CVE-2026-91010: Invisible Anti-Spam & CAPTCHA (WordPress plugin) · Missing Authorization
Affects Invisible Anti-Spam & CAPTCHA (WordPress plugin)Source CVE Database V5
Not known to be exploited · CVSS 4.3 Medium : upgrade to 5.1.1 when convenient.
Data as of 1 Nov 2026, 08:20 UTC
- EPSS
- 0.2% chance of exploitation in 30 days – higher than 17% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
- Patch
- Available – fixed in 5.1.1
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:NExploitation evidence
Disclosed: evidence found.
CVE published 17 Sep 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponized: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors
A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 31 Oct 2026.
What to do
Upgrade Invisible Anti-Spam & CAPTCHA (WordPress plugin) to 5.1.1.
Affected software
| Product | Affected | Fixed in |
|---|---|---|
| Invisible Anti-Spam & CAPTCHA — reCAPTCHA Alternative for All Forms | Affected
| Fixed in
|
AI-suggested
Upgrade the Invisible Anti-Spam & CAPTCHA — reCAPTCHA Alternative for All Forms WordPress plugin to version 5.1.1 or later, where this authorization issue is fixed. Until then, restrict user roles that can authenticate on the site to trusted users only.
Description
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.