How severe is CVE-2014-9304?

CVE-2014-9304 has a CVSS 2.0 base score of 7.5, rated high severity.

Is CVE-2014-9304 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 8% (94th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2014-9304?

CVE-2014-9304 affects Plex Media Server. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2014-9304?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2014-9304 published?

CVE-2014-9304 was published on 2014-12-07 and last updated on 2026-06-17.

CVE-2014-9304

CVE-2014-9304 is a high-severity vulnerability in Plex Media Server with a CVSS 2.0 base score of 7.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-264.

Key facts

Severity: High (CVSS 2.0 base score 7.5)
EPSS exploit prediction: 8% (94th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-264
Affected product: Plex Media Server
Published: 2014-12-07
Last modified: 2026-06-17

Description

Plex Media Server before 0.9.9.3 allows remote attackers to bypass the web server whitelist, conduct SSRF attacks, and execute arbitrary administrative actions via multiple crafted X-Plex-Url headers to system/proxy, which are inconsistently processed by the request handler in the backend web server.

Frequently asked questions

What is CVE-2014-9304?: Plex Media Server before 0.9.9.3 allows remote attackers to bypass the web server whitelist, conduct SSRF attacks, and execute arbitrary administrative actions via multiple crafted X-Plex-Url headers to system/proxy, which are inconsistently processed by the request handler in the backend web server.
How severe is CVE-2014-9304?: CVE-2014-9304 has a CVSS 2.0 base score of 7.5, rated high severity.
Is CVE-2014-9304 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 8% (94th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2014-9304?: CVE-2014-9304 affects Plex Media Server. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2014-9304?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2014-9304 published?: CVE-2014-9304 was published on 2014-12-07 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:plex:media_server:*:*:*:*:*:*:*:*

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