Vulnerability

CVE-2026-96652

Medium· 4.3KEVCVSS4.3EPSS0%

.rules3/5

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.

Threat signal

60/100

Elevated

Severity

medium

CVSS

4.3

EPSS

Active

KEV

CISA KEV — actively exploited

10d remaining

AffectedPlex — Media Server

Added to KEV

2026-10-20

Federal patch due (BOD 22-01)

2026-11-03

Required action (CISA verbatim)

Apply mitigations in accordance with vendor instructions, ensuring compliance with CISA’s BOD 26-04 Prioritizing Security Updates Based on Risk (see URL in Notes) guidance and CISA’s “Forensics Triage Requirements” (see URL in Notes). Follow applicable BOD 26-04 guidance for cloud services or discontinue use of the product if mitigations are unavailable. Stakeholders are responsible for evaluating each asset's internet exposure and ensuring adherence to BOD 26-04 patching guidelines.

Vendor advisory + references

CISA description: “Plex Media Server contains a server-side request forgery (SSRF) vulnerability which could allow an attacker using any X-Plex-Token value to include a full URL in the 'protocol' parameter and force the Plex server to POST to the attacker's chosen destination. This vulnerability can be chained with CVE-2026-96654, CVE-2026-96655, and CVE-2026-96656. ”

CVSS

v3.1via NVDOpen in FIRST calculator →

4.3/ 10MEDIUMCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N

Attack VectorNetworkExploitable remotely over the internet — no local access needed.
Attack ComplexityLowNo special conditions — exploit works reliably.
Privileges RequiredLowStandard user privileges sufficient.
User InteractionNoneFully automated — no victim action needed.
ScopeUnchangedImpact contained to the vulnerable component.
Confidentiality ImpactLowSome data disclosure; attacker doesn't fully control what.
Integrity ImpactNoneNo integrity impact.
Availability ImpactNoneNo availability impact.

EPSS

Exploit prediction · 30-day horizonFIRST.org →

0.22%

probability of exploitation in next 30 days

p12

higher than 12% of all CVEs

4-day trend↑ 0pp

Low exploitation likelihood — defer if no other signals fire.

Vendor VEX

No VEX statements published for CVE-2026-96652. Vendors publish VEX (Vulnerability Exploitability eXchange) to assert per-product whether a CVE is actually exploitable in their distribution.

SSVCAttend

Active exploitation with limited impact — coordinate patching

exploitation: active
automatable: no
impact: partial
mission: support

Lifecycle

2026-09-23Published
2026-10-20Added to CISA KEVransomware: Unknown
2026-10-20Vendor advisory · cisa-aacisa-adds-six-known-exploited-vulnerabilities-catalog — CISA Adds Six Known Exploited Vulnerabilities to Catalog
2026-10-20Mentioned in rss:cisaCISA Adds Six Known Exploited Vulnerabilities to Catalog
2026-10-21Mentioned in rss:thehackernewsCISA Orders Federal Agencies to Patch Exploited Plex2Shell, Siemens, and SiteGua
2026-10-21Last modified2 sources
2026-11-03Federal patch due (BOD 22-01)

Entity graph

4 nodes · 3 edges · click to pivot

CVEActorVendor advisoryIOCNews

Vendor advisories

cisa-aacisa-adds-six-known-exploited-vulnerabilities-catalogCISA Adds Six Known Exploited Vulnerabilities to Catalog

CVE-2026-96652

CISA KEV — actively exploited

CVSS

EPSS

Vendor VEX

Lifecycle

Entity graph

Vendor advisories

Mentions in news & research

References

CVE-2026-96652

CISA KEV — actively exploited

CVSS

EPSS

Vendor VEX

Lifecycle

Entity graph

Vendor advisories

Mentions in news & research

References