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TI-2026-37943 Aliases CVE-2026-52835

Tautulli: Path traversal / arbitrary file write via unsanitized upload filename in import_config and import_database

Priority MEDIUM 64CWE-22Published · Updated

Key facts

Attack vector
Network
Privileges required
High
User interaction
None
Attack complexity
Low
Attack requirements
None
Impact type
Code execution
Confidentiality · integrity · availability
None · High · High
Fix status
Fixed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-434.

Summary

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.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.00591 48th percentileScored 2026-11-07
Fix Fixed Tautulli (Tautulli): 2.17.2

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
Poc
Automatable
No
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
TautulliTautullibefore 2.17.22.17.2Patch availableCNA
  • Tautulli VendorTautulli Affected before 2.17.2 Fixed in 2.17.2 Patch available CNA

CPE names Threatist (inferred) · 1

Inferred from how NVD named this product before; not given by a source.

CPEVersionsRoleVendor
cpe:2.3:a:tautulli:tautulli:*:*:*:*:*:*:*:*——Tautulli
  • cpe:2.3:a:tautulli:tautulli:*:*:*:*:*:*:*:* Versions — — ·Tautulli

Remediation

  • Fix · CNA Tautulli (Tautulli) Fixed in 2.17.2

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-52835

References

Other 3

  • TI-2026-29704 Tautulli Vulnerable to Unauthenticated/Authenticated Remote Code Execution via Newsletter Custom Template Directory CVSS 4.0HIGH 8.9
  • TI-2026-24384 Tautulli: Unauthenticated Path Traversal in `/newsletter/image/images` endpoint CVSS 4.0HIGH 8.7
  • TI-2026-32030 Tautulli vulnerable to unauthenticated SSRF in /image/<hash> via attacker-seeded image hash replay CVSS 3.1CRITICAL 9.9
  • TI-2025-36419 Tautulli vulnerable to Unauthenticated Path Traversal in `real_pms_image_proxy` CVSS 3.1HIGH 8.6
  • TI-2026-32028 Tautulli has stored XSS in logFile via guest-controlled log_js_errors input CVSS 3.1HIGH 8.9
  • TI-2026-32029 Taultulli has CSRF in /configUpdate via missing anti-CSRF and method restriction that allows admin credential takeover CVSS 3.1HIGH 8.8
See all 19 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences