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CVE-2026-52835— Tautulli: Path traversal / arbitrary file write via unsanitized upload filename in import_config and import_database

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 import_config handler and the database_file branch of import_database in plexpy/webserve.py join the attacker-controlled config_file.filename or database_file.f

CVSS 7.0 · High EPSS 0.50% · P42

Affected Version Matrix 1

VendorProduct Version RangeStatus
Tautulli Tautulli < 2.17.2 affected
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I. Basic Information for CVE-2026-52835

Vulnerability Information

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Vulnerability Title
Tautulli: Path traversal / arbitrary file write via unsanitized upload filename in import_config and import_database
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 import_config handler and the database_file branch of import_database in plexpy/webserve.py join the attacker-controlled config_file.filename or database_file.filename directly to CACHE_DIR without basename reduction or a containment check. An administrator or caller with the instance API key can submit a multipart filename containing parent-directory segments, causing the upload to be created or overwritten outside CACHE_DIR before file-content validation runs. The write is limited to paths permitted to the Tautulli process, but it can enable configuration tampering, service disruption, or code execution. 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:H/UI:N/VC:N/VI:H/VA:H/SC:N/SI:N/SA:N
Source: CVE Program / CVE List V5
Vulnerability Type
对路径名的限制不恰当(路径遍历)
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
Tautulli Tautulli < 2.17.2 -

II. Public POCs for CVE-2026-52835

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III. Intelligence Information for CVE-2026-52835

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Patches & Fixes for CVE-2026-52835 (1)

Other References for CVE-2026-52835 (2)

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

CVE-2026-54915 5.4 MEDIUM Tautulli: Open redirect via whitespace bypass in /auth/redirect
CVE-2026-45381 5.1 MEDIUM Tautulli: Reflected XSS in `/search` endpoint
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-22

V. Comments for CVE-2026-52835

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