{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-97278", "assignerOrgId": "21595511-bba5-4825-b968-b78d1f9984a3", "state": "PUBLISHED", "assignerShortName": "Patchstack", "dateReserved": "2026-09-24T10:23:19.165Z", "datePublished": "2026-10-14T12:08:26.651Z", "dateUpdated": "2026-10-14T12:08:26.651Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "21595511-bba5-4825-b968-b78d1f9984a3", "shortName": "Patchstack", "dateUpdated": "2026-10-14T12:08:26.651Z"}, "title": "WordPress Polylang plugin <= 3.8.9 - PHP Object Injection vulnerability", "datePublic": "2026-10-12T11:16:59.000Z", "descriptions": [{"lang": "en", "value": "Deserialization of Untrusted Data vulnerability in WP SYNTEX Polylang polylang allows Object Injection.This issue affects Polylang: from n/a through 3.8.9.", "supportingMedia": [{"type": "text/html", "base64": false, "value": "Deserialization of Untrusted Data vulnerability in WP SYNTEX Polylang polylang allows Object Injection.<p>This issue affects Polylang: from n/a through 3.8.9.</p>"}]}], "affected": [{"vendor": "WP SYNTEX", "product": "Polylang", "packageName": "polylang", "collectionURL": "https://wordpress.org/plugins", "defaultStatus": "unaffected", "versions": [{"version": "0", "versionType": "custom", "status": "affected", "lessThanOrEqual": "3.8.9", "changes": [{"at": "3.8.10", "status": "unaffected"}]}]}], "references": [{"url": "https://patchstack.com/database/wordpress/plugin/polylang/vulnerability/wordpress-polylang-plugin-3-8-9-php-object-injection-vulnerability?_s_id=cve", "tags": ["vdb-entry"]}], "credits": [{"lang": "en", "value": "Ananda Dhakal (Patchstack)", "type": "finder"}], "metrics": [{"format": "CVSS", "scenarios": [{"lang": "en", "value": "GENERAL"}], "cvssV3_1": {"version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H", "baseScore": 7.2, "baseSeverity": "HIGH", "attackVector": "NETWORK", "attackComplexity": "LOW", "privilegesRequired": "HIGH", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "availabilityImpact": "HIGH"}}], "problemTypes": [{"descriptions": [{"cweId": "CWE-502", "description": "Deserialization of Untrusted Data", "lang": "en", "type": "CWE"}]}], "impacts": [{"capecId": "CAPEC-586", "descriptions": [{"lang": "en", "value": "Object Injection"}]}], "solutions": [{"lang": "en", "value": "Update the WordPress Polylang plugin to the latest available version (at least 3.8.10).", "supportingMedia": [{"type": "text/html", "base64": false, "value": "Update the WordPress Polylang plugin to the latest available version (at least 3.8.10)."}]}], "tags": ["x_open-source"]}}}

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{"affected": [{"affectedData": [{"collectionURL": "https://wordpress.org/plugins", "defaultStatus": "unaffected", "packageName": "polylang", "product": "Polylang", "vendor": "WP SYNTEX", "versions": [{"changes": [{"at": "3.8.10", "status": "unaffected"}], "lessThanOrEqual": "3.8.9", "status": "affected", "version": "0", "versionType": "custom"}]}], "source": "audit@patchstack.com"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "Deserialization of Untrusted Data vulnerability in WP SYNTEX Polylang polylang allows Object Injection.This issue affects Polylang: from n/a through 3.8.9."}], "id": "CVE-2026-97278", "lastModified": "2026-10-14T13:17:28.707", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 7.2, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "HIGH", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H", "version": "3.1"}, "exploitabilityScore": 1.2, "impactScore": 5.9, "source": "audit@patchstack.com", "type": "Secondary"}]}, "published": "2026-10-14T13:17:28.707", "references": [{"source": "audit@patchstack.com", "url": "https://patchstack.com/database/wordpress/plugin/polylang/vulnerability/wordpress-polylang-plugin-3-8-9-php-object-injection-vulnerability?_s_id=cve"}], "sourceIdentifier": "audit@patchstack.com", "vulnStatus": "Received", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-502"}], "source": "audit@patchstack.com", "type": "Primary"}]}

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