{"id":"CVE-2026-9239","title":"Meow Gallery <= 5.5.1 - Authenticated (Author+) Stored Cross-Site Scripting via Attachment Alt Text (aria-label attribute)","summary":"The Meow Gallery plugin for WordPress is vulnerable to Stored Cross-Site Scripting via Attachment Alt Text (aria-label attribute) in all versions up to, and including, 5.5.1 due to insufficient input sanitization and output escaping. Thi…","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":"tigroumeow","product":"Meow Gallery","affected":["meow_gallery <= 5.5.1"],"ssvc":{"exploitation":"none","automatable":"no","technicalImpact":"partial","timestamp":"2026-10-30T17:33:50.978497Z"},"published":"2026-10-30","updated":"2026-10-30","sourceUpdated":"2026-10-30T18:08:58.980Z","source":"CVEORG","sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-9239","references":[{"url":"https://www.wordfence.com/threat-intel/vulnerabilities/id/49afa739-83f0-4ad7-9e5e-d600f293b938?source=cve"},{"url":"https://plugins.trac.wordpress.org/browser/meow-gallery/tags/5.4.9/classes/core.php#L469"},{"url":"https://plugins.trac.wordpress.org/browser/meow-gallery/tags/5.4.9/classes/core.php#L465"},{"url":"https://plugins.trac.wordpress.org/browser/meow-gallery/tags/5.4.9/classes/run.php#L12"},{"url":"https://plugins.trac.wordpress.org/browser/meow-gallery/tags/5.4.5/classes/core.php#L469"},{"url":"https://plugins.trac.wordpress.org/browser/meow-gallery/tags/5.4.5/classes/core.php#L465"},{"url":"https://plugins.trac.wordpress.org/browser/meow-gallery/tags/5.4.5/classes/run.php#L12"},{"url":"https://plugins.trac.wordpress.org/changeset?old_path=/meow-gallery/tags/5.5.1&new_path=/meow-gallery/tags/5.5.2"}],"tags":["cve.org"],"epss":0.0032,"epssPercentile":0.25073,"ingestedAt":"2026-11-05T16:24:31.311Z","slug":"CVE-2026-9239","body":"## Overview\n\nThe Meow Gallery plugin for WordPress is vulnerable to Stored Cross-Site Scripting via Attachment Alt Text (aria-label attribute) in all versions up to, and including, 5.5.1 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with author-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. The vulnerable code path is only reachable when a gallery item is rendered as a link (i.e., link_href is non-empty), and exploitation relies on the fact that WordPress's sanitize_text_field() strips angle-bracketed tags but preserves double quotes, allowing an attacker to break out of the aria-label attribute context and inject event-handler attributes such as onclick.\n\n## Affected\n\n- `meow_gallery <= 5.5.1`\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":0.1,"exploitation":0,"ransomware":0},"changes":[]}