{"id":"CVE-2026-110290","revision":"ce09bed6cd2a4216a45d2fb779316ace","records":[{"revision":"ce09bed6cd2a4216a45d2fb779316ace","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-110290","aliases":[],"title":"WebberZone Top 10 <= 4.5.2 - Authenticated (Contributor+) Stored Cross-Site Scripting via 'other_attributes' Block Attribute","description":"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, 4.5.2 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.","state":0,"publishedAt":"2026-10-16T06:41:03.815+00:00","modifiedAt":"2026-10-16T14:39:03.035+00:00","affected":[{"ecosystem":"Vendor product","name":"WebberZone Top 10 — Popular Posts","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"vendor\": \"ajay\",\n                    \"product\": \"WebberZone Top 10 — Popular Posts\",\n                    \"versions\": [\n                        {\n                            \"version\": \"0\",\n                            \"status\": \"affected\",\n                            \"lessThanOrEqual\": \"4.5.2\",\n                            \"versionType\": \"semver\"\n                        }\n                    ],\n                    \"defaultStatus\": \"unaffected\"\n                }"}],"metrics":[{"system":"CVSS 3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N","score":6.4,"severity":"MEDIUM"}],"references":["https://www.wordfence.com/threat-intel/vulnerabilities/id/4db4a201-a7fa-4764-87cb-c54b64adf560?source=cve","https://plugins.trac.wordpress.org/browser/top-10/tags/4.5.2/includes/frontend/class-display.php#L170","https://plugins.trac.wordpress.org/browser/top-10/tags/4.5.2/includes/frontend/class-display.php#L153","https://plugins.trac.wordpress.org/browser/top-10/tags/4.5.2/includes/util/class-helpers.php#L693","https://plugins.trac.wordpress.org/browser/top-10/tags/4.5.2/includes/frontend/blocks/class-blocks.php#L142","https://plugins.trac.wordpress.org/browser/top-10/tags/4.5.2/includes/frontend/blocks/class-blocks.php#L128","https://plugins.trac.wordpress.org/changeset/3747022","https://plugins.trac.wordpress.org/browser/top-10/tags/4.5.3/includes/frontend/class-display.php"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-110290","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-110290","identifiers":["CVE-2026-110290"]},"retained":false,"historicalAffected":[]}],"coverage":[]}