CVE-2026-9239

{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-9239", "assignerOrgId": "b15e7b5b-3da4-40ae-a43c-f7aa60e62599", "state": "PUBLISHED", "assignerShortName": "Wordfence", "dateReserved": "2026-05-21T18:54:00.426Z", "datePublished": "2026-10-30T17:15:26.845Z", "dateUpdated": "2026-10-30T18:08:58.980Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "b15e7b5b-3da4-40ae-a43c-f7aa60e62599", "shortName": "Wordfence", "dateUpdated": "2026-10-30T17:15:26.845Z"}, "affected": [{"vendor": "tigroumeow", "product": "Meow Gallery", "versions": [{"version": "0", "status": "affected", "lessThanOrEqual": "5.5.1", "versionType": "semver"}], "defaultStatus": "unaffected"}], "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."}], "title": "Meow Gallery <= 5.5.1 - Authenticated (Author+) Stored Cross-Site Scripting via Attachment Alt Text (aria-label attribute)", "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"}], "problemTypes": [{"descriptions": [{"lang": "en", "description": "CWE-79 Improper Neutralization of Input During Web Page Generation", "cweId": "CWE-79", "type": "CWE"}]}], "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"}}], "credits": [{"lang": "en", "type": "finder", "value": "Yat"}], "timeline": [{"time": "2026-05-21T19:12:36.000Z", "lang": "en", "value": "Vendor Notified"}, {"time": "2026-10-30T17:09:57.000Z", "lang": "en", "value": "Disclosed"}]}, "adp": [{"metrics": [{"other": {"type": "ssvc", "content": {"id": "CVE-2026-9239", "role": "CISA Coordinator", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "partial"}], "version": "2.0.3", "timestamp": "2026-10-30T17:33:50.978497Z"}}}], "title": "CISA ADP Vulnrichment", "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-10-30T18:08:58.980Z"}}]}}

{"dataType": "CVE_RECORD", "containers": {"adp": [{"title": "CISA ADP Vulnrichment", "metrics": [{"other": {"type": "ssvc", "content": {"id": "CVE-2026-9239", "role": "CISA Coordinator", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "partial"}], "version": "2.0.3", "timestamp": "2026-10-30T17:33:50.978497Z"}}}], "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-10-30T18:01:53.444Z"}}], "cna": {"title": "Meow Gallery <= 5.5.1 - Authenticated (Author+) Stored Cross-Site Scripting via Attachment Alt Text (aria-label attribute)", "credits": [{"lang": "en", "type": "finder", "value": "Yat"}], "metrics": [{"cvssV3_1": {"version": "3.1", "baseScore": 6.4, "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N"}}], "affected": [{"vendor": "tigroumeow", "product": "Meow Gallery", "versions": [{"status": "affected", "version": "0", "versionType": "semver", "lessThanOrEqual": "5.5.1"}], "defaultStatus": "unaffected"}], "timeline": [{"lang": "en", "time": "2026-05-21T19:12:36.000Z", "value": "Vendor Notified"}, {"lang": "en", "time": "2026-10-30T17:09:57.000Z", "value": "Disclosed"}], "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"}], "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."}], "problemTypes": [{"descriptions": [{"lang": "en", "type": "CWE", "cweId": "CWE-79", "description": "CWE-79 Improper Neutralization of Input During Web Page Generation"}]}], "providerMetadata": {"orgId": "b15e7b5b-3da4-40ae-a43c-f7aa60e62599", "shortName": "Wordfence", "dateUpdated": "2026-10-30T17:15:26.845Z"}}}, "cveMetadata": {"cveId": "CVE-2026-9239", "state": "PUBLISHED", "dateUpdated": "2026-10-30T18:08:58.980Z", "dateReserved": "2026-05-21T18:54:00.426Z", "assignerOrgId": "b15e7b5b-3da4-40ae-a43c-f7aa60e62599", "datePublished": "2026-10-30T17:15:26.845Z", "assignerShortName": "Wordfence"}, "dataVersion": "5.2"}

{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "product": "Meow Gallery", "vendor": "tigroumeow", "versions": [{"lessThanOrEqual": "5.5.1", "status": "affected", "version": "0", "versionType": "semver"}]}], "source": "security@wordfence.com"}], "cveTags": [], "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."}], "id": "CVE-2026-9239", "lastModified": "2026-10-30T19:20:29.180", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 6.4, "baseSeverity": "MEDIUM", "confidentialityImpact": "LOW", "integrityImpact": "LOW", "privilegesRequired": "LOW", "scope": "CHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N", "version": "3.1"}, "exploitabilityScore": 3.1, "impactScore": 2.7, "source": "security@wordfence.com", "type": "Secondary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-9239", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "role": "CISA Coordinator", "timestamp": "2026-10-30T17:33:50.978497Z", "version": "2.0.3"}}]}, "published": "2026-10-30T18:18:21.613", "references": [{"source": "security@wordfence.com", "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"}], "sourceIdentifier": "security@wordfence.com", "vulnStatus": "Deferred", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-79"}], "source": "security@wordfence.com", "type": "Secondary"}]}

{}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[0,5.5.1]"}}], "enrichment": {"confidence": 95.0, "confidence_source": "inferred", "scores": [{"score": 95.0, "source": "inferred"}, {"score": 100.0, "source": "matching"}]}, "original": {"product": "Meow Gallery", "source": "cna", "vendor": "tigroumeow"}, "product": "meow_gallery", "vendor": "tigroumeow"}, {"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[0,5.5.1]"}}], "enrichment": {"confidence": 90.0, "confidence_source": "inferred", "scores": [{"score": 90.0, "source": "inferred"}, {"score": 100.0, "source": "matching"}]}, "product": "meow_gallery", "vendor": "wordpress-extensions"}], "created": "2026-10-30T19:00:17.803508+00:00", "updated": "2026-10-30T19:15:16.317834+00:00", "vendors": ["tigroumeow", "tigroumeow$PRODUCT$meow_gallery", "wordpress-extensions", "wordpress-extensions$PRODUCT$meow_gallery"]}