Summary
generated automatically from NVD dataPlex Media Server contains a server-side request forgery (CWE-918) in its '/player/timeline' endpoint, affecting versions before 1.43.3.10861. An attacker presenting any X-Plex-Token value can supply a full URL in the 'protocol' parameter, which makes the server send a POST request to a destination of the attacker's choosing. The flaw is listed in the CISA KEV catalog and carries a CVSS v3.1 score of 4.3 (MEDIUM).
NVD description
Plex Media Server before 1.43.3.10861 allows SSRF via '/player/timeline'. An attacker using any X-Plex-Token value can include a full URL in the 'protocol' parameter and force the Plex server to POST to the attacker's chosen destination.
⚠️ Actively exploited — CISA KEV
This CVE was added to CISA's Known Exploited Vulnerabilities catalog on 2026-10-20. It is confirmed exploited in the wild and must be patched as a priority.
Remediation deadline (US federal agencies): 2026-11-03
EPSS · FIRST.org
0.22%probability of exploitation in the next 30 days
Higher than 11% of scored CVEs
EPSS (Exploit Prediction Scoring System) estimates, from observed exploitation activity, how likely a CVE is to be exploited in the next 30 days. It complements CVSS, which measures severity, not likelihood. Score of 2026-10-20, recomputed daily by FIRST.org.
In-depth analysis on cveo.tech
We've published a detailed analysis of this CVE — exploitation, IOCs and mitigation.
CVSS v3.1 Score
Information
- Published
- 23 sept. 2026
- Updated
- 21 oct. 2026
- Status
- Modified
- Source
- 9119a7d8-5eab-497f-8521-727c672e3725
Affected products
Weaknesses (CWE)
References (5)
- https://forums.plex.tv/t/plex-media-server/30447/711Release Notes
- https://www.cve.org/CVERecord?id=CVE-2026-96652Third Party AdvisoryVDB Entry
- https://zmain.info/blog/plex2shellThird Party Advisory
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