CVE-2026-91010Wordfence

Vulnerability Summary

The Invisible Anti-Spam & CAPTCHA plugin for WordPress is vulnerable to unauthorized access in all versions up to, and including, 5.1.0. This is due to a missing capability check on a function. This makes it possible for authenticated attackers, with subscriber-level access and above, to perform an unauthorized action.

Severity Level

MEDIUM(4.3)

Published Date

Sep 17, 2026

Last Modified

Sep 22, 2026

Exploitation Status

No confirmed exploitation yet

EPSS Score (30-Day)

0.15%Probability

Root Weakness (CWE)

CWE-862: Missing Authorization ↗

The software does not perform an authorization check when an actor attempts to access a resource or perform an action.

CVSS v3.1 Base Metrics — Score 4.3 (MEDIUM)

Attack VectorNetwork

Attack ComplexityLow

Privileges RequiredLow

User InteractionNone

ScopeUnchanged

ConfidentialityNone

IntegrityLow

AvailabilityNone

Affected & Patched Versions

Affected Versions

Invisible Anti-Spam & CAPTCHA — reCAPTCHA Alternative for All Forms * - 5.1.0

Patched Versions

Invisible Anti-Spam & CAPTCHA — reCAPTCHA Alternative for All Forms 1

📧Email Delivery — Threat intel straight to your inbox.

♾️Unlimited Vendors — Track your entire stack.

🚨All New CVEs — Be the first to know.

⚙️Custom EPSS — Filter noise, focus on risk.

💬Webhooks — Slack & Teams integration.

🚫Ad-Free — Uninterrupted experience.