{"id":"CVE-2026-18435","state":"PUBLISHED","title":"Kadence Blocks <= 3.7.8 - Authenticated (Contributor+) Stored Cross-Site Scripting via 'toggleIcon' Block Attribute","description":"The Kadence Blocks — Page Builder Toolkit for Gutenberg Editor plugin for WordPress is vulnerable to Stored Cross-Site Scripting via 'toggleIcon' Block Attribute in all versions up to, and including, 3.7.8 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.","publishedAt":"2026-08-01T07:49:47.486Z","updatedAt":"2026-08-03T17:35:46.899Z","severity":{"score":6.4,"label":"Medium","version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N","source":"Wordfence"},"assigner":"Wordfence","products":["stellarwp Kadence Blocks — Page Builder Toolkit for Gutenberg Editor"],"affected":[{"vendor":"stellarwp","product":"Kadence Blocks — Page Builder Toolkit for Gutenberg Editor","defaultStatus":"unaffected","versions":[{"version":"0","status":"affected","lessThanOrEqual":"3.7.8","versionType":"semver"}]}],"references":["https://www.wordfence.com/threat-intel/vulnerabilities/id/5f346cc7-92ad-4f76-a71c-864c22ed56b5?source=cve","https://plugins.trac.wordpress.org/browser/kadence-blocks/tags/3.7.8/includes/class-kadence-blocks-table-of-contents.php#L936","https://plugins.trac.wordpress.org/browser/kadence-blocks/tags/3.7.8/includes/blocks/class-kadence-blocks-table-of-contents-block.php#L293","https://plugins.trac.wordpress.org/changeset?reponame=&old=3624906%40kadence-blocks&new=3624906%40kadence-blocks"],"weaknesses":["CWE-79"],"ingestedAt":"2026-10-29T20:11:10.572Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/18xxx/CVE-2026-18435.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-18435","state":"PUBLISHED","datePublished":"2026-08-01T07:49:47.486Z","dateUpdated":"2026-08-03T17:35:46.899Z","assignerShortName":"Wordfence","assignerOrgId":"b15e7b5b-3da4-40ae-a43c-f7aa60e62599","dateReserved":"2026-07-30T20:08:07.545Z"},"containers":{"cna":{"title":"Kadence Blocks <= 3.7.8 - Authenticated (Contributor+) Stored Cross-Site Scripting via 'toggleIcon' Block Attribute","descriptions":[{"lang":"en","value":"The Kadence Blocks — Page Builder Toolkit for Gutenberg Editor plugin for WordPress is vulnerable to Stored Cross-Site Scripting via 'toggleIcon' Block Attribute in all versions up to, and including, 3.7.8 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."}],"affected":[{"vendor":"stellarwp","product":"Kadence Blocks — Page Builder Toolkit for Gutenberg Editor","defaultStatus":"unaffected","versions":[{"version":"0","status":"affected","lessThanOrEqual":"3.7.8","versionType":"semver"}]}],"references":[{"url":"https://www.wordfence.com/threat-intel/vulnerabilities/id/5f346cc7-92ad-4f76-a71c-864c22ed56b5?source=cve"},{"url":"https://plugins.trac.wordpress.org/browser/kadence-blocks/tags/3.7.8/includes/class-kadence-blocks-table-of-contents.php#L936"},{"url":"https://plugins.trac.wordpress.org/browser/kadence-blocks/tags/3.7.8/includes/blocks/class-kadence-blocks-table-of-contents-block.php#L293"},{"url":"https://plugins.trac.wordpress.org/changeset?reponame=&old=3624906%40kadence-blocks&new=3624906%40kadence-blocks"}],"metrics":[{"cvssV3_1":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N","baseScore":6.4,"baseSeverity":"MEDIUM"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-79","lang":"en","description":"CWE-79 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')","type":"CWE"}]}],"providerMetadata":{"shortName":"Wordfence","orgId":"b15e7b5b-3da4-40ae-a43c-f7aa60e62599","dateUpdated":"2026-08-01T07:49:47.486Z"},"credits":[{"lang":"en","type":"finder","value":"Wordfence PRISM"}],"timeline":[{"time":"2026-07-30T20:23:14.000Z","lang":"en","value":"Vendor Notified"},{"time":"2026-07-31T19:39:02.000Z","lang":"en","value":"Disclosed"}]},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-08-03T17:34:38.670941Z","id":"CVE-2026-18435","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-08-03T17:35:46.899Z"}}]}}}