CVE-2026-41940

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"baseScore": 9.3, "Automatable": "NOT_DEFINED", "attackVector": "NETWORK", "baseSeverity": "CRITICAL", "valueDensity": "NOT_DEFINED", "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X", "exploitMaturity": "NOT_DEFINED", "providerUrgency": "NOT_DEFINED", "userInteraction": "NONE", "attackComplexity": "LOW", "attackRequirements": "NONE", "privilegesRequired": "NONE", "subIntegrityImpact": "NONE", "vulnIntegrityImpact": "HIGH", "integrityRequirement": "NOT_DEFINED", "modifiedAttackVector": "NOT_DEFINED", "subAvailabilityImpact": "NONE", "vulnAvailabilityImpact": "HIGH", "availabilityRequirement": "NOT_DEFINED", "modifiedUserInteraction": "NOT_DEFINED", "modifiedAttackComplexity": "NOT_DEFINED", "subConfidentialityImpact": "NONE", "vulnConfidentialityImpact": "HIGH", "confidentialityRequirement": "NOT_DEFINED", "modifiedAttackRequirements": "NOT_DEFINED", "modifiedPrivilegesRequired": "NOT_DEFINED", "modifiedSubIntegrityImpact": "NOT_DEFINED", "modifiedVulnIntegrityImpact": "NOT_DEFINED", "vulnerabilityResponseEffort": "NOT_DEFINED", "modifiedSubAvailabilityImpact": "NOT_DEFINED", "modifiedVulnAvailabilityImpact": "NOT_DEFINED", "modifiedSubConfidentialityImpact": "NOