CVE-2026-49995

Tautulli: Stored Cross-Site Scripting (XSS) in the newsletter

MEDIUM
4.8
CVSS Score
Published: September 21, 2026 at 07:13 PM UTC
Updated: September 22, 2026 at 02:17 PM UTC
1 product affected across 1 vendorTautulli

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Severity
MEDIUM4.8
Exploit prediction
EPSS 0.6%
SSVC
PoC

Description

Tautulli is a Python based monitoring and tracking tool for Plex Media Server. Prior to 2.17.2, the newsletter cron field stored in the newsletters table is inserted by data/interfaces/default/newsletter_config.html into a JavaScript string without safe JSON encoding. An administrator or caller with the Tautulli API key can store a crafted cron value, and an administrator who later opens the newsletter configuration modal passively triggers script execution in the Tautulli web context. The stored value persists in the database and can continue to execute after credential rotation until it is removed. This issue is fixed in version 2.17.2.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

v < 2.17.2
Affected range stops below 2.17.2, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet, and no fixed version or vendor advisory is recorded against it.

SSVC — Action Prioritization

SSVCPoCNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

4.8MEDIUMGitHub_M
Vector?

Quick Info

StatusDEFERRED
CWE
CWE-79

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