CVE-2026-1667CWE-862

SEO Plugin by Squirrly SEO <= 14.0.0 - Unauthenticated Arbitrary Post Creation and Stored Cross-Site Scripting via savePost()

High · published July 10, 2026

CVSS v3.1
7.2
EPSS
0%
Percentile
22.7
In the wild
Unconfirmed
What it is

The SEO Plugin by Squirrly SEO plugin for WordPress is vulnerable to Arbitrary Post Creation and Stored Cross-Site Scripting in all versions up to, and including, 14.0.0 due to a leak of an API token and insufficient input sanitization and output escaping. This makes it possible for unauthenticated attackers to create arbitrary posts, and, if the Advanced Custom Fields plugin is installed and activated, inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.

The record
Technical detail
CVSS v3.1
7.2 · HIGH
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N
CVSS v4.0
Not supplied
EPSS
0.00311 · 22.7th percentile
Weakness
CWE-862 · Missing Authorization
Published
2026-07-10T16:32Z
EPSS history
Timeline
  • 10 JUL 16:32Z
    SEO Plugin by Squirrly SEO <= 14.0.0 - Unauthenticated Arbitrary Post Creation and Stored Cross-Site Scripting via savePost()
    cvelistv5