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CVE-2026-45381— Tautulli: Reflected XSS in `/search` endpoint

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 is a Python based monitoring and tracking tool for Plex Media Server. Prior to 2.17.2, the /search endpoint inserts its user-controlled query parameter into a JavaScript string in data/interfaces/default/search.html using manual escaping that handles

CVSS 5.1 · Medium EPSS 0.43% · P37

Affected Version Matrix 1

VendorProduct Version RangeStatus
Tautulli Tautulli < 2.17.2 affected
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I. Basic Information for CVE-2026-45381

Vulnerability Information

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Vulnerability Title
Tautulli: Reflected XSS in `/search` endpoint
Source: CVE Program / CVE List V5
Vulnerability Description
Tautulli is a Python based monitoring and tracking tool for Plex Media Server. Prior to 2.17.2, the /search endpoint inserts its user-controlled query parameter into a JavaScript string in data/interfaces/default/search.html using manual escaping that handles quotes and slashes but not backslashes. A backslash-quote sequence can terminate the string, so an unauthenticated attacker can send a crafted link that executes script in the Tautulli web context when an authenticated user follows it. This issue is fixed in version 2.17.2.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N
Source: CVE Program / CVE List V5
Vulnerability Type
在Web页面生成时对输入的转义处理不恰当(跨站脚本)
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
Tautulli Tautulli < 2.17.2 -

II. Public POCs for CVE-2026-45381

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III. Intelligence Information for CVE-2026-45381

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Patches & Fixes for CVE-2026-45381 (1)

Other References for CVE-2026-45381 (2)

Same Patch Batch · Tautulli · 2026-09-21 · 4 CVEs total

CVE-2026-52835 7.0 HIGH Tautulli: Path traversal / arbitrary file write via unsanitized upload filename in import_
CVE-2026-54915 5.4 MEDIUM Tautulli: Open redirect via whitespace bypass in /auth/redirect
CVE-2026-49995 4.8 MEDIUM Tautulli: Stored Cross-Site Scripting (XSS) in the newsletter

IV. Related Vulnerabilities

Same product: Tautulli
Same vendor: Tautulli
Same weakness: CWE-79

V. Comments for CVE-2026-45381

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