How broadly exploitable is this vulnerability in Kirby sites?

Exploitability depends heavily on how a Kirby site or plugin uses the XML utilities. Sites that never generate XML from user-controlled data, or that do not pass generated XML into schema-aware consumers, are effectively not exposed. The risk is highest where untrusted input is transformed into XML and then used by another system to drive logic or configuration.

What level of access does an attacker need?

An attacker needs the ability to influence or control the data that is fed into `Xml::value()`, `Xml::tag()`, `Xml::create()` or `Data::encode(..., 'xml')`. This can occur through typical application inputs, such as form submissions, editable content fields in the CMS, API parameters, or plugin settings, depending on how the site is implemented.

What is the safest general fix pattern for developers?

The safest pattern is to enforce strict, unconditional XML escaping for all untrusted values and to only treat content as CDATA after verifying that the *entire* value is composed of one or more valid CDATA sections with no extra markup. In many cases, removing special CDATA passthrough logic and relying solely on a robust standard encoder simplifies the model and prevents similar bugs.

Severity:

HIGH RISK

(7.5)

Improper XML CDATA Handling (CWE-91) in Kirby Xml::value() Utility Methods

CVE-2026-32870

Published:

Apr 23, 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-74;CWE-89

HIGH RISK

HIGH

(7.3)

SQL Injection via Unsanitized ID Parameter (CWE-89) in Pharmacy Sales and Inventory System /ajax.php

Database Compromise and Data Integrity Loss

April 27, 2026

CWE-863

HIGH RISK

HIGH

(8.5)

Incorrect Authorization (CWE-863) in OpenClaw chat.send Session Management

Privilege Escalation and Unauthorized Session Control

April 27, 2026

Vulnerability Type

Category:

XML Injection

CWE:

CWE-91

Impact:

XML Schema Manipulation / Data Injection into Downstream XML Consumers

Severity:

HIGH RISK

(7.5)

CVSS Version:

3.1

Vulnerability Type

Category:

XML Injection

CWE:

CWE-91

Impact:

XML Schema Manipulation / Data Injection into Downstream XML Consumers

Severity:

HIGH RISK

(7.5)

CVSS Version:

3.1

Catch This CVE While Code Is Being Written

Detect vulnerable code directly in pull requests, so CVEs are fixed before merge.

Get Started

Ship clean & secure code faster

START 14 DAYS FREE TRIAL

BOOK A DEMO

Made with Love in San Francisco

355 Bryant St. San Francisco, CA 94107, USA

Ask AI for summary of CodeAnt

Made with Love in San Francisco

355 Bryant St. San Francisco, CA 94107, USA

Ask AI for summary of CodeAnt

Made with Love in San Francisco

355 Bryant St. San Francisco, CA 94107, USA

Ask AI for summary of CodeAnt

Improper XML CDATA Handling (CWE-91) in Kirby Xml::value() Utility Methods

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)

SQL Injection via Unsanitized ID Parameter (CWE-89) in Pharmacy Sales and Inventory System /ajax.php

HIGH RISK

HIGH

(8.5)

Incorrect Authorization (CWE-863) in OpenClaw chat.send Session Management

Vulnerability Type

Vulnerability Type

Vulnerability Type

Catch This CVE While Code Is Being Written

Ship clean & secure code faster

Product

Pricing

Company

Legal

Developers

Compare

Product

Pricing

Company

Legal

Developers

Compare

Product

Pricing

Company

Legal

Developers

Compare