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Known Exploited Vulnerability
6.9
MEDIUM CVSS 4.0
CVE-2026-96654
Plex Media Server Improper Neutralization of Encoded URI Schemes in a Web Page Vulnerability - [Actively Exploited]
Overview
Description

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.

Details
INFO

Published Date :

Sept. 23, 2026, 5:17 p.m.

Last Modified :

Oct. 21, 2026, 1:09 p.m.

Remotely Exploit :

Yes !

Source :

9119a7d8-5eab-497f-8521-727c672e3725
CISA Notification
CISA KEV (Known Exploited Vulnerabilities)

For the benefit of the cybersecurity community and network defenders—and to help every organization better manage vulnerabilities and keep pace with threat activity—CISA maintains the authoritative source of vulnerabilities that have been exploited in the wild.

Description :

Plex Media Server contains an improper neutralization of encoded URI schemes in a web page vulnerability that could allow an attacker to call other plugins' functions and supply their own parameters. This vulnerability can be chained with CVE-2026-96652, CVE-2026-96655, and CVE-2026-96656.

Required Action :

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.

Known Ransomware Campaign Use:

Unknown

Notes :

https://forums.plex.tv/t/important-security-update-for-plex-media-server-v1-43-2-and-earlier/942319 ; ; BOD 26-04: https://www.cisa.gov/news-events/directives/bod-26-04-prioritizing-security-updates-based-risk ; Forensics Triage Requirements: https://www.cisa.gov/news-events/directives/bod-26-04-implementation-guidance-prioritizing-security-updates-based-risk ; https://nvd.nist.gov/vuln/detail/CVE-2026-96654

Impact
Affected Products

The following products are affected by CVE-2026-96654 vulnerability. Even if cvefeed.io is aware of the exact versions of the products that are affected, the information is not represented in the table below.

ID Vendor Product Action
1 Plex media_server
: Total Affected Vendor : 1 | Products : 1
Scoring
CVSS Scores
The Common Vulnerability Scoring System is a standardized framework for assessing the severity of vulnerabilities in software and systems. We collect and displays CVSS scores from various sources for each CVE.
Score Version Severity Vector Exploitability Score Impact Score Source
CVSS 9119a7d8-5eab-497f-8521-727c672e3725
CVSS 134c704f-9b21-4f2e-91b3-4a467353bcc0
CVSS 3.1 MEDIUM MITRE-CVE
CVSS 3.1 MEDIUM 9119a7d8-5eab-497f-8521-727c672e3725
CVSS 4.0 MEDIUM 9119a7d8-5eab-497f-8521-727c672e3725
Solution
Update Plex Media Server to version 1.43.3.10861 or later to fix URL handling.
  • Update Plex Media Server to a patched version.
  • Verify the version is 1.43.3.10861 or newer.
  • Restrict access to the Plex Media Server.
References
References to Advisories, Solutions, and Tools

Here, you will find a curated list of external links that provide in-depth information, practical solutions, and valuable tools related to CVE-2026-96654.

URL Resource
https://forums.plex.tv/t/plex-media-server/30447/711 Release Notes
https://raw.githubusercontent.com/cisagov/CSAF/develop/csaf_files/IT/white/2026/va-26-266-01.json Third Party Advisory
https://www.cve.org/CVERecord?id=CVE-2026-96654 Third Party Advisory VDB Entry
https://zmain.info/blog/plex2shell Third Party Advisory
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-96654 US Government Resource
CWE - Common Weakness Enumeration

While CVE identifies specific instances of vulnerabilities, CWE categorizes the common flaws or weaknesses that can lead to vulnerabilities. CVE-2026-96654 is associated with the following CWEs:

Common Attack Pattern Enumeration and Classification (CAPEC)

Common Attack Pattern Enumeration and Classification (CAPEC) stores attack patterns, which are descriptions of the common attributes and approaches employed by adversaries to exploit the CVE-2026-96654 weaknesses.

We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).

Results are limited to the first 15 repositories due to potential performance issues.

The following list is the news that have been mention CVE-2026-96654 vulnerability anywhere in the article.

