CVE-2025-8607CWE-79

SlingBlocks – Gutenberg Blocks by FunnelKit (Formerly WooFunnels) <= 1.6.0 - Authenticated (Contributor+) Stored Cross-Site Scripting

Medium · published August 21, 2025

CVSS v3.1
6.4
EPSS
0%
Percentile
9.8
In the wild
Unconfirmed
What it is

The SlingBlocks – Gutenberg Blocks by FunnelKit (Formerly WooFunnels) plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the plugin's Countdown block's attributes in all versions up to, and including, 1.6.0 due to insufficient input sanitization and output escaping on user supplied attributes. 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.

The record
Technical detail
CVSS v3.1
6.4 · MEDIUM
Vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N
CVSS v4.0
Not supplied
EPSS
0.00203 · 9.8th percentile
Weakness
CWE-79 · Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Published
2025-08-21T05:28Z
EPSS history
Timeline
  • 21 AUG 05:28Z
    SlingBlocks – Gutenberg Blocks by FunnelKit (Formerly WooFunnels) <= 1.6.0 - Authenticated (Contributor+) Stored Cross-Site Scripting
    cvelistv5