{"schemaVersion":3,"id":"CVE-2026-15459","aliases":[],"status":"published","duplicateOf":null,"title":null,"description":"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 — the default state after installation — 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 — 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.","dates":{"published":"2026-08-06T04:26:51.990Z","modified":"2026-08-06T14:53:08.126Z","reserved":null,"kevAdded":[],"kevDue":[]},"cvss":{"headline":{"score":8.1,"severity":"high","version":"3.1","versionLabel":"v3.1","source":"CVE.org","vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H","computed":false,"selection":"backend-summary"},"metrics":[{"version":"3.1","versionLabel":"v3.1","source":"CVE.org","score":8.1,"severity":"high","vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H","exploitability":null,"impact":null,"computed":false},{"version":"3.1","versionLabel":"v3.1","source":"NVD","score":8.1,"severity":"high","vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H","exploitability":null,"impact":null,"computed":false},{"version":"3.1","versionLabel":"v3.1","source":"wordfence","score":8.1,"severity":"high","vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H","exploitability":null,"impact":null,"computed":false}]},"epss":{"probability":0.00868,"percentile":0.58069,"severity":"low","asOf":"2026-10-19T00:00:00.000Z","change":{"pp":0.358,"baselineDate":"2026-09-19T00:00:00.000Z","baselineScore":0.0051},"history":[{"date":"2026-09-14T00:00:00.000Z","score":0.0051,"percentile":null},{"date":"2026-09-15T00:00:00.000Z","score":0.0051,"percentile":null},{"date":"2026-09-16T00:00:00.000Z","score":0.0051,"percentile":null},{"date":"2026-09-17T00:00:00.000Z","score":0.0051,"percentile":null},{"date":"2026-09-18T00:00:00.000Z","score":0.0051,"percentile":null},{"date":"2026-09-19T00:00:00.000Z","score":0.0051,"percentile":null},{"date":"2026-09-20T00:00:00.000Z","score":0.0051,"percentile":null},{"date":"2026-09-21T00:00:00.000Z","score":0.0051,"percentile":null},{"date":"2026-09-22T00:00:00.000Z","score":0.0051,"percentile":null},{"date":"2026-09-23T00:00:00.000Z","score":0.0051,"percentile":null},{"date":"2026-09-24T00:00:00.000Z","score":0.00868,"percentile":null},{"date":"2026-09-25T00:00:00.000Z","score":0.00868,"percentile":null},{"date":"2026-09-26T00:00:00.000Z","score":0.00868,"percentile":null},{"date":"2026-09-27T00:00:00.000Z","score":0.00868,"percentile":null},{"date":"2026-09-28T00:00:00.000Z","score":0.00868,"percentile":null},{"date":"2026-09-29T00:00:00.000Z","score":0.00868,"percentile":null},{"date":"2026-09-30T00:00:00.000Z","score":0.00868,"percentile":null},{"date":"2026-10-01T00:00:00.000Z","score":0.00868,"percentile":null},{"date":"2026-10-02T00:00:00.000Z","score":0.00868,"percentile":null},{"date":"2026-10-03T00:00:00.000Z","score":0.00868,"percentile":null},{"date":"2026-10-04T00:00:00.000Z","score":0.00868,"percentile":null},{"date":"2026-10-05T00:00:00.000Z","score":0.00868,"percentile":null},{"date":"2026-10-06T00:00:00.000Z","score":0.00868,"percentile":null},{"date":"2026-10-07T00:00:00.000Z","score":0.00868,"percentile":null},{"date":"2026-10-08T00:00:00.000Z","score":0.00868,"percentile":null},{"date":"2026-10-09T00:00:00.000Z","score":0.00868,"percentile":null},{"date":"2026-10-10T00:00:00.000Z","score":0.00868,"percentile":null},{"date":"2026-10-11T00:00:00.000Z","score":0.00868,"percentile":null},{"date":"2026-10-12T00:00:00.000Z","score":0.00868,"percentile":null},{"date":"2026-10-13T00:00:00.000Z","score":0.00868,"percentile":null},{"date":"2026-10-14T00:00:00.000Z","score":0.00868,"percentile":null},{"date":"2026-10-15T00:00:00.000Z","score":0.00868,"percentile":null},{"date":"2026-10-16T00:00:00.000Z","score":0.00868,"percentile":null},{"date":"2026-10-17T00:00:00.000Z","score":0.00868,"percentile":null},{"date":"2026-10-18T00:00:00.000Z","score":0.00868,"percentile":null},{"date":"2026-10-19T00:00:00.000Z","score":0.00868,"percentile":0.58069}],"last30":[{"date":"2026-09-19T00:00:00.000Z","score":0.0051,"percentile":null},{"date":"2026-09-20T00:00:00.000Z","score":0.0051,"percentile":null},{"date":"2026-09-21T00:00:00.000Z","score":0.0051,"percentile":null},{"date":"2026-09-22T00:00:00.000Z","score":0.0051,"percentile":null},{"date":"2026-09-23T00:00:00.000Z","score":0.0051,"percentile":null},{"date":"2026-09-24T00:00:00.000Z","score":0.00868,"percentile":null