CVE-2025-8427Network attack vector

Contributor-level stored XSS via non-Boolean autoplay setting

Published Oct 23, 2025 · Updated Oct 23, 2025

Stored XSS in Beaver Builder Page Builder 2.9.2.1 and earlier allows remote authenticated users to inject scripts through auto_play. The Testimonials Module accepts the auto_play setting without enforcing a Boolean value, then renders it without sufficient sanitization and output escaping. Contributor-level access is sufficient to store the payload in a page, and the script runs in each visitor's browser when the page is opened.

CVSS severity5.4
Medium
EPSS probability0.16%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Stored XSS in Beaver Builder Page Builder 2.9.2.1 and earlier allows remote authenticated users to inject scripts through auto_play. The Testimonials Module accepts the auto_play setting without enforcing a Boolean value, then renders it without sufficient sanitization and output escaping. Contributor-level access is sufficient to store the payload in a page, and the script runs in each visitor's browser when the page is opened.

The record

CVE
CVE-2025-8427
Published
Oct 23, 2025
Updated
Oct 23, 2025
Vendor
FastLine Media LLC
Product
Beaver Builder Page Builder
Classifications
CWE-79, T1059.007
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Oct 23, 2025CVE publishedPublication date reported by the CVE source.
  2. Oct 23, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=* <=2.9.2.1

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

FastLine Media LLC · Beaver Builder Page Builderversion=* <=2.9.2.1

Published CVSS scores

6.4WordfenceCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N
5.4NVDCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
T1059.007JavaScript/JScript

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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