{"id":"CVE-2026-119977","aliases":[],"cve":{"records":[{"id":"CVE-2026-119977","source":"Wordfence","state":"PUBLISHED","reasons":[],"replacements":[],"disputed":false,"unsupportedWhenAssigned":false,"reserved":"2026-10-30T17:17:35.145Z","published":"2026-10-31T05:33:07.059Z","modified":"2026-11-04T04:56:31.158Z"}],"publishers":[{"name":"Wordfence","role":"CNA","organizationId":"b15e7b5b-3da4-40ae-a43c-f7aa60e62599","modified":"2026-10-31T05:33:07.059Z"},{"name":"CISA-ADP","role":"ADP","organizationId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","modified":"2026-11-04T04:56:31.158Z"}],"references":[{"url":"https://www.wordfence.com/threat-intel/vulnerabilities/id/4b4da0cf-d9f4-47c4-a0e8-6c4dc5a6f250?source=cve","tags":[],"source":"Wordfence"},{"url":"https://core.trac.wordpress.org/browser/tags/7.1.3/src/wp-admin/includes/class-wp-upgrader.php#L378","tags":[],"source":"Wordfence"},{"url":"https://core.trac.wordpress.org/browser/tags/7.1.3/src/wp-admin/includes/class-core-upgrader.php#L162","tags":[],"source":"Wordfence"},{"url":"https://core.trac.wordpress.org/browser/tags/7.1.3/src/wp-admin/includes/update-core.php#L1549","tags":[],"source":"Wordfence"},{"url":"https://core.trac.wordpress.org/browser/tags/7.1.3/src/wp-admin/setup-config.php#L282","tags":[],"source":"Wordfence"},{"url":"https://core.trac.wordpress.org/browser/tags/7.1.4/src/wp-admin/includes/class-wp-upgrader.php#L346","tags":[],"source":"Wordfence"},{"url":"https://core.trac.wordpress.org/browser/tags/7.1.4/src/wp-admin/includes/update-core.php#L1545","tags":[],"source":"Wordfence"},{"url":"https://wordpress.org/news/2026/10/wordpress-7-1-4/","tags":[],"source":"Wordfence"},{"url":"https://www.wordfence.com/threat-intel/vulnerabilities/wordpress-core/wordpress-core-470-713-unauthenticated-upgrade-window-staged-installer-remote-code-execution","tags":["third-party-advisory"],"source":"CISA-ADP"},{"url":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-119977","tags":["government-resource"],"source":"CISA-ADP"}],"weaknesses":[{"id":"CWE-367","description":"CWE-367 Time-of-check Time-of-use (TOCTOU) Race Condition","source":"Wordfence"}],"applicability":[],"prioritization":[{"source":"CISA-ADP","type":"SSVC","role":"CISA Coordinator","timestamp":"2026-11-03T00:00:00+00:00","decisions":[{"name":"Exploitation","value":"active"},{"name":"Automatable","value":"no"},{"name":"Technical Impact","value":"total"}]}]},"title":"WordPress Core 4.7.0 - 7.1.3 - Unauthenticated Upgrade-Window Staged-Installer Remote Code Execution","titleSource":"Wordfence","descriptionSource":"Wordfence","description":"WordPress Core is vulnerable to Remote Code Execution in versions 4.7 through 7.1.3. This is due to predictable, web-accessible staging paths used during full-package core upgrades. This makes it possible for unauthenticated attackers to execute code on the server during the upgrade window.","score":8.1,"severity":"high","published":"2026-10-31T05:33:07.059Z","modified":"2026-11-04T04:56:31.158Z","withdrawn":false,"knownExploited":true,"affected":[],"products":[{"vendor":"WordPress