CVE-2026-96654

Plex Media Server before 1.43.3.10861 does not correctly neutralize URL values included in 'searchOne,' allowing an attacker to call other plugins' functions and supply their own parameters.

Score

CVSS 4.0 6.9 Medium

Status

Analyzed - 9119a7d8-5eab-497f-8521-727c672e3725

Published

2026-09-23

Last modified

2026-10-21

Known exploited (CISA KEV)

since 2026-10-20, action due 2026-10-23: 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.

Weaknesses

CWE-84

Affected products

• Media Server (Plex)

References

• https://www.cve.org/CVERecord?id=CVE-2026-96654
• https://forums.plex.tv/t/plex-media-server/30447/711
• https://raw.githubusercontent.com/cisagov/CSAF/develop/csaf_files/IT/white/2026/va-26-266-01.json
• https://zmain.info/blog/plex2shell
• https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-96654