},{"date":"2026-09-25T00:00:00.000Z","score":0.00868,"percentile":null},{"date":"2026-09-26T00:00:00.000Z","score":0.00868,"percentile":null},{"date":"2026-09-27T00:00:00.000Z","score":0.00868,"percentile":null},{"date":"2026-09-28T00:00:00.000Z","score":0.00868,"percentile":null},{"date":"2026-09-29T00:00:00.000Z","score":0.00868,"percentile":null},{"date":"2026-09-30T00:00:00.000Z","score":0.00868,"percentile":null},{"date":"2026-10-01T00:00:00.000Z","score":0.00868,"percentile":null},{"date":"2026-10-02T00:00:00.000Z","score":0.00868,"percentile":null},{"date":"2026-10-03T00:00:00.000Z","score":0.00868,"percentile":null},{"date":"2026-10-04T00:00:00.000Z","score":0.00868,"percentile":null},{"date":"2026-10-05T00:00:00.000Z","score":0.00868,"percentile":null},{"date":"2026-10-06T00:00:00.000Z","score":0.00868,"percentile":null},{"date":"2026-10-07T00:00:00.000Z","score":0.00868,"percentile":null},{"date":"2026-10-08T00:00:00.000Z","score":0.00868,"percentile":null},{"date":"2026-10-09T00:00:00.000Z","score":0.00868,"percentile":null},{"date":"2026-10-10T00:00:00.000Z","score":0.00868,"percentile":null},{"date":"2026-10-11T00:00:00.000Z","score":0.00868,"percentile":null},{"date":"2026-10-12T00:00:00.000Z","score":0.00868,"percentile":null},{"date":"2026-10-13T00:00:00.000Z","score":0.00868,"percentile":null},{"date":"2026-10-14T00:00:00.000Z","score":0.00868,"percentile":null},{"date":"2026-10-15T00:00:00.000Z","score":0.00868,"percentile":null},{"date":"2026-10-16T00:00:00.000Z","score":0.00868,"percentile":null},{"date":"2026-10-17T00:00:00.000Z","score":0.00868,"percentile":null},{"date":"2026-10-18T00:00:00.000Z","score":0.00868,"percentile":null},{"date":"2026-10-19T00:00:00.000Z","score":0.00868,"percentile":0.58069}]},"kev":{"state":"not-listed","entries":[],"listedCount":0,"totalCatalogs":3,"catalogs":[{"source":"cisa","label":"CISA","listed":false,"entry":null},{"source":"enisa","label":"ENISA","listed":false,"entry":null},{"source":"circl","label":"CIRCL","listed":false,"entry":null}]},"ransomware":{"state":"none-recorded","sources":[]},"exploits":[],"exploitCount":0,"weaknesses":[{"id":"CWE-287","name":"Improper Authentication","description":"When an actor claims to have a given identity, the product does not prove or insufficiently proves that the claim is correct.","type":"weakness","status":"Draft","abstraction":"Class","likelihoodOfExploit":"High","url":"https://cwe.mitre.org/data/definitions/287.html"}],"affected":[{"vendor":"wordpress","product":"wpmudev-updates","name":"WPMU DEV Dashboard","label":"wpmudev-updates","ecosystem":null,"cpePart":"a","purl":null,"purlType":null,"versions":[{"text":"≤ 5.0.0 (fixed in 5.0.1)","noFixRecorded":false,"fixedIn":"5.0.1"}],"versionsText":"≤ 5.0.0 (fixed in 5.0.1)","eol":null,"hubHref":null},{"vendor":"wpmudev","product":"wpmu dev dashboard","name":"WPMU DEV Dashboard","label":"wpmu dev dashboard","ecosystem":null,"cpePart":"a","purl":null,"purlType":null,"versions":[{"text":"≤ 5.0.0","noFixRecorded":false,"fixedIn":null}],"versionsText":"≤ 5.0.0","eol":null,"hubHref":"/vendor/wpmudev/wpmu_dev_dashboard"}],"affectedCount":2,"eol":{"hasEol":false,"count":0},"references":[{"url":"https://www.wordfence.com/threat-intel/vulnerabilities/id/75c2b82e-cf1c-4db2-811c-82d05c6a1212?source=cve","label":"www.wordfence.com/threat-intel/vulnerabilities/id/75c2b82e-cf1c-4db2-811c-82d05c6a1212?source=cve","hostname":"www.wordfence.com","tags":[]},{"url":"https://wpmudev.com/project/wpmu-dev-dashboard/#changelog_all","label":"wpmudev.com/project/wpmu-dev-dashboard/","hostname":"wpmudev.com","tags":[]},{"url":"https://www.wordfence.com/threat-intel/vulnerabilities/id/75c2b82e-cf1c-4db2-811c-82d05c6a1212","label":"www.wordfence.com/threat-intel/vulnerabilities/id/75c2b82e-cf1c-4db2-811c-82d05c6a1212","hostname":"www.wordfence.com","tags":["Vendor Advisory"]}],"lineage":{"upstream":[],"downstream":[],"duplicates":[],"related":[]},"timeline":[{"kind":"published","date":"2026-08-06T04:26:51.990Z","label":"Published","detail":"Vulnerability first disclosed.","source":null},{"kind":"modified","date":"2026-08-06T14:53:08.126Z","label":"Last modified","detail":"Vulnerability information updated.","source":null}],"risk":{"score":33,"level":"medium","profile":"Default","thresholds":{"critical":75,"high":50,"medium":25,"low":10}},"meta":{"dataAsOf":"2026-10-20T01:36:26.125Z","stale":false,"partial":false}}