November 14, 2026

CVE Watchtower

CVE-2026-96651Plex Media Server Path Traversal

NVD

Vulnerability Summary

Plex Media Server before 1.43.3.10861 builds a file path from the url parameter without checking it for ../ sequences, allowing path traversal via '/system/agents/media/get'. A remote attacker with a valid session token could read any file that the target user can access. This access includes the PlexOnlineToken, which grants control of the Plex account and server. A LAN-adjacent attacker with a client-supplied X-Forwarded-For header could exploit the same issue.
Severity Level
MEDIUM(6.5)
Published Date
Sep 23, 2026
Last Modified
Sep 23, 2026
Exploitation Status
No confirmed exploitation yet
EPSS Score (30-Day)
0.52%Probability
Root Weakness (CWE)
CWE-22: Path Traversal ↗
The software uses external input to construct a pathname that is intended to identify a file or directory that is located underneath a restricted parent directory.
CVSS v4.0 Base Metrics — Score 7.1 (HIGH)
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N
Attack VectorNetwork
Attack ComplexityLow
Attack RequirementsNone
Privileges RequiredLow
User InteractionNone
Confidentiality (Vulnerable System)High
Integrity (Vulnerable System)None
Availability (Vulnerable System)None
Confidentiality (Subsequent System)None
Integrity (Subsequent System)None
Availability (Subsequent System)None
Show CVSS v3.x metrics (score 6.5)
CVSS v3.1 Base Metrics — Score 6.5 (MEDIUM)
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
Attack VectorNetwork
Attack ComplexityLow
Privileges RequiredLow
User InteractionNone
ScopeUnchanged
ConfidentialityHigh
IntegrityNone
AvailabilityNone

Affected & Patched Versions

Affected Versions
  • Plex Media Server < 1.43.3.10861
Patched Versions
  • Plex Media Server 1.43.3.10861

What to do

Fix it during your normal patch cycle. No exploitation is confirmed yet.

  1. Check whether you run Plex Media Server and which version.
  2. Update to a patched version listed above, then confirm the new version.

Timeline

  • Sep 23, 2026Published
  • Sep 23, 2026Record last modified

Score, severity and exploitation changes are tracked from the day Watchtower started logging them.

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External References

Data last checked: Nov 14, 2026 17:12 UTC