EUVD-2026-81353
GHSA-rfgp-h9r2-p373
Severity by source
AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N
Network AJAX, low complexity, any authenticated subscriber (PR:L), no UI; no confidentiality/availability, but permanent deletion of all stored submissions is full integrity loss (I:H).
Primary rating from Vendor (WPScan).
CVSS VectorVendor: WPScan
Lifecycle Timeline
6DescriptionCVE.org
The Invisible Anti-Spam & CAPTCHA - reCAPTCHA Alternative for All Forms WordPress plugin before 5.1.1 does not check the user's capabilities in its message deletion AJAX action, and only tests that a nonce parameter is present rather than validating it, allowing any authenticated user, such as a subscriber, to permanently delete every form submission the Invisible Anti-Spam & CAPTCHA - reCAPTCHA Alternative for All Forms WordPress plugin before 5.1.1 has stored.
AnalysisAI
Any authenticated WordPress user - including a subscriber with no elevated privileges - can permanently delete every stored form submission in versions of the 'Invisible Anti-Spam & CAPTCHA - reCAPTCHA Alternative for All Forms' plugin prior to 5.1.1, because the plugin's message-deletion AJAX action performs no capability check and merely tests that a nonce parameter is present rather than validating it. The attack is network-reachable, needs no user interaction and no valid nonce, and publicly available exploit code exists, so the practical barrier is simply holding any low-privilege account (for example, via open registration). …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Requires only a single authenticated account at any privilege level - the description explicitly names a subscriber as sufficient - so the practical prerequisite is that the target site allows user registration or the attacker otherwise holds any low-privilege login. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | This is a genuine but moderate-priority integrity issue, not an inflated high-CVSS finding. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | Full exploit scenario with step-by-step reproduction available after sign-in. |
| Remediation | Apply the vendor-released patch by updating the 'Invisible Anti-Spam & CAPTCHA - reCAPTCHA Alternative for All Forms' plugin to version 5.1.1 or later; patch availability is confirmed by the vendor/WPScan advisory at https://wpscan.com/vulnerability/08860091-c3e4-43f1-b2e2-82fb8d45a5fa/ (see also https://nvd.nist.gov/vuln/detail/CVE-2026-91010 and https://vuldb.com/vuln/406326). … Detailed patch versions, workarounds, and compensating controls in full report. |
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External POC / Exploit Code
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