Is this vulnerability remotely exploitable?

Yes. If Tautulli is accessible over the network, an attacker can exploit the vulnerable endpoint remotely by sending crafted HTTP requests, provided they can reach the `/newsletter/image/images` path.

Does an attacker need to be authenticated to exploit this issue?

No. The vulnerability affects an endpoint that can be invoked without prior authentication, meaning any network-accessible instance is potentially exposed.

What is the safest general fix pattern for this type of bug?

The safest approach is to enforce strict directory confinement: resolve the requested path to its canonical form, ensure it resides within an allowed base directory, and reject any request that attempts to escape that boundary or that does not match a whitelist of expected resources.

Severity:

HIGH RISK

(7.5)

Path Traversal (CWE-23) in Tautulli /newsletter/image/images Endpoint

CVE-2026-31831

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:

Path Traversal

CWE:

CWE-23

Impact:

Arbitrary File Read

Severity:

HIGH RISK

(7.5)

CVSS Version:

3.1

Vulnerability Type

Category:

Path Traversal

CWE:

CWE-23

Impact:

Arbitrary File Read

Severity:

HIGH RISK

(7.5)

CVSS Version:

3.1

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Path Traversal (CWE-23) in Tautulli /newsletter/image/images Endpoint

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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