{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-15459", "assignerOrgId": "b15e7b5b-3da4-40ae-a43c-f7aa60e62599", "state": "PUBLISHED", "assignerShortName": "Wordfence", "dateReserved": "2026-07-10T20:11:30.150Z", "datePublished": "2026-08-06T04:26:51.990Z", "dateUpdated": "2026-08-06T04:26:51.990Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "b15e7b5b-3da4-40ae-a43c-f7aa60e62599", "shortName": "Wordfence", "dateUpdated": "2026-08-06T04:26:51.990Z"}, "affected": [{"vendor": "wpmudev", "product": "WPMU DEV Dashboard", "versions": [{"version": "0", "status": "affected", "lessThanOrEqual": "5.0.0", "versionType": "semver"}], "defaultStatus": "unaffected"}], "descriptions": [{"lang": "en", "value": "The WPMU DEV Dashboard plugin for WordPress is vulnerable to Authentication Bypass in all versions up to, and including, 5.0.0. On sites not yet connected to the WPMU DEV Hub \u2014 the default state after installation \u2014 the site API key that keys the WDP-AUTH request signature is empty, making the signature verified by validate_hash() trivially forgeable; version 5.0.0 additionally removed the replay check in validate_nonce(), and the remote handler is bound to the public init hook with no capability check. This makes it possible for unauthenticated attackers to invoke privileged Hub actions \u2014 including installing and activating a plugin from an attacker-supplied URL (resulting in remote code execution), deleting plugins and themes, upgrading WordPress core, or logging in as an administrator via SSO. Sites connected to a WPMU DEV account, which have a non-empty 64-character API key, are not affected."}], "title": "WPMU DEV Dashboard <= 5.0.0 - Authentication Bypass to Arbitrary Plugin Installation (Remote Code Execution) via Forged WDP_AUTH HMAC on ?wpmudev-hub= Endpoint", "references": [{"url": "https://www.wordfence.com/threat-intel/vulnerabilities/id/75c2b82e-cf1c-4db2-811c-82d05c6a1212?source=cve"}, {"url": "https://wpmudev.com/project/wpmu-dev-dashboard/#changelog_all"}], "problemTypes": [{"descriptions": [{"lang": "en", "description": "CWE-287 Improper Authentication", "cweId": "CWE-287", "type": "CWE"}]}], "metrics": [{"cvssV3_1": {"version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H", "baseScore": 8.1, "baseSeverity": "HIGH"}}], "credits": [{"lang": "en", "type": "finder", "value": "Austin Ginder"}], "timeline": [{"time": "2026-08-03T16:13:12.000Z", "lang": "en", "value": "Vendor Notified"}, {"time": "2026-08-05T16:25:27.000Z", "lang": "en", "value": "Disclosed"}]}}}

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