Is this vulnerability remotely exploitable over the network?

Yes, in typical deployments it can be exploited remotely by any user who can interact with the changedetection.io interface or API and supply XPath filters, subject to whatever authentication or access controls protect that functionality.

Does an attacker need privileged access to exploit this issue?

The attacker generally needs the ability to create or modify watches and specify `include_filters`. In many setups this may correspond to standard authenticated user access rather than administrative privileges, so the practical requirement is often low to moderate.

What is the safest general fix pattern for developers?

The strongest fix is to avoid evaluating arbitrary user-defined XPath and instead expose a constrained, structured filtering mechanism. If XPath must be supported, enforce an allow-listed subset of the language that excludes I/O and other side-effectful functions, and configure the XPath engine to run in a restricted profile wherever possible.

Severity:

HIGH RISK

(7.5)

XPath Function Abuse (CWE-94) in changedetection.io Content Filters

CVE-2026-29039

Published:

Mar 6, 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

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Privilege Escalation via Bypassed Access Control

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Vulnerability Type

Category:

Code Injection / Expression Injection

CWE:

CWE-94

Impact:

Arbitrary File Read via XPath Expression Injection

Severity:

HIGH RISK

(7.5)

CVSS Version:

3.1

Vulnerability Type

Category:

Code Injection / Expression Injection

CWE:

CWE-94

Impact:

Arbitrary File Read via XPath Expression Injection

Severity:

HIGH RISK

(7.5)

CVSS Version:

3.1

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XPath Function Abuse (CWE-94) in changedetection.io Content Filters

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

(8.6)

Server-Side Request Forgery (CWE-918) in OpenClaw Zalo Plugin sendPhoto

HIGH RISK

HIGH

(8.8)

Authorization Bypass (CWE-863) in OpenClaw Matrix Room Control Commands

Vulnerability Type

Vulnerability Type

Vulnerability Type

Catch This CVE While Code Is Being Written

Ship clean & secure code faster

Ship clean & secure code faster

Ship clean & secure code faster

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