How severe is CVE-2025-8427?

CVE-2025-8427 has a CVSS 3.x base score of 6.4, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is low, integrity low, and availability none.

Is CVE-2025-8427 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (6th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2025-8427?

CVE-2025-8427 affects Fastlinemedia Beaver Builder. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2025-8427?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

Does CVE-2025-8427 have an EU (EUVD) identifier?

Yes. CVE-2025-8427 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-35678.

When was CVE-2025-8427 published?

CVE-2025-8427 was published on 2025-10-23 and last updated on 2026-06-17.

CVE-2025-8427

CVE-2025-8427 is a medium-severity vulnerability in Fastlinemedia Beaver Builder with a CVSS 3.x base score of 6.4. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-79.

Key facts

Severity: Medium (CVSS 3.x base score 6.4)
EPSS exploit prediction: 0% (6th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2025-35678
Weakness: CWE-79
Affected product: Fastlinemedia Beaver Builder
Published: 2025-10-23
Last modified: 2026-06-17

Description

The Beaver Builder Plugin (Starter Version) plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the ‘auto_play’ parameter in all versions up to, and including, 2.9.2.1 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with Contributor-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.

Frequently asked questions

What is CVE-2025-8427?: The Beaver Builder Plugin (Starter Version) plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the ‘auto_play’ parameter in all versions up to, and including, 2.9.2.1 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with Contributor-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.
How severe is CVE-2025-8427?: CVE-2025-8427 has a CVSS 3.x base score of 6.4, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is low, integrity low, and availability none.
Is CVE-2025-8427 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (6th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2025-8427?: CVE-2025-8427 affects Fastlinemedia Beaver Builder. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2025-8427?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2025-8427 have an EU (EUVD) identifier?: Yes. CVE-2025-8427 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-35678.
When was CVE-2025-8427 published?: CVE-2025-8427 was published on 2025-10-23 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:fastlinemedia:beaver_builder:*:*:*:*:lite:wordpress:*:*

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