CVE-2026-19856All in One SEO < 5.0.2.1 - Unauthenticated Arbitrary Shortcode Execution via Search Query
Updated under an hour ago ()
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It affects Unknown All in One SEO. Add what you run to find out whether that includes you.
No exploitation reported and no EPSS estimate yet.
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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.
- CVSS
- 6.5 MEDIUM (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N
- Weakness (CWE)
- CWE-74
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- WPScan
- NVD analysis
- Deferred
- Record last updated
- Oct 6, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
Unknown All in One SEO unknown:all_in_one_seo (from the name) | before 5.0.2.1 | CNA record |
References
- https://wpscan.com/vulnerability/e35365d3-65de-45a7-9629-17aacd5299c7/exploit, vdb-entry, technical-description
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.