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FastBots Plugin Vulnerability (CVE-2026-6800)

Nick Paliughi
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Security Alert Summary

The FastBots plugin for WordPress contains a stored cross-site scripting (XSS) vulnerability in its administrative settings. Authenticated attackers with administrator-level permissions can inject scripts that persist in plugin settings and execute when affected pages are viewed. The issue affects multisite networks and sites where the unfiltered_html capability is disabled.

CVE Details

  • CVE ID: CVE-2026-6800
  • Affected component: FastBots plugin for WordPress
  • Affected versions: All versions up to and including 1.0.12
  • Published: May 12, 2026 at 10:16:48 AM
  • Last modified: May 12, 2026 at 2:03:52 PM
  • CVSS v3.1: Base Score 4.4 (MEDIUM) – Vector: CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:C/C:L/I:L/A:N
  • Authentication / privileges / user interaction: Requires an authenticated attacker with administrator-level privileges (PR: High). No user interaction is required (UI: None).
  • Primary impact: Confidentiality: Low; Integrity: Low; Availability: None
  • Weakness: CWE-79 (Stored Cross-Site Scripting)

Technical Details

The vulnerability is a stored cross-site scripting issue caused by insufficient input sanitization and output escaping in the plugin’s administrative settings. Authenticated attackers with administrator-level permissions can inject arbitrary web scripts into fields stored by the plugin. Those scripts persist in plugin settings and execute whenever a user accesses an injected page.

The disclosure references the plugin’s administrative code paths, including settings-page.php and fastbots.php, indicating the settings UI and core administration files handle input or render output without adequate sanitization/escaping. The flaw specifically affects multisite installations and installations where unfiltered_html has been disabled.

Impact is limited to script execution within affected pages and the resulting client-side effects such as theft of data accessible to the browser, modification of displayed content, or actions performed with the viewer’s privileges. The CVSS vector shows network accessibility but requires high privileges to exploit.

How This Could Impact Your Website

In a multisite environment or on a site where administrators cannot use unfiltered HTML, an attacker who already has administrator access could store malicious scripts in FastBots settings. For example, an external contractor with elevated privileges or a compromised administrator account could add a payload that runs when other administrators or editors view specific admin pages.

Practical consequences include exposure of internal user information visible on affected pages (such as email addresses), an increased risk of targeted phishing or social engineering against staff, and unauthorized actions executed in the context of users viewing the injected content. The risk is tied to client-side script execution rather than direct server takeover.

If you're unsure whether your site is affected or how to assess your current user roles and plugins, it may be worth having a professional review your setup.

Recommended Actions

  • Update the affected plugin as soon as a patched version is available.
  • Review and reduce unnecessary user roles, especially contributor and administrator accounts.
  • Enforce strong passwords and enable two-factor authentication for editors and administrators.
  • Remove unused or unmaintained plugins.
  • Monitor site activity and logs for unusual behavior related to admin settings changes or unexpected scripts appearing in admin pages.

If you'd like help reviewing your plugins, user roles, or overall WordPress security posture, our team at Freshy is happy to help.

References

Nick Paliughihttps://freshysites.com/team/nick-paliughi/
Nick was born in California and now resides in Lake Worth, FL. He has 10 years of experience building and maintaining sites in WordPress, which he is excited to put to use at Freshy. Prior to starting at Freshy in 2022 his focus was on WordPress security & malware removal. When he’s not tending to your website, Nick is installing exhibitions at art galleries and museums in Palm Beach County, and if he’s lucky surfing at the Lake Worth pier.

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