  • The Hacker News
CISA Orders Federal Agencies to Patch Exploited Plex2Shell, Siemens, and SiteGuard Flaws

The U.S. Cybersecurity and Infrastructure Security Agency (CISA) on Tuesday added four vulnerabilities to its Known Exploited Vulnerabilities (KEV) catalog, including four vulnerabilities impacting Pl ... Read more

Published Date: Oct 21, 2026 (1 week, 3 days ago)
  • security.nl
Plex-mediaservers gehackt via Plex2Shell RCE-kwetsbaarheden

Aanvallers maken actief misbruik van verschillende beveiligingslekken in Plex Media Server om kwetsbare servers te compromitteren. Plex publiceerde afgelopen september beveiligingsupdates voor de pro ... Read more

Published Date: Oct 20, 2026 (1 week, 4 days ago)
  • The Hacker News
Hackers Exploit Plex2Shell Flaws to Install Crypto Miners and Linux Proxy Backdoor

Threat actors have begun to exploit a chain of vulnerabilities in Plex Media Server to deploy cryptocurrency miners and reverse proxy software, a day after a proof-of-concept (PoC) went public. Accord ... Read more

Published Date: Oct 19, 2026 (1 week, 4 days ago)

Results are limited to the first 20 news articles due to potential performance issues.

The following table lists the changes that have been made to the CVE-2026-96654 vulnerability over time.

Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.

  • Modified Analysis by [email protected]

    Oct. 21, 2026

    Action Type Old Value New Value
    Changed CPE Configuration OR *cpe:2.3:a:plex:media_server:*:*:*:*:*:*:*:* versions up to (excluding) 1.43.0.10861 OR *cpe:2.3:a:plex:media_server:*:*:*:*:*:*:*:* versions up to (excluding) 1.43.3.10861
    Added Reference Type CISA-ADP: https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-96654 Types: US Government Resource
  • CVE Modified by 134c704f-9b21-4f2e-91b3-4a467353bcc0

    Oct. 21, 2026

    Action Type Old Value New Value
    Removed SSVC {'id': 'CVE-2026-96654', 'role': 'CISA Coordinator', 'options': [{'exploitation': 'active'}, {'automatable': 'yes'}, {'technicalImpact': 'partial'}], 'version': '2.0.3', 'timestamp': '2026-10-20T19:46:41.272234Z'}
    Added SSVC {'id': 'CVE-2026-96654', 'role': 'CISA Coordinator', 'options': [{'exploitation': 'active'}, {'automatable': 'yes'}, {'technicalImpact': 'partial'}], 'version': '2.0.3', 'timestamp': '2026-10-20T00:00:00+00:00'}
  • CVE CISA KEV Update by 9119a7d8-5eab-497f-8521-727c672e3725

    Oct. 20, 2026

    Action Type Old Value New Value
    Added Date Added 2026-10-20
    Added Due Date 2026-10-20
    Added Required Action 2026-10-20
    Added Vulnerability Name 2026-10-20
  • CVE Modified by 134c704f-9b21-4f2e-91b3-4a467353bcc0

    Oct. 20, 2026

    Action Type Old Value New Value
    Added Reference https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-96654
    Removed SSVC {'id': 'CVE-2026-96654', 'role': 'CISA Coordinator', 'options': [{'exploitation': 'none'}, {'automatable': 'yes'}, {'technicalImpact': 'partial'}], 'version': '2.0.3', 'timestamp': '2026-10-20T16:07:05.456372Z'}
    Added SSVC {'id': 'CVE-2026-96654', 'role': 'CISA Coordinator', 'options': [{'exploitation': 'active'}, {'automatable': 'yes'}, {'technicalImpact': 'partial'}], 'version': '2.0.3', 'timestamp': '2026-10-20T19:46:41.272234Z'}
  • CVE Modified by 134c704f-9b21-4f2e-91b3-4a467353bcc0

    Oct. 20, 2026

    Action Type Old Value New Value
    Removed SSVC {'id': 'CVE-2026-96654', 'role': 'CISA Coordinator', 'options': [{'exploitation': 'none'}, {'automatable': 'no'}, {'technicalImpact': 'partial'}], 'version': '2.0.3', 'timestamp': '2026-09-23T16:34:40.471558Z'}
    Added SSVC {'id': 'CVE-2026-96654', 'role': 'CISA Coordinator', 'options': [{'exploitation': 'none'}, {'automatable': 'yes'}, {'technicalImpact': 'partial'}], 'version': '2.0.3', 'timestamp': '2026-10-20T16:07:05.456372Z'}
  • CVE Modified by 9119a7d8-5eab-497f-8521-727c672e3725

