WordPress Database Backup Plugin Authorization Bypass

The Database Backup for WordPress plugin for WordPress is vulnerable to unauthorized database export in all versions up to, and including, 2.5.2. This is due to the plugin not properly enforcing the return value of its authorization check. This makes it possible for unauthenticated attackers to export database tables, leading to Sensitive Information Exposure. Note: This vulnerability is only exploitable in WordPress Multisite environments where the deprecated is_site_admin() function exists.

Casky was already ahead

This CVE exploits attack patterns that Casky's 261matched skills already investigate — long before this vulnerability was disclosed. Claude's reasoning model maps these techniques to MITRE ATT&CK, so practitioners who ran these skills have already seen the threat behaviour in their findings.

Analysis

The Database Backup for WordPress plugin contains a critical authorization bypass vulnerability (CVE-2026-4029) that allows unauthenticated attackers to export entire database tables in WordPress Multisite environments. The vulnerability stems from improper enforcement of authorization checks, meaning the plugin performs authentication validation but fails to act on the results, leaving sensitive data exposed. This affects all versions up to 2.5.2 and is particularly dangerous because database exports can contain user credentials, private posts, configuration data, and other sensitive information. Organizations running WordPress Multisite installations with this plugin are at immediate risk of information disclosure that could facilitate secondary attacks.

Casky.ai's 261 mapped security skills leverage Claude's extended reasoning to detect the attack patterns associated with this vulnerability across two critical MITRE ATT&CK tactics: TA0004 (Privilege Escalation) and TA0006 (Credential Access). Practitioners using Casky would identify suspicious patterns including unauthenticated HTTP requests to database export endpoints, anomalous database query patterns targeting sensitive tables, and authorization check bypasses in plugin logs. The platform's skills would correlate indicators such as missing or improperly validated capability checks (CWE-862: Missing Authorization), access to administrative functions without proper credentials, and exported database files containing PII or authentication tokens. Security teams would receive findings showing the specific attack chain—unauthenticated request → failed authorization validation → successful data exfiltration—enabling them to prioritize remediation and implement compensating controls like multisite environment segmentation.

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Casky Risk Score

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EPSS Probability

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Shodan Exposure

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GreyNoise Signal

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Composite risk scoring from EPSS, CISA KEV, Shodan, and GreyNoise — 21 security APIs correlated into a single Casky Risk Score. Coming in Casky Pro. Join early access →

261 Casky skills cover this attack pattern

These skills use Claude AI's reasoning model to surface findings in the same attack categories as CVE-2026-4029.

analyzing-cloud-storage-access-patterns

cloud security · low

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analyzing-kubernetes-audit-logs

container security · low

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analyzing-malicious-url-with-urlscan

phishing defense · medium

Run

MITRE ATT&CK Techniques

TA0004 TA0006

Investigate the attack patterns behind CVE-2026-4029

Casky has 261 skills that investigate the attack patterns behind CVE-2026-4029. Run one and get CVSS-scored findings in 3 minutes.

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