{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-1395", "assignerOrgId": "b15e7b5b-3da4-40ae-a43c-f7aa60e62599", "state": "PUBLISHED", "assignerShortName": "Wordfence", "dateReserved": "2026-01-23T21:14:51.848Z", "datePublished": "2026-04-22T09:27:20.476Z", "dateUpdated": "2026-04-22T09:27:20.476Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "b15e7b5b-3da4-40ae-a43c-f7aa60e62599", "shortName": "Wordfence", "dateUpdated": "2026-04-22T09:27:20.476Z"}, "affected": [{"vendor": "gutentools", "product": "Gutentools", "versions": [{"version": "0", "status": "affected", "lessThanOrEqual": "1.1.3", "versionType": "semver"}], "defaultStatus": "unaffected"}], "descriptions": [{"lang": "en", "value": "The Gutentools plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the Post Slider block's block_id attribute in all versions up to, and including, 1.1.3. This is due to insufficient input sanitization and output escaping combined with a custom unescaping routine that reintroduces dangerous characters. 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."}], "title": "Gutentools <= 1.1.3 - Authenticated (Contributor+) Stored Cross-Site Scripting via Post Slider Block Attributes", "references": [{"url": "https://www.wordfence.com/threat-intel/vulnerabilities/id/b2683b4e-b993-4c84-b7cc-a2cb511b4097?source=cve"}, {"url": "https://plugins.trac.wordpress.org/browser/gutentools/trunk/core/blocks/post-slider.php#L232"}, {"url": "https://plugins.trac.wordpress.org/browser/gutentools/tags/1.1.3/core/blocks/post-slider.php#L232"}, {"url": "https://plugins.trac.wordpress.org/browser/gutentools/trunk/core/gutentools_block.php#L123"}, {"url": "https://plugins.trac.wordpress.org/changeset/3476597/gutentools/trunk/core/blocks/post-slider.php"}], "problemTypes": [{"descriptions": [{"lang": "en", "description": "CWE-79 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')", "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": "Athiwat Tiprasaharn"}, {"lang": "en", "type": "finder", "value": "Itthidej Aramsri"}], "timeline": [{"time": "2026-04-21T20:38:53.000Z", "lang": "en", "value": "Disclosed"}]}}}

{}

{"cveTags": [], "descriptions": [{"lang": "en", "value": "The Gutentools plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the Post Slider block's block_id attribute in all versions up to, and including, 1.1.3. This is due to insufficient input sanitization and output escaping combined with a custom unescaping routine that reintroduces dangerous characters. 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."}], "id": "CVE-2026-1395", "lastModified": "2026-04-22T10:16:50.437", "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": "Primary"}]}, "published": "2026-04-22T10:16:50.437", "references": [{"source": "security@wordfence.com", "url": "https://plugins.trac.wordpress.org/browser/gutentools/tags/1.1.3/core/blocks/post-slider.php#L232"}, {"source": "security@wordfence.com", "url": "https://plugins.trac.wordpress.org/browser/gutentools/trunk/core/blocks/post-slider.php#L232"}, {"source": "security@wordfence.com", "url": "https://plugins.trac.wordpress.org/browser/gutentools/trunk/core/gutentools_block.php#L123"}, {"source": "security@wordfence.com", "url": "https://plugins.trac.wordpress.org/changeset/3476597/gutentools/trunk/core/blocks/post-slider.php"}, {"source": "security@wordfence.com", "url": "https://www.wordfence.com/threat-intel/vulnerabilities/id/b2683b4e-b993-4c84-b7cc-a2cb511b4097?source=cve"}], "sourceIdentifier": "security@wordfence.com", "vulnStatus": "Received", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-79"}], "source": "security@wordfence.com", "type": "Primary"}]}

{}

{"analysis": {"en": {"generated_at": "2026-04-22T10:21:25.175169+00:00", "value": {"mitigation_remediation": ["Upgrade the Gutentools plugin to the latest version (1.1.4 or later) where the block_id sanitization is fixed.", "If an upgrade is not immediately possible, restrict the Contributor role so that users cannot add or edit Post Slider blocks, or disable the Post Slider block entirely via plugin settings or custom code.", "As a temporary workaround, manually sanitize the block_id attribute by applying a whitelist of allowed characters or by using WordPress\u2019s sanitize_text_field function before output to the page.", "Continuously monitor the site for unexpected scripts and review user activity logs for unusual Contributor or higher access usage."], "summary": {"action": "Patch Immediately", "impact": "Stored Cross\u2011Site Scripting"}, "threat_synthesis": {"affected_systems": "All installations of the Gutentools plugin for WordPress running versions up to and including 1.1.3 are affected by this flaw. No other products are listed as impacted.", "description_and_impact": "The vulnerability arises from insufficient sanitization of the block_id attribute in the Gutentools Post Slider block. Authenticated users with Contributor or higher permissions can inject malicious scripts that are stored and rendered unsafely, enabling arbitrary JavaScript execution in the browsers of any site visitor. This can lead to session hijacking, data theft, defacement, or other client\u2011side compromise. The weakness is a classic input validation flaw, classified as CWE\u201179.", "risk_and_exploitability": "The CVSS score of 6.4 indicates moderate severity. The EPSS score is not available, and the vulnerability is not listed in CISA KEV, which limits publicly known exploitation data. The attack requires authenticated access with Contributor or higher permissions; an attacker must create or edit a Post Slider block and supply a malicious block_id value. Once embedded, the script executes in the browsing context of any user who views the page, making the exploitation path straightforward once the required permissions are achieved. Because the flaw is client\u2011side, the risk revolves around compromising users who view affected content rather than direct server\u2011side code execution."}}}}, "created": "2026-04-22T10:30:14.510372+00:00", "updated": "2026-04-22T10:30:14.510393+00:00", "vendors": []}