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{"cveTags": [], "descriptions": [{"lang": "en", "value": "The ShortPixel Image Optimizer \u2013 Optimize Images, Convert WebP & AVIF plugin for WordPress is vulnerable to unauthorized modification of data due to a missing capability check on the 'shortpixel_ajaxRequest' AJAX action in all versions up to, and including, 6.3.4. This makes it possible for authenticated attackers, with Contributor-level access and above, to export and import site options."}], "id": "CVE-2025-11378", "lastModified": "2026-04-15T00:35:42.020", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 5.4, "baseSeverity": "MEDIUM", "confidentialityImpact": "LOW", "integrityImpact": "LOW", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N", "version": "3.1"}, "exploitabilityScore": 2.8, "impactScore": 2.5, "source": "security@wordfence.com", "type": "Secondary"}]}, "published": "2025-10-18T04:16:05.933", "references": [{"source": "security@wordfence.com", "url": "https://github.com/short-pixel-optimizer/shortpixel-image-optimiser/commit/74263060acafbaf63b4a34f339a8b0dc35f2cad9"}, {"source": "security@wordfence.com", "url": "https://plugins.trac.wordpress.org/changeset?sfp_email=&sfph_mail=&reponame=&old=3379473%40shortpixel-image-optimiser&new=3379473%40shortpixel-image-optimiser&sfp_email=&sfph_mail="}, {"source": "security@wordfence.com", "url": "https://research.cleantalk.org/CVE-2025-11378"}, {"source": "security@wordfence.com", "url": "https://www.wordfence.com/threat-intel/vulnerabilities/id/1f7e9eb5-e222-43fa-a14f-b9cbced6b8f5?source=cve"}], "sourceIdentifier": "security@wordfence.com", "vulnStatus": "Deferred", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-862"}], "source": "security@wordfence.com", "type": "Secondary"}]}

{}

{"analysis": {"en": {"generated_at": "2026-04-28T18:39:50.921757+00:00", "value": {"mitigation_remediation": ["Upgrade the ShortPixel Image Optimizer plugin to the latest stable version that includes the missing capability checks.", "Review user accounts and remove unnecessary Contributor-level privileges from users who do not need them, ensuring only trusted accounts retain access.", "Restrict the use of the 'shortpixel_ajaxRequest' endpoint by configuring WordPress role management or a security plugin to block AJAX requests from untrusted roles.", "Proactively monitor site logs for unusual AJAX activity related to the ShortPixel plugin and investigate any suspicious requests."], "summary": {"action": "Immediate Patch", "impact": "Unauthorized configuration modification"}, "threat_synthesis": {"affected_systems": "ShortPixel Image Optimizer \u2013 Optimize Images, Convert WebP & AVIF, all versions up to and including 6.3.4. The flaw can affect any WordPress site that has the plugin installed and employs user roles with Contributor or higher privileges.", "description_and_impact": "The ShortPixel Image Optimizer plugin for WordPress contains a missing capability check on the 'shortpixel_ajaxRequest' AJAX action, which allows an authenticated user with Contributor-level or higher permissions to export and import site options. This capability bypass enables the attacker to modify the plugin\u2019s configuration data, potentially changing image optimization settings.", "risk_and_exploitability": "The CVSS score of 5.4 indicates moderate severity. The EPSS score of <1% suggests a low likelihood of exploitation, and the vulnerability is not listed in the CISA KEV catalog. Attackers need only authenticated access with Contributor or higher roles; the exploitation path involves sending a crafted AJAX request to the plugin\u2019s endpoint. The missing capability check allows the attacker to change configuration via the export/import functions."}}}}, "created": "2025-10-20T13:21:42.420081+00:00", "updated": "2026-04-28T18:45:15.978612+00:00", "vendors": ["shortpixel", "shortpixel$PRODUCT$image_optimizer", "shortpixel$PRODUCT$shortpixel_image_optimizer", "wordpress", "wordpress$PRODUCT$wordpress"]}