CVE-2026-19856 - All in One SEO < 5.0.2.1 - Unauthenticated Arbitrary Shortcode Execution via Search Query

CVE-2026-19856 - All in One SEO < 5.0.2.1 - Unauthenticated Arbitrary Shortcode Execution via Search Query

https://cvefeed.io/rssfeed/latest.atom / Fri, 10/02/2026 - 22:50
CVE ID :CVE-2026-19856
Published : Oct. 2, 2026, 6:25 p.m. | 48 minutes ago
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.
Severity: 6.5 | MEDIUM
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About

Kenya Education Network CERT(KENET-CERT) is a Cybersecurity Emergency Response Team and Co-ordination Center operated by the National Research and Education Network of Kenya. KENET-CERT coordination center promotes awareness on cybersecurity incidences as well as coordinates and assists member institutions in responding effectively to cyber security threats and incidences. KENET-CERT works closely with Kenya's National CIRT coordination center (CIRT/CC) as a sector CIRT for the academic institutions. KENET promotes use of ICT in Teaching, Learning and Research in Higher Education Institutions in Kenya. KENET aims to interconnect all the Universities, Tertiary and Research Institutions in Kenya by setting up a cost effective and sustainable private network with high speed access to the global Internet. KENET also facilitates electronic communication among students and faculties in member institutions, share learning and teaching resources by collaboration in Research and Development of Educational content.