

Fixes

Solution

No solution given by the vendor.

Workaround

No workaround given by the vendor.

References
Link Providers
https://github.com/meetecho/janus-gateway cve-icon cve-icon
https://github.com/meetecho/janus-gateway/blob/1f0b75cac1c9ad819ee4c2a905a2c65b00b82cde/src/plugins/janus_recordplay.c#L1965 cve-icon cve-icon
https://github.com/meetecho/janus-gateway/blob/1f0b75cac1c9ad819ee4c2a905a2c65b00b82cde/src/record.c#L218 cve-icon cve-icon
https://hackmd.io/@1ExmmukzRMWN7B4gQ4W-4Q/HkEaF-piGl cve-icon cve-icon
https://www.vulncheck.com/advisories/janus-webrtc-server-through-1.4.3-path-traversal-via-record-play-filename cve-icon cve-icon
History

Thu, 15 Oct 2026 13:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'poc', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Wed, 14 Oct 2026 15:30:00 +0000

Type Values Removed Values Added
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.
Title Janus WebRTC Server through 1.4.3 Path Traversal via Record&Play Filename
First Time appeared Meetecho
Meetecho janus
Weaknesses CWE-22
CPEs cpe:2.3:a:meetecho:janus:*:*:*:*:*:*:*:*
Vendors & Products Meetecho
Meetecho janus
References
Metrics cvssV3_1

{'score': 5.3, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N'}

cvssV4_0

{'score': 6.9, 'vector': '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'}

Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: VulnCheck

Published:

Updated: 2026-10-14T17:40:56.738Z

Reserved: 2026-10-14T14:39:53.739Z

Link: CVE-2026-110717

cve-icon Vulnrichment

Updated: 2026-10-14T17:40:50.123Z

cve-icon NVD

Status : Received

Published: 2026-10-14T16:17:43.903

Modified: 2026-10-14T18:17:36.223

Link: CVE-2026-110717

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-10-14T20:45:06Z

Weaknesses