    Oct. 20, 2026

    Action Type Old Value New Value
    Removed SSVC {'id': 'CVE-2026-96654', 'role': 'CISA Coordinator', 'options': [{'exploitation': 'none'}, {'automatable': 'no'}, {'technicalImpact': 'partial'}], 'version': '2.0.3', 'timestamp': '2026-09-14T18:22:58.142955Z'}
    Added SSVC {'id': 'CVE-2026-96654', 'role': 'CISA Coordinator', 'options': [{'exploitation': 'none'}, {'automatable': 'yes'}, {'technicalImpact': 'partial'}], 'version': '2.0.3', 'timestamp': '2026-10-20T15:58:41.367540Z'}
  • Initial Analysis by [email protected]

    Sep. 29, 2026

    Action Type Old Value New Value
    Added CPE Configuration OR *cpe:2.3:a:plex:media_server:*:*:*:*:*:*:*:* versions up to (excluding) 1.43.0.10861
    Added Reference Type Cybersecurity and Infrastructure Security Agency (CISA) U.S. Civilian Government: https://forums.plex.tv/t/plex-media-server/30447/711 Types: Release Notes
    Added Reference Type Cybersecurity and Infrastructure Security Agency (CISA) U.S. Civilian Government: https://raw.githubusercontent.com/cisagov/CSAF/develop/csaf_files/IT/white/2026/va-26-266-01.json Types: Third Party Advisory
    Added Reference Type Cybersecurity and Infrastructure Security Agency (CISA) U.S. Civilian Government: https://www.cve.org/CVERecord?id=CVE-2026-96654 Types: Third Party Advisory, VDB Entry
    Added Reference Type Cybersecurity and Infrastructure Security Agency (CISA) U.S. Civilian Government: https://zmain.info/blog/plex2shell Types: Third Party Advisory
  • New CVE Received by 9119a7d8-5eab-497f-8521-727c672e3725

    Sep. 23, 2026

    Action Type Old Value New Value
    Added Description 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.
    Added CVSS V4.0 AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
    Added CVSS V3.1 AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N
    Added CWE CWE-84
    Added Affected New affected value received. <a href="https://github.com/CVEProject/cvelistV5/blob/main/cves/2026/96xxx/CVE-2026-96654.json">CVE-2026-96654</a>
    Added Reference https://forums.plex.tv/t/plex-media-server/30447/711
    Added Reference https://raw.githubusercontent.com/cisagov/CSAF/develop/csaf_files/IT/white/2026/va-26-266-01.json
    Added Reference https://www.cve.org/CVERecord?id=CVE-2026-96654
    Added Reference https://zmain.info/blog/plex2shell
    Added SSVC {'id': 'CVE-2026-96654', 'role': 'CISA Coordinator', 'options': [{'exploitation': 'none'}, {'automatable': 'no'}, {'technicalImpact': 'partial'}], 'version': '2.0.3', 'timestamp': '2026-09-14T18:22:58.142955Z'}
  • CVE Modified by 134c704f-9b21-4f2e-91b3-4a467353bcc0

    Sep. 23, 2026

    Action Type Old Value New Value
    Added SSVC {'id': 'CVE-2026-96654', 'role': 'CISA Coordinator', 'options': [{'exploitation': 'none'}, {'automatable': 'no'}, {'technicalImpact': 'partial'}], 'version': '2.0.3', 'timestamp': '2026-09-23T16:34:40.471558Z'}
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days. Following chart shows the EPSS score history of the vulnerability.
CVSS
Vulnerability Scoring Details
Base CVSS Score: 6.9
Attack Vector
Attack Complexity
Attack Requirements
Privileges Required
User Interaction
VS Confidentiality
VS Integrity
VS Availability
SS Confidentiality
SS Integrity
SS Availability
Base CVSS Score: 6.5
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality Impact
Integrity Impact
Availability Impact