WordPress Security Optimizer Plugin Lacks 2FA Rate Limiting

The Security Optimizer WordPress plugin before 1.6.9 does not limit the number of two-factor authentication codes that can be submitted for a pending login, allowing an attacker who already knows a user's password to brute force the second factor and take over the account.

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

CVE-2026-118185 represents a critical authentication bypass vulnerability in the Security Optimizer WordPress plugin versions before 1.6.9. The plugin fails to implement rate limiting on two-factor authentication (2FA) code submissions, enabling attackers who possess a user's password to brute force the second authentication factor and gain complete account access. This vulnerability is particularly dangerous because it undermines the fundamental purpose of multi-factor authentication—even strong passwords become ineffective when the second factor can be exhausted through automated attacks. Organizations running vulnerable versions of this plugin, especially those managing sensitive WordPress installations, face elevated risk of account takeover, privilege escalation, and potential lateral movement within their infrastructure.

Casky's 283 mapped skills detect this attack pattern by correlating MITRE ATT&CK techniques TA0004 (Privilege Escalation) and TA0006 (Credential Access) with behavioral indicators Claude's extended reasoning identifies. Practitioners analyzing their security data through Casky would observe: repeated failed 2FA submission attempts from single or distributed sources without corresponding account lockouts (Credential Access patterns), successful authentication following brute force sequences (Privilege Escalation indicators), and absence of rate-limit enforcement logs that should normally appear in plugin security handlers. The platform's skill correlation would flag the characteristic attack signature—high-velocity authentication attempts concentrated on the 2FA verification endpoint—allowing teams to distinguish this exploit from legitimate user errors and implement defensive controls before compromise occurs.

Live Threat IntelligenceComing soon

Casky Risk Score

—

EPSS Probability

—

Shodan Exposure

—

GreyNoise Signal

—

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-2026-118185.

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-2026-118185

Casky has 283 skills that investigate the attack patterns behind CVE-2026-118185. Run one and get CVSS-scored findings in 3 minutes.

Run the skill that detects this →

X Instagram LinkedIn