# CVE-2026-110936: Plex Media Server SSRF via /player/timeline

Source: https://junglewise.ai/threats/cve-2026-96652-plex-media-server-before-1-43-3-10861-allows-ssrf-via-player  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-09-23. Updated: 2026-09-26  
License: CC BY 4.0 with a link back

CVE-2026-110936 · Severity: critical · CVSS 4.3 · Exploited in the wild · Published 2026-09-23

Plex Media Server, which streams media content to users over networks, contains a Server-Side Request Forgery (SSRF) vulnerability in its timeline player endpoint. An attacker with knowledge of a Plex token can force the server to make HTTP POST requests to arbitrary destinations by manipulating the protocol parameter, potentially leading to data theft, internal network access, or credential exposure.

Technologies: [Plex Media Server](https://junglewise.ai/threats/technologies/media-server). Vendors: [Plex](https://junglewise.ai/threats/vendors/plex).

## Quick answers

**Is CVE-2026-110936 exploited in the wild?** Yes. CVE-2026-110936 is known to be exploited in the wild, first recorded on 20 October 2026. Treat it as urgent.

**How severe is CVE-2026-110936?** Critical severity, with a CVSS score of 4.3, published 23 September 2026.

**Which products and versions are affected?** Plex Media Server before 1.43.3.10861.

**Is there a fix for CVE-2026-110936?** A patch was published on 2026-09-23: Fixed in version 1.43.3.10861 Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

**How is CVE-2026-110936 attacked?** It is attacked over the network, in a hosted service.

**Am I affected by CVE-2026-110936?** Check whether you run Plex Media Server at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## Technical details

The /player/timeline endpoint accepts a protocol parameter that is not properly validated, allowing an attacker to inject arbitrary URLs. The vulnerability requires any valid X-Plex-Token (which may be obtained through various means or shared tokens), and can be exploited over the network to force the Plex server to make outbound POST requests to attacker-controlled or internal network destinations, enabling SSRF attacks.

## Affected products

- Plex Media Server before 1.43.3.10861

## Identifiers

- CVE-2026-110936
- CVE-2026-96655
- CVE-2026-96656
- CVE-2026-96654
- CVE-2026-96652
- CVE-2026-106931

## Timeline

- 2026-09-23: disclosed
- 2026-09-23: patched: Fixed in version 1.43.3.10861

## References

- [https://forums.plex.tv/t/plex-media-server/30447/711](https://forums.plex.tv/t/plex-media-server/30447/711)
- [https://raw.githubusercontent.com/cisagov/CSAF/develop/csaf_files/IT/white/2026/va-26-266-01.json](https://raw.githubusercontent.com/cisagov/CSAF/develop/csaf_files/IT/white/2026/va-26-266-01.json)

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