Is this vulnerability remotely exploitable?

Yes. An attacker can host or deliver a crafted URL pointing to the vulnerable JSONP endpoint. When a victim with an active Tautulli session visits that URL, the attacker's JavaScript executes in the Tautulli origin.

Does exploitation require authentication or local access?

The attacker does not need direct access to Tautulli, but the victim's browser must have a valid session or applicable authorization to Tautulli for sensitive impacts like API key theft. Without a valid session, script execution may still occur but will yield limited or no sensitive data.

What is the safest general fix pattern?

The most robust fix is to deprecate JSONP endpoints in favor of standard JSON APIs with CORS and to ensure all user-controlled input is strictly validated and contextually encoded before being emitted into any script context.

Severity:

CRITICAL RISK

(9.1)

Reflected Cross-Site Scripting (CWE-79) via JSONP Callback in Tautulli API

CVE-2026-32275

Published:

Mar 30, 2026

Status:

Analyzed

Summary

Affected Context

Exploit Preconditions

Why This Happens

Potential Impact

General Mitigation Guidance

How Teams Detect Issues Like This

Frequently Asked Questions

Source

NDV

Recent Vulnerabilities

CWE-77;CWE-78

HIGH RISK

HIGH

(7.3)

OS Command Injection (CWE-78) in Totolink A7100RU setGameSpeedCfg CGI Handler

Remote Code Execution on the Router

April 6, 2026

CWE-77;CWE-78

HIGH RISK

HIGH

(7.3)

OS Command Injection (CWE-78) in Totolink A7100RU setFirewallType Handler

Remote Code Execution on Router Firmware

April 6, 2026

Vulnerability Type

Category:

Cross-Site Scripting (XSS)

CWE:

CWE-79

Impact:

Client-Side Code Execution and API Key Theft

Severity:

CRITICAL RISK

(9.1)

CVSS Version:

3.1

Vulnerability Type

Category:

Cross-Site Scripting (XSS)

CWE:

CWE-79

Impact:

Client-Side Code Execution and API Key Theft

Severity:

CRITICAL RISK

(9.1)

CVSS Version:

3.1

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Ask AI for summary of CodeAnt

Reflected Cross-Site Scripting (CWE-79) via JSONP Callback in Tautulli API

Summary

Affected Context

Exploit Preconditions

Why This Happens

Potential Impact

General Mitigation Guidance

How Teams Detect Issues Like This

Frequently Asked Questions

Source

Recent Vulnerabilities

HIGH RISK

HIGH

(7.3)

OS Command Injection (CWE-78) in Totolink A7100RU setGameSpeedCfg CGI Handler

HIGH RISK

HIGH

(7.3)

OS Command Injection (CWE-78) in Totolink A7100RU setFirewallType Handler

Vulnerability Type

Vulnerability Type

Vulnerability Type

Catch This CVE While Code Is Being Written

Ship clean & secure code faster

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