CVE-2026-96655
Plex Media Server Server-Side Request Forgery (SSRF) Vulnerability
Plex Media ServerApplications & CMS
CVSS
4.3MediumExploit odds (EPSS)0.46%Chance of exploitation activity in the next 30 days, higher than 38% of CVEs. Scored 23 Oct 2026FIRST EPSS
CISA required actionApply 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. CISA KEV
What fixes it
- 1.43.3.10861Media ServerCVE List
A fixed version on one release line is not the upgrade target for every line. Check your exact version and any vendor backports.
Timeline
- 23 Sep 2026, 16:06 UTCPublishedCVE List
- 20 Oct 2026, 12:00 UTCFirst reported exploitedCISA advisories
- 20 Oct 2026Added to CISA KEVCISA KEV
Vendor and government advisories 1
Vendors that say their products are affected, and agencies that issued alerts. Check each for the fixed release of the product you run.
Reports 4
2 outlets report exploitation. Reports are not confirmation; each links to its source.
- @aiuto-ch.bsky.social: CISA KEV | CVE-2026-96655 | Plex / Media Server CISA lists this vulnerability as exploited in the wild. Check affected products and vendor guidance. Source: CISA KEV Full analysis:Bluesky: exploited in the wild, 22 Oct 2026Exploitation reported
- @ninjaintelgroup.bsky.social: 🚨 NEW on CISA KEV — exploited in the wild Plex Media Server: Plex Media Server Server-Side Request Forgery (SSRF) Vulnerability CVE-2026-96655 · patch by 2026-11-03 🔗 https://ninjaBluesky: exploited in the wild, 20 Oct 2026Exploitation reported
- @aipostdaily.bsky.social: CISA added CVE-2026-96655 to its Known Exploited Vulnerabilities list (2026-10-20). Plex Media Server Server-Side Request Forgery (SSRF) EPSS today: 0.002 (no score 30 days earlierBluesky: exploited in the wild, 20 Oct 2026Exploitation reported
- CISA Adds Six Known Exploited Vulnerabilities to CatalogCISA advisories, 20 Oct 2026Exploitation reported
Description
Plex Media Server contains a server-side request forgery (SSRF) vulnerability that could allow an authenticated user to request arbitrary internal or external addresses via the '/video/:/transcode/universal' path parameter. This vulnerability can be chained with CVE-2026-96652, CVE-2026-96654, and CVE-2026-96656.
Text from CVE List
Affected versions 2
- Media Serveraffected: all versions before 1.43.3.10861CVE List
- Media Serverunaffected: 1.43.3.10861CVE List
References 7
- forums.plex.tv/t/important-security-update-for-plex-media-server-v1-43-2-and-earlier/942319Advisoryvia CISA KEV
- raw.githubusercontent.com/cisagov/CSAF/develop/csaf_files/IT/white/2026/va-26-266-01.jsonAdvisoryvia CVE List
- zmain.info/blog/plex2shellAdvisoryvia CVE List
- nvd.nist.gov/vuln/detail/CVE-2026-96655Referencevia CISA KEV
- forums.plex.tv/t/plex-media-server/30447/711Referencevia CVE List
- cve.org/CVERecord?id=CVE-2026-96655Referencevia CVE List
- cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-96655Referencevia CVE List