What is CVE-2020-5742?

CVE-2020-5742 is a high-severity vulnerability in Plex Media Server. CVSS score: 8.8/10. Published 2020-06-15.

How severe is CVE-2020-5742?

High severity. CVSS v3 base score is 8.8 out of 10.

Vulnerability in Plex Media Server

CVE-2020-5742

Improper Access Control in Plex Media Server prior to June 15, 2020 allows any origin to execute cross-origin application requests.

Published 2020-06-15 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.014 (71.6th percentile), scored 2026-09-24.

Low probability of exploitation in the next 30 days, but still tracked. 72nd percentile — 71.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.014 · newest: 0.014 · change: 0.000

Affected products

Plex Media Server
Plex Media Server — versions Prior to June 15, 2020

References

www.tenable.com/security/research/tra-2020-35 (Exploit, Third Party Advisory)

Frequently asked questions

What is CVE-2020-5742?: CVE-2020-5742 is a high-severity vulnerability in Plex Media Server. CVSS score: 8.8/10. Published 2020-06-15.
How severe is CVE-2020-5742?: High severity. CVSS v3 base score is 8.8 out of 10.