CVE-2026-19856
All in One SEO < 5.0.2.1 - Unauthenticated Arbitrary Shortcode Execution via Search Query
CVSS Score
6.5
EPSS Score
0.0%
EPSS Percentile
0th
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.
| Vendor | unknown |
| Product | all in one seo |
| Published | Oct 2, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability
Affected Versions
Unknown / All in One SEO
0 < 5.0.2.1
References
Credits
Jakub Herman WPScan