Unauthenticated Access Control Bypass in WordPress Photo Plugin

The Sunshine Photo Cart WordPress plugin before 3.6.12 does not perform access control checks in one of its AJAX actions, allowing unauthenticated users to retrieve the comments of images belonging to private, password-protected or otherwise access-restricted galleries.

Casky was already ahead

This CVE exploits attack patterns that Casky's 283matched 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 Sunshine Photo Cart WordPress plugin versions prior to 3.6.12 contain a critical access control vulnerability (CWE-862) that allows unauthenticated attackers to retrieve comments from images stored in private, password-protected, or otherwise restricted galleries. By exploiting an unprotected AJAX action, attackers can bypass WordPress's authentication and authorization mechanisms to access sensitive metadata and user comments that should only be visible to authorized users. This vulnerability affects any WordPress installation using the vulnerable plugin version, potentially exposing confidential information, private communications, and metadata about restricted content to the public internet.

Casky's 283 mapped security skills leverage Claude AI with extended reasoning to identify the attack patterns associated with TA0004 (Privilege Escalation) and TA0006 (Credential Access) techniques underlying this vulnerability. Practitioners using Casky would observe findings highlighting: (1) unprotected AJAX endpoint calls lacking nonce verification and capability checks, indicating privilege escalation through missing access controls; (2) suspicious cross-origin requests or direct parameter manipulation attempting to access restricted resource identifiers; and (3) patterns consistent with information gathering on private galleries and associated metadata. The platform's reasoning engine connects the missing authorization checks to both techniques, helping practitioners understand that attackers are leveraging improper access control (TA0004) to gain unauthorized information disclosure that could facilitate further credential access attempts (TA0006).

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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 →

283 Casky skills cover this attack pattern

These skills use Claude AI's reasoning model to surface findings in the same attack categories as CVE-2026-16561.

abusing-dpapi-for-credential-access

red teaming · high

Run

abusing-shadow-credentials-for-privesc

red teaming · high

Run

Access with Stolen Session Cookie

cryptography · low

Run

MITRE ATT&CK Techniques

TA0004 TA0006

Investigate the attack patterns behind CVE-2026-16561

Casky has 283 skills that investigate the attack patterns behind CVE-2026-16561. Run one and get CVSS-scored findings in 3 minutes.

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