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TI-2026-74158 Aliases CVE-2026-110717GHSA-rwr7-3rqr-7qwv

Path traversal in Janus WebRTC Server lets attackers write files

Priority HIGH 70CWE-22Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Attack requirements
None
Impact type
—
Confidentiality · integrity · availability
None · Low · None
Fix status
No fix listed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA.

Summary

Janus WebRTC Server through 1.4.3 has a path traversal flaw (CWE-22) in its Record&Play plugin, where the record request filename is not confined to the recordings path. An unauthenticated remote attacker can supply a filename with path separators to create or truncate files ending in -audio.mjr, -video.mjr or -data.mjr in any location the Janus process can write outside protected folders. A public exploit is linked in the references.

Written with Claude Haiku 5.5 from the sources below · 2026-10-28

Description from the CNA

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.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.00464 40th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by the CNA
Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
Poc
Automatable
Yes
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
meetechojanus-gatewayup to 1.4.3—No fix listedCNA
  • janus-gateway Vendormeetecho Affected up to 1.4.3 Fixed in — No fix listed CNA

Remediation

The sources list no fixed version for janus-gateway.

Written with Claude Haiku 5.5 from the sources below · 2026-10-28

Timeline

  1. 2026-10-14 Threatist record created from CVE-2026-110717
  2. 2026-10-15 Alias added: GHSA-rwr7-3rqr-7qwv
  3. 2026-10-15 CISA SSVC decision points changed
  4. 2026-10-15 Priority changed: MEDIUM → HIGH

References

Exploit 1

Other 3

  • TI-2020-10998 An issue was discovered in janus-gateway (aka Janus WebRTC Server) through 0.10.0. CVSS 3.1CRITICAL 9.8
  • TI-2020-10882 An issue was discovered in janus-gateway (aka Janus WebRTC Server) through 0.10.0. CVSS 3.1CRITICAL 9.8
  • TI-2020-10997 An issue was discovered in janus-gateway (aka Janus WebRTC Server) through 0.10.0. CVSS 3.1CRITICAL 9.8
  • TI-2026-70934 Race condition in meetecho janus-gateway VideoRoom plugin CVSS 4.0LOW 2.3
  • TI-2020-08488 An issue was discovered in Janus through 0.9.1. CVSS 3.1CRITICAL 9.8
  • TI-2020-10881 An issue was discovered in janus-gateway (aka Janus WebRTC Server) through 0.10.0. CVSS 3.1HIGH 7.5
See all 15 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences