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TI-2026-32028 Aliases CVE-2026-43984

Tautulli has stored XSS in logFile via guest-controlled log_js_errors input

Priority HIGH 74CWE-79Published · Updated

Key facts

Attack vector
Network
Privileges required
Low
User interaction
Required
Attack complexity
Low
Impact type
Cross-site scripting
Confidentiality · integrity · availability
High · High · Low
Fix status
Fixed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-79.

Summary

Tautulli is a Python based monitoring and tracking tool for Plex Media Server. Versions prior to 2.17.1 expose `log_js_errors` to any authenticated user, including guest users when guest access is enabled. The endpoint writes attacker-controlled strings directly into the main application log. The administrator-only `logFile` view then reads that log file and embeds it into an HTML response without escaping. This creates a stored cross-site scripting condition where a low-privilege guest can inject HTML or JavaScript into the log file and have it execute in an administrator's browser when the log viewer is opened. Version 2.17.1 patches the issue.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.00207 10th percentileScored 2026-11-07
Fix Fixed Tautulli (Tautulli): 2.17.1

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
Poc
Automatable
No
Technical impact
Total

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 2.17.12.17.1Patch availableCNA
  • Tautulli VendorTautulli Affected before 2.17.1 Fixed in 2.17.1 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 2.17.1

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-43984

References

Other 2

  • 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-2026-32029 Taultulli has CSRF in /configUpdate via missing anti-CSRF and method restriction that allows admin credential takeover CVSS 3.1HIGH 8.8
  • TI-2025-36418 Tautulli vulnerable to Unauthenticated Path Traversal in `/image` endpoint CVSS 3.1HIGH 8.6
See all 19 →

Sources

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