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CVE-2026-19856

MEDIUM 6.5 CVSS 3.1
Published
October 2, 2026
Last modified
October 6, 2026
NVD status
Deferred
Reported by
contact@wpscan.com
Weakness
CWE-74
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N

Description

The All in One SEO WordPress plugin before 5.0.2.1 does not correctly determine which shortcodes are present in content derived from user input before deciding which ones to strip, allowing unauthenticated users to execute arbitrary shortcodes registered on the site. On sites upgraded from older versions the protection is disabled outright, making the issue reachable without any crafted input.

Affected WordPress components

  • All in One SEO – AI SEO Plugin to Boost SEO Rankings & Traffic (Schema, Local SEO, Sitemap & SEO Insights) Plugin · all-in-one-seo-pack
    Confirmed match Active
    Before 5.0.2.1
    View on WordPress.org

A confirmed match is backed by the plugin or theme slug. A possible match is based on the product name only and should be verified.

Affected products and versions

  • Unknown All in One SEO — Before 5.0.2.1

References

  • wpscan.com https://wpscan.com/vulnerability/e35365d3-65de-45a7-9629-17aacd5299c7/
  • nvd.nist.gov Official NVD record