{"id":"CVE-2026-110290","title":"WebberZone Top 10 <= 4.5.2 - Authenticated (Contributor+) Stored Cross-Site Scripting via 'other_attributes' Block Attribute","summary":"The WebberZone Top 10 — Popular Posts plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'other_attributes (parsed to inject instance_id) + undeclared is_widget' parameter in all versions up to, and including, 4.5.…","severity":"medium","cvss":6.4,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N","cvssSource":"cna","cwe":["CWE-79"],"vendor":"ajay","product":"WebberZone Top 10 — Popular Posts","affected":["webberzone_top_10_popular_posts <= 4.5.2"],"ssvc":{"exploitation":"none","automatable":"no","technicalImpact":"partial","timestamp":"2026-10-16T14:34:06.246372Z"},"published":"2026-10-16","updated":"2026-10-16","sourceUpdated":"2026-10-16T14:39:03.035Z","source":"CVEORG","sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-110290","references":[{"url":"https://www.wordfence.com/threat-intel/vulnerabilities/id/4db4a201-a7fa-4764-87cb-c54b64adf560?source=cve"},{"url":"https://plugins.trac.wordpress.org/browser/top-10/tags/4.5.2/includes/frontend/class-display.php#L170"},{"url":"https://plugins.trac.wordpress.org/browser/top-10/tags/4.5.2/includes/frontend/class-display.php#L153"},{"url":"https://plugins.trac.wordpress.org/browser/top-10/tags/4.5.2/includes/util/class-helpers.php#L693"},{"url":"https://plugins.trac.wordpress.org/browser/top-10/tags/4.5.2/includes/frontend/blocks/class-blocks.php#L142"},{"url":"https://plugins.trac.wordpress.org/browser/top-10/tags/4.5.2/includes/frontend/blocks/class-blocks.php#L128"},{"url":"https://plugins.trac.wordpress.org/changeset/3747022"},{"url":"https://plugins.trac.wordpress.org/browser/top-10/tags/4.5.3/includes/frontend/class-display.php"}],"tags":["cve.org"],"epss":0.00206,"epssPercentile":0.09891,"ingestedAt":"2026-10-16T07:01:11.479Z","slug":"CVE-2026-110290","body":"## Overview\n\nThe WebberZone Top 10 — Popular Posts plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'other_attributes (parsed to inject instance_id) + undeclared is_widget' parameter in all versions up to, and including, 4.5.2 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with contributor-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. The exploit requires setting the undeclared is_widget flag to '1' via block JSON, which activates the vulnerable code path that concatenates the attacker-controlled instance_id value into an unescaped HTML class attribute.\n\n## Affected\n\n- `webberzone_top_10_popular_posts <= 4.5.2`\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"sunlit","depthScore":35,"depthScoreParts":{"impact":35.2,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}