What’s Vulnerable › Vulnerabilities

CVE-2018-21031

• Severity: medium (CVSS 6.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 2.1% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2019-11-18 · updated 2026-06-17
• Weakness: CWE-522

Description

Tautulli versions 2.1.38 and below allows remote attackers to bypass intended access control in Plex Media Server because the X-Plex-Token is mishandled and can be retrieved from Tautulli. NOTE: Initially, this id was associated with Plex Media Server 1.18.2.2029-36236cc4c as the affected product and version. Further research indicated that Tautulli is the correct affected product.

Affected products

• Plex Media Server: 1.18.2.2029-36236cc4c

References

• https://forums.plex.tv/t/security-regarding-cve-2018-21031/493286
• https://twitter.com/GerardFuguet/status/1009937529573912576
• https://www.elladodelmal.com/2018/08/shodan-es-de-cine-hacking-tautulli-un.html
• https://www.exploit-db.com/docs/47790
• https://forums.plex.tv/t/security-regarding-cve-2018-21031/493286
• https://twitter.com/GerardFuguet/status/1009937529573912576
• https://www.elladodelmal.com/2018/08/shodan-es-de-cine-hacking-tautulli-un.html
• https://www.exploit-db.com/docs/47790

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