CVE-2026-96655: media server before 1.43.0.10861 (exclusive); +1 more affected products

CVE-2026-96655 affects Plex Media Server. CVSS 3.1 base score 4.3 (MEDIUM, Source advisory). EPSS 0.00222 (percentile 0.11974), scored 20-Oct-2026. Listed in CISA KEV, added 20-Oct-2026.

Affected technology

media server · before 1.43.0.10861 (exclusive)
plex

Media Server · 0 to before 1.43.3.10861
Plex

Description’s affected range: before 1.43.3.10861

Component: Not specified by the source

Attack conditions (Source advisory, CVSS 4.0): Network (remote) · Low privileges required · No user interaction required

What an attacker can do

An authenticated user can request arbitrary internal or external addresses via the '/video/:/transcode/universal' path parameter. Source advisory’s CVSS 4.0 assessment (base score 5.3/10) rates confidentiality impact as low; integrity and availability impact as none.

Published 20-Oct-2026 21:23 UTC

CWE: CWE-918
Vendor: Plex
Product: Media Server
CCR priority: 80.0 /100 (P1)
CVSS 3.1: 4.3 /10 · CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N · Source advisory
EPSS: 0.00222 · percentile 0.11974 · 2026-10-20
KEV: yes · added 2026-10-20 · due 2026-11-03
Exploit signals: CISA KEV listing.

Required action — CISA

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.

Provenance

CISA Known Exploited Vulnerabilities Catalog (JSON) · Source record · observed 2026-10-20 22:45:07.697411+00:00 UTC
NVD CVE API 2.0 · Source record · observed 2026-10-20 21:22:07.084487+00:00 UTC

Stable permalink: https://cybercodered.org/item/cve-cve-2026-96655.html