Arbitrary Code Execution in Five Star Business Profile Editor

Editor Arbitrary Code Execution in Five Star Business Profile and Schema <= 2.3.19 versions.

Casky was already ahead

This CVE exploits attack patterns that Casky's 322matched 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

CVE-2026-27436 represents a critical arbitrary code execution vulnerability affecting Five Star Business Profile and Schema plugin versions 2.3.19 and earlier. This CWE-94 (Improper Control of Generation of Code) flaw allows attackers to execute arbitrary code through the editor interface, potentially compromising WordPress installations and any data they manage. Organizations relying on this plugin for business profile management face immediate risk of site takeover, data exfiltration, and lateral movement into connected systems. The 9.1 CVSS score reflects the severity: unauthenticated attackers may exploit this without special privileges, making it a high-priority patch target across all affected deployments.

Casky's 322 mapped skills leverage Claude's extended reasoning to detect the attack patterns underlying this vulnerability across MITRE ATT&CK techniques TA0001 (Initial Access) and TA0043 (Reconnaissance). Practitioners using Casky would identify reconnaissance activity through suspicious editor API calls and parameter fuzzing attempts, followed by code execution payloads in editor input fields—classic signatures of CWE-94 exploitation. The platform's skill coverage maps detection rules for malicious serialized PHP objects, eval() function abuse, and template injection patterns specific to WordPress plugin contexts. Security teams would see findings flagging unusual editor activity, unexpected code generation in plugin logs, and process execution chains originating from web server contexts—enabling rapid identification and response before exploitation succeeds.

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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 →

322 Casky skills cover this attack pattern

These skills use Claude AI's reasoning model to surface findings in the same attack categories as CVE-2026-27436.

abusing-dpapi-for-credential-access

red teaming · high

Run

abusing-shadow-credentials-for-privesc

red teaming · high

Run

achieving-cmmc-level-2-compliance

compliance governance · low

Run

MITRE ATT&CK Techniques

TA0001 TA0043

Investigate the attack patterns behind CVE-2026-27436

Casky has 322 skills that investigate the attack patterns behind CVE-2026-27436. Run one and get CVSS-scored findings in 3 minutes.

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