CVE-2026-96655

Plex Media Server arbitrary-host SSRF

At a glance

Severity: MEDIUM 5.3
Exploitation: Known exploited (CISA KEV) · added 2026-10-20
Exploited per ENISA since 2026-10-20
EPSS: EPSS 1.64 % · percentile 76 (2026-10-27)
State: PUBLISHED
Published: 2026-09-23
Updated: 2026-10-21
Assigner: cisa-cg
NVD status: Analyzed

Description

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.

Scores

Version	Score	Vector	Scored by
CVSS 3.1	MEDIUM 4.3	CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N	cisa-cg
CVSS 4.0	MEDIUM 5.3	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-cg
CVSS 4.0	MEDIUM 5.3	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/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	NVD · 9119a7d8-5eab-497f-8521-727c672e3725 (Secondary)
CVSS 3.1	MEDIUM 4.3	CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N	NVD · 9119a7d8-5eab-497f-8521-727c672e3725 (Secondary)

Weaknesses (CWE)

CWE-918

European references

ENISA EUVD · EUVD-2026-85369
GCVE · GCVE-0-2026-96655

Affected configurations (NVD CPE)

cpe:2.3:a:plex:media_server:*:*:*:*:*:*:*:* < 1.43.3.10861

Affected products

Product	Versions
Plex · Media Server	affected 0 < 1.43.3.10861 ; unaffected 1.43.3.10861

References

Sources

Source	Licence
CVE List (CVEProject cvelistV5)	CVE Program Terms of Use
CISA Known Exploited Vulnerabilities	CC0 1.0
EPSS (FIRST.org)	FIRST — attribution requested
ENISA EUVD	ENISA — reproduction authorised, source acknowledged
NVD (NIST) via fkie-cad/nvd-json-data-feeds	Public domain — this product uses data from the NVD API but is not endorsed or certified by the NVD