How widely exploitable is this vulnerability?

Exploitability depends on who can modify SEO fields and who visits the affected pages. In many deployments, content editors or lower-privileged users can edit SEO metadata, while higher-privileged users such as administrators routinely view those pages, making it relatively practical for an attacker with content-editing access to target more privileged accounts.

What level of access does an attacker need to exploit this issue?

The attacker generally needs the ability to create or modify content that controls the SEO Title, Meta Description, or related structured SEO data. This can come from a legitimate but low-privileged CMS account or a compromised contributor/editor account. They do not need direct server or database access—only control over the relevant content fields.

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

The safest fix is to apply strict, context-aware output encoding wherever user-supplied data is rendered. This means ensuring that SEO fields are HTML-encoded when placed in document titles, attribute-encoded within `<meta>` tags, and JSON-encoded inside JSON-LD blocks, using well-tested helper functions or template features that escape by default.

Severity:

HIGH RISK

(8.7)

Stored Cross-Site Scripting (CWE-79) in ApostropheCMS SEO Fields

CVE-2026-35569

Published:

Apr 15, 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:

Cross-Site Scripting (Stored XSS)

CWE:

CWE-79;CWE-116

Impact:

Arbitrary JavaScript execution in users' browsers with the privileges of their authenticated session

Severity:

HIGH RISK

(8.7)

CVSS Version:

3.1

Vulnerability Type

Category:

Cross-Site Scripting (Stored XSS)

CWE:

CWE-79;CWE-116

Impact:

Arbitrary JavaScript execution in users' browsers with the privileges of their authenticated session

Severity:

HIGH RISK

(8.7)

CVSS Version:

3.1

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Made with Love in San Francisco

355 Bryant St. San Francisco, CA 94107, USA

Ask AI for summary of CodeAnt

Stored Cross-Site Scripting (CWE-79) in ApostropheCMS SEO Fields

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

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