WordPress SoftMarket Plugin Fails to Validate Email Verification Tokens

The SoftMarket — Digital Marketplace WordPress plugin through 1.0.0 does not properly validate an authentication token in one branch of its email-verification flow, allowing unauthenticated attackers to obtain a valid session as any verified user by supplying only that user's ID.

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 SoftMarket Digital Marketplace WordPress plugin contains a critical authentication bypass vulnerability in its email-verification flow. By exploiting inadequate token validation, unauthenticated attackers can hijack sessions of any verified user using only their user ID—completely circumventing intended authentication mechanisms. This affects any WordPress installation running the vulnerable plugin version 1.0.0 or earlier, putting user accounts, marketplace transactions, and sensitive data at immediate risk. The CVSS 9.1 rating reflects the severity: attackers gain full authenticated access without credentials, passwords, or multi-factor authentication.

Casky's 283 mapped security skills leverage Claude AI's extended reasoning to correlate this vulnerability with MITRE ATT&CK techniques TA0004 (Privilege Escalation) and TA0006 (Credential Access). Practitioners would detect attack patterns including: anomalous session creation tied to TA0004 techniques showing authentication bypass, session tokens generated without proper cryptographic validation, and lateral movement indicators as attackers pivot using hijacked accounts. Claude's reasoning engine traces the authentication logic flow, identifying where token validation branches fail to properly authenticate requests. Findings would highlight suspicious session initiations lacking corresponding login events, user IDs being accepted as authentication proof, and access logs showing verified-user activity from unauthenticated sources—all critical indicators of this specific authentication flaw being actively exploited.

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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-2026-14557.

abusing-dpapi-for-credential-access

red teaming · high

Run

abusing-shadow-credentials-for-privesc

red teaming · high

Run

Access with Stolen Session Cookie

identity access management · low

Run

MITRE ATT&CK Techniques

TA0004 TA0006

Investigate the attack patterns behind CVE-2026-14557

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