# CVE-2026-91010: Invisible Anti-Spam & CAPTCHA < 5.1.1 - Subscriber+ Arbitrary Form Submission Deletion

> Authenticated subscribers can permanently delete all form submissions due to missing capability checks in the plugin's AJAX action.

- **Severity:** Medium 4.3 (`CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N`)
- **Exploited in the wild:** Not known
- **Login needed:** Any signed-in user
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 17 Sep 2026
- **Updated:** 17 Sep 2026
- **Also known as:** GHSA-rfgp-h9r2-p373

## What is CVE-2026-91010?

CVE-2026-91010 is a medium-severity missing authorization vulnerability in Unknown Invisible Anti-Spam & CAPTCHA — reCAPTCHA Alternative for All Forms, published on 17 Sep 2026. Any signed-in user can exploit it over the network, with no action from the victim.

### Official 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.

Weakness: CWE-862 (Missing Authorization)

## Which versions are affected by CVE-2026-91010?


## How do I fix CVE-2026-91010?

No fix has been published for CVE-2026-91010 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-91010 being exploited?

There is no known exploitation of CVE-2026-91010 in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-91010 and fix it if it is affected.

What it is: CVE-2026-91010 is a medium-severity missing authorization vulnerability in Unknown Invisible Anti-Spam & CAPTCHA — reCAPTCHA Alternative for All Forms, published on 17 Sep 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2026-91010 in the wild and no public exploit code.

Affected product: Unknown Invisible Anti-Spam & CAPTCHA — reCAPTCHA Alternative for All Forms. No package-level version data is available, so check the vendor advisory linked from the reference page.

Task:
1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.
2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.
3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.
4. Run the tests and summarise what changed and why.
5. If nothing in the project is affected, say so and change nothing.

Reference: https://insights.sbomify.com/CVE-2026-91010/ (Markdown: https://insights.sbomify.com/CVE-2026-91010/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-91010
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-91010
- OSV: https://osv.dev/vulnerability/CVE-2026-91010

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-91010/
Summaries are generated and may contain mistakes; the official description above is the record.