How severe is CVE-2026-96651?

CVE-2026-96651 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.

Is CVE-2026-96651 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (42nd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-96651?

CVE-2026-96651 affects Plex Media Server. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-96651?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2026-96651 published?

CVE-2026-96651 was published on 2026-09-23 and last updated on 2026-09-29.

CVE-2026-96651

CVE-2026-96651 is a medium-severity vulnerability in Plex Media Server with a CVSS 3.x base score of 6.5. 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-22.

Key facts

Severity: Medium (CVSS 3.x base score 6.5)
CVSS v4: 7.1
EPSS exploit prediction: 1% (42nd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-22
Affected product: Plex Media Server
Published: 2026-09-23
Last modified: 2026-09-29

Description

Plex Media Server before 1.43.3.10861 builds a file path from the url parameter without checking it for ../ sequences, allowing path traversal via '/system/agents/media/get'. A remote attacker with a valid session token could read any file that the target user can access. This access includes the PlexOnlineToken, which grants control of the Plex account and server. A LAN-adjacent attacker with a client-supplied X-Forwarded-For header could exploit the same issue.

Frequently asked questions

What is CVE-2026-96651?: Plex Media Server before 1.43.3.10861 builds a file path from the url parameter without checking it for ../ sequences, allowing path traversal via '/system/agents/media/get'. A remote attacker with a valid session token could read any file that the target user can access. This access includes the PlexOnlineToken, which grants control of the Plex account and server. A LAN-adjacent attacker with a client-supplied X-Forwarded-For header could exploit the same issue.
How severe is CVE-2026-96651?: CVE-2026-96651 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.
Is CVE-2026-96651 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (42nd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-96651?: CVE-2026-96651 affects Plex Media Server. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-96651?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2026-96651 published?: CVE-2026-96651 was published on 2026-09-23 and last updated on 2026-09-29.

References

Affected products (1)

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

More vulnerabilities in Plex Media Server

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CVE-2025-69414 — High (CVSS 8.5): Plex Media Server (PMS) through 1.42.2.10156 allows retrieval of a permanent access token via a /myplex/account call…
CVE-2020-5740 — High (CVSS 7.8): Improper Input Validation in Plex Media Server on Windows allows a local, unauthenticated attacker to execute arbitrary…
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