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CVE-2026-31804— Tautulli: Unauthenticated pms_image_proxy endpoint proxies arbitrary HTTP requests through the Plex Media Server

Quick assessment

Affected
Tautulli Tautulli
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Tautulli是Tautulli开源的一款用于监控Plex Media Server（媒体服务器）的应用程序。 Tautulli 2.17.0之前版本存在代码问题漏洞，该漏洞源于/pms_image_proxy端点未对img参数进行充分验证和限制，可能导致服务器端请求伪造攻击。

CVSS 4.0 · Medium EPSS 0.38% · P30

Possible ATT&CK Techniques 1 AI

T1105 · Ingress Tool Transfer
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I. Basic Information for CVE-2026-31804

Vulnerability Information
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Vulnerability Title
Tautulli: Unauthenticated pms_image_proxy endpoint proxies arbitrary HTTP requests through the Plex Media Server
Source: CVE Program / CVE List V5
Vulnerability Description
Tautulli is a Python based monitoring and tracking tool for Plex Media Server. Prior to version 2.17.0, the /pms_image_proxy endpoint accepts a user-supplied img parameter and forwards it to Plex Media Server's /photo/:/ transcode transcoder without authentication and without restricting the scheme or host. The endpoint is intentionally excluded from all authentication checks in webstart.py, any value of img beginning with http is passed directly to Plex, this causes the Plex Media Server process, which typically runs on the same host or internal network as Tautulli, with access to RFC-1918 address space, to issue an outbound HTTP request to any attacker-specified URL. This issue has been patched in version 2.17.0.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:L/I:N/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
服务端请求伪造(SSRF)
Source: CVE Program / CVE List V5
Vulnerability Title
Tautulli 代码问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Tautulli是Tautulli开源的一款用于监控Plex Media Server（媒体服务器）的应用程序。 Tautulli 2.17.0之前版本存在代码问题漏洞，该漏洞源于/pms_image_proxy端点未对img参数进行充分验证和限制，可能导致服务器端请求伪造攻击。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
Tautulli Tautulli < 2.17.0 -

II. Public POCs for CVE-2026-31804

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III. Intelligence Information for CVE-2026-31804

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Vendor Advisories for CVE-2026-31804 (1)

Vendor Pages for CVE-2026-31804 (1)

Same Patch Batch · Tautulli · 2026-03-30 · 5 CVEs total

CVE-2026-31799 4.9 MEDIUM Tautulli: SQL Injection in get_home_stats API endpoint via unsanitised filter parameters
CVE-2026-32275 Tautulli: Unsanitized JSONP callback parameter allows cross-origin script injection and AP
CVE-2026-31831 Tautulli: Unauthenticated Path Traversal in `/newsletter/image/images` endpoint
CVE-2026-28505 Tautulli: RCE via eval() sandbox bypass using lambda nested scope to escape co_names white

IV. Related Vulnerabilities

Same product: Tautulli
Same vendor: Tautulli
Same weakness: CWE-918

V. Comments for CVE-2026-31804

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