CVE-2026-96655: Plex Media Server Server-Side Request Forgery (SSRF) Vulnerability
Advisory generated from the CVE record, CISA, Exploit Observer and VEDAS: what it is, whether it is exploited, who is affected, and how to fix and detect it.
Generated by VEDAS. Scores as of 2026-11-01 19:19 UTC. Rebuilt every few hours from cve-scores, CISA KEV and vedas-signatures. How this works and its limits.
What it is
Plex Media Server before 1.43.3.10861 allows an authenticated user to request arbitrary internal or external addresses via the ‘/video/:/transcode/universal’ path parameter.
Description quoted from the CVE record (assigned by cisa-cg, published 2026-09-23).
Weakness: CWE-918 Server-Side Request Forgery (SSRF)
How it can be exploited
Exploitable over the network with low attack complexity with no special attack requirements needing low privileges and no user interaction. Impact: confidentiality low, integrity none, availability none. CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N
CISA assessment (SSVC): CISA has no evidence of exploitation. Automatable: no. Technical impact: partial.
- On CISA KEV since
- 2026-10-20
- US federal deadline
- 2026-11-03
- Ransomware use
- Not known
Public exploit evidence (Exploit Observer)
Also known as: EUVD-2026-85369, GHSA-9x88-w2p7-56vh
VEDAS cluster: VEDAS:BARLEYBRAVE
Exploit Observer links 3 pieces of public exploit code or detection modules that name this CVE or one of its aliases.
Exploit code and modules (3)
Code that names this CVE. A repository can be a working exploit, a scanner, a fake or malware; read it before running anything.
- Code repository: https://raw.githubusercontent.com/ARPSyndicate/vedas-signatures/main/suricata/2026/CVE-2026-96655.rules
- Code repository: https://raw.githubusercontent.com/ARPSyndicate/vedas-signatures/main/suricata/2026/CVE-2026-96655.rules
- Code repository: https://raw.githubusercontent.com/ARPSyndicate/vedas-signatures/main/suricata/2026/CVE-2026-96655.rules
Vulnerability databases and vendor advisories (4)
Catalogue entries, not exploit evidence.
- Vulnerability database or vendor advisory: https://euvd.enisa.europa.eu/enisa/EUVD-2026-85369
- Vulnerability database or vendor advisory: https://github.com/advisories/GHSA-9x88-w2p7-56vh
- Vulnerability database or vendor advisory: https://nvd.nist.gov/vuln/detail/CVE-2026-96655
- Vulnerability database or vendor advisory: https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-96655
95 more references returned by Exploit Observer did not name this CVE or an alias, so they are left out.
VEDAS data as of 2026-11-01T17:12 UTC; fetched 2026-11-02.
Live scores
- EPSS
- 0.016
some chance of attack soon - VEDAS
- 0.986
strong exploit evidence - On CISA KEV
- Yes, since 2026-10-20
- Detection rule
- Suricata
Thin horizontal line: the “likely” (EPSS 0.10) or “strong” (VEDAS 0.90) threshold. Shaded “no data” areas are periods when cve-scores did not publish. The vertical line is the day CISA added it to its exploited list.
Who is affected
| Product | Affected | Not affected |
|---|---|---|
| Plex Media Server | before 1.43.3.10861 | 1.43.3.10861 is not affected |
Version ranges exactly as the CVE record states them. “Before X” means X is the first fixed version.
Exploit Observer also maps it to: plex media_server.
How to fix it
Fixed versions stated in the CVE record: 1.43.3.10861.
CISA 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.
Vendor guidance:
- url (release-notes)
How to detect it
Suricata rules (network detection)
1 rule that alert on traffic matching this exploit: VEDAS CVE-2026-96655 Plex Media Server transcode universal SSRF. Add them to your Suricata rule set and reload.
Show the rules
alert http $EXTERNAL_NET any -> $HTTP_SERVERS $HTTP_PORTS (msg:"VEDAS CVE-2026-96655 Plex Media Server transcode universal SSRF"; flow:established,to_server; http.uri; content:"/video/:/transcode/universal"; nocase; fast_pattern; pcre:"/(169\.254\.169\.254|metadata\.google\.internal|127\.0\.0\.1|localhost|0\.0\.0\.0|\[::1\]|https?:\/\/|%68%74%74%70)/i"; classtype:web-application-attack; reference:cve,CVE-2026-96655; reference:url,https://www.exploit.observer/?keyword=CVE-2026-96655&match=exact; reference:url,https://subdomain.center/?engine=ammonites&keyword=plex&match=exact; sid:1093607; rev:1;)
CVE-2026-96655.rules on GitHub
Advisories on this CVE
- Plex2Shell, Plex Media Server four-CVE chain (CVE-2026-96652 / -96654 / -96655 / -96656) (20 Oct 2026)
References
Vendor advisories and patches
- url (release-notes)
Exploits and technical analysis
Government sources
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-96655 (government-resource)
Other references
- url (vdb-entry)
Other databases
Where this comes from
This advisory is generated automatically by VEDAS from: CVE.org record, CISA KEV, cve-scores (EPSS and VEDAS), Exploit Observer, vedas-signatures. Text in quotes is reproduced from the source; everything else is a fixed template filled with source fields. Nothing here is written by a language model. Check the vendor advisory before acting, and read how VEDAS and Exploit Observer work, and their limits.