Foundation","name":"WordPress","platforms":[],"versions":[{"version":"4.7.0","status":"affected","lessThanOrEqual":"4.7.38","versionType":"semver"},{"version":"4.8.0","status":"affected","lessThanOrEqual":"4.8.33","versionType":"semver"},{"version":"4.9.0","status":"affected","lessThanOrEqual":"4.9.34","versionType":"semver"},{"version":"5.0.0","status":"affected","lessThanOrEqual":"5.0.30","versionType":"semver"},{"version":"5.1.0","status":"affected","lessThanOrEqual":"5.1.27","versionType":"semver"},{"version":"5.2.0","status":"affected","lessThanOrEqual":"5.2.29","versionType":"semver"},{"version":"5.3.0","status":"affected","lessThanOrEqual":"5.3.26","versionType":"semver"},{"version":"5.4.0","status":"affected","lessThanOrEqual":"5.4.24","versionType":"semver"},{"version":"5.5.0","status":"affected","lessThanOrEqual":"5.5.23","versionType":"semver"},{"version":"5.6.0","status":"affected","lessThanOrEqual":"5.6.22","versionType":"semver"},{"version":"5.7.0","status":"affected","lessThanOrEqual":"5.7.20","versionType":"semver"},{"version":"5.8.0","status":"affected","lessThanOrEqual":"5.8.18","versionType":"semver"},{"version":"5.9.0","status":"affected","lessThanOrEqual":"5.9.19","versionType":"semver"},{"version":"6.0.0","status":"affected","lessThanOrEqual":"6.0.17","versionType":"semver"},{"version":"6.1.0","status":"affected","lessThanOrEqual":"6.1.15","versionType":"semver"},{"version":"6.2.0","status":"affected","lessThanOrEqual":"6.2.14","versionType":"semver"},{"version":"6.3.0","status":"affected","lessThanOrEqual":"6.3.13","versionType":"semver"},{"version":"6.4.0","status":"affected","lessThanOrEqual":"6.4.13","versionType":"semver"},{"version":"6.5.0","status":"affected","lessThanOrEqual":"6.5.13","versionType":"semver"},{"version":"6.6.0","status":"affected","lessThanOrEqual":"6.6.10","versionType":"semver"},{"version":"6.7.0","status":"affected","lessThanOrEqual":"6.7.10","versionType":"semver"},{"version":"6.8.0","status":"affected","lessThanOrEqual":"6.8.11","versionType":"semver"},{"version":"6.9.0","status":"affected","lessThanOrEqual":"6.9.10","versionType":"semver"},{"version":"7.0.0","status":"affected","lessThanOrEqual":"7.0.7","versionType":"semver"},{"version":"7.1.0","status":"affected","lessThanOrEqual":"7.1.3","versionType":"semver"}],"defaultStatus":"unaffected","cpes":[],"source":"Wordfence","url":"https://www.cve.org/CVERecord?id=CVE-2026-119977"}],"remediation":[],"references":["https://www.wordfence.com/threat-intel/vulnerabilities/id/4b4da0cf-d9f4-47c4-a0e8-6c4dc5a6f250?source=cve","https://core.trac.wordpress.org/browser/tags/7.1.3/src/wp-admin/includes/class-wp-upgrader.php#L378","https://core.trac.wordpress.org/browser/tags/7.1.3/src/wp-admin/includes/class-core-upgrader.php#L162","https://core.trac.wordpress.org/browser/tags/7.1.3/src/wp-admin/includes/update-core.php#L1549","https://core.trac.wordpress.org/browser/tags/7.1.3/src/wp-admin/setup-config.php#L282","https://core.trac.wordpress.org/browser/tags/7.1.4/src/wp-admin/includes/class-wp-upgrader.php#L346","https://core.trac.wordpress.org/browser/tags/7.1.4/src/wp-admin/includes/update-core.php#L1545","https://wordpress.org/news/2026/10/wordpress-7-1-4/","https://www.wordfence.com/threat-intel/vulnerabilities/wordpress-core/wordpress-core-470-713-unauthenticated-upgrade-window-staged-installer-remote-code-execution","https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-119977"],"sources":[{"name":"CVE","id":"CVE-2026-119977","modified":"2026-11-04T04:56:31.158Z","url":"https://www.cve.org/CVERecord?id=CVE-2026-119977"}],"assessments":[{"source":"Wordfence","vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H","score":8.1}],"sourceAffected":[],"observedAt":"2026-11-04T05:07:04.484Z","kev":{"status":"listed","checkedAt":"2026-11-05T07:00:31.683Z","cveID":"CVE-2026-119977","vendorProject":"WordPress","product":"WordPress Core","vulnerabilityName":"WordPress WordPress Core Time-of-check Time-of-use (TOCTOU) Race Condition Vulnerability","dateAdded":"2026-11-03","shortDescription":"WordPress WordPress Core contains a time-of-check time-of-use (TOCTOU) race condition vulnerability that could allow unauthenticated attackers to execute code on the server during the upgrade window. This is due to predictable, web-accessible staging paths used during full-package core upgrades.","requiredAction":"Apply mitigations in accordance with vendor instructions, ensuring compliance with CISA’s BOD 26-04 Prioritizing Security Updates Based on Risk (see URL in Notes) guidance and CISA’s “Forensics Triage Requirements” (see URL in Notes). Follow applicable BOD 26-04 guidance for cloud services or discontinue use of the product if mitigations are unavailable. Stakeholders are responsible for evaluating each asset's internet exposure and ensuring adherence to BOD 26-04 patching guidelines.","dueDate":"2026-11-06","knownRansomwareCampaignUse":"Unknown","forensicTriage":"Yes","notes":"https://wordpress.org/news/2026/10/wordpress-7-1-4 ; https://www.wordfence.com/threat-intel/vulnerabilities/wordpress-core/wordpress-core-470-713-unauthenticated-upgrade-window-staged-installer-remote-code-execution ; BOD 26-04: https://www.cisa.gov/news-events/directives/bod-26-04-prioritizing-security-updates-based-risk ; Forensics Triage Requirements: https://www.cisa.gov/news-events/directives/bod-26-04-implementation-guidance-prioritizing-security-updates-based-risk ; https://nvd.nist.gov/vuln/detail/CVE-2026-119977","cwes":["CWE-367"]},"coverage":[{"source":"NVD","status":"available","checkedAt":"2026-10-31T06:45:36.090Z","attemptedAt":"2026-10-31T06:45:36.090Z"},{"source":"GHSA","status":"available","checkedAt":"2026-10-31T06:45:36.458Z","attemptedAt":"2026-10-31T06:45:36.458Z"},{"source":"EUVD","status":"no-result","checkedAt":"2026-10-31T06:45:36.836Z","attemptedAt":"2026-10-31T06:45:36.836Z"},{"source":"EPSS","status":"no-result","checkedAt":"2026-10-31T06:45:36.089Z","attemptedAt":"2026-10-31T06:45:36.089Z"}],"evidence":[{"source":"NVD","id":"CVE-2026-119977","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-119977","modified":"2026-10-31T06:16:34.550","score":8.1,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H","checkedAt":"2026-10-31T06:45:36.090Z"},{"source":"GitHub Advisory Database","id":"GHSA-p6jj-qrp3-7m4g","url":"https://github.com/advisories/GHSA-p6jj-qrp3-7m4g","modified":"2026-10-31T06:30:35Z","score":8.1,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H","checkedAt":"2026-10-31T06:45:36.458Z"}],"aiSummary":{"text":"WordPress Core versions 4.7.0 to 7.1.3 may be vulnerable due to predictable staging paths during upgrades. Unauthenticated attackers may exploit this weakness. The impact is uncertain.","model":"@cf/meta/llama-3.3-70b-instruct-fp8-fast","generatedAt":"2026-10-31T06:31:10.641Z","sources":[{"name":"CVE","url":"https://www.cve.org/CVERecord?id=CVE-2026-119977"}]}}