CVE-2026-9239

{"id": "CVE-2026-9239", "cveTags": [], "metrics": {"ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-9239", "role": "CISA Coordinator", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "version": "2.0.3", "timestamp": "2026-10-30T17:33:50.978497Z"}}], "cvssMetricV31": [{"type": "Secondary", "source": "security@wordfence.com", "cvssData": {"scope": "CHANGED", "version": "3.1", "baseScore": 6.4, "attackVector": "NETWORK", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N", "integrityImpact": "LOW", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "NONE", "privilegesRequired": "LOW", "confidentialityImpact": "LOW"}, "impactScore": 2.7, "exploitabilityScore": 3.1}]}, "affected": [{"source": "security@wordfence.com", "affectedData": [{"vendor": "tigroumeow", "product": "Meow Gallery", "versions": [{"status": "affected", "version": "0", "versionType": "semver", "lessThanOrEqual": "5.5.1"}], "defaultStatus": "unaffected"}]}], "published": "2026-10-30T18:18:21.613", "references": [{"url": "https://plugins.trac.wordpress.org/browser/meow-gallery/tags/5.4.5/classes/core.php#L465", "source": "security@wordfence.com"}, {"url": "https://plugins.trac.wordpress.org/browser/meow-gallery/tags/5.4.5/classes/core.php#L469", "source": "security@wordfence.com"}, {"url": "https://plugins.trac.wordpress.org/browser/meow-gallery/tags/5.4.5/classes/run.php#L12", "source": "security@wordfence.com"}, {"url": "https://plugins.trac.wordpress.org/browser/meow-gallery/tags/5.4.9/classes/core.php#L465", "source": "security@wordfence.com"}, {"url": "https://plugins.trac.wordpress.org/browser/meow-gallery/tags/5.4.9/classes/core.php#L469", "source": "security@wordfence.com"}, {"url": "https://plugins.trac.wordpress.org/browser/meow-gallery/tags/5.4.9/classes/run.php#L12", "source": "security@wordfence.com"}, {"url": "https://plugins.trac.wordpress.org/changeset?old_path=/meow-gallery/tags/5.5.1&new_path=/meow-gallery/tags/5.5.2", "source": "security@wordfence.com"}, {"url": "https://www.wordfence.com/threat-intel/vulnerabilities/id/49afa739-83f0-4ad7-9e5e-d600f293b938?source=cve", "source": "security@wordfence.com"}], "vulnStatus": "Deferred", "weaknesses": [{"type": "Secondary", "source": "security@wordfence.com", "description": [{"lang": "en", "value": "CWE-79"}]}], "descriptions": [{"lang": "en", "value": "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. 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."}], "lastModified": "2026-10-30T19:20:29.180", "sourceIdentifier": "security@wordfence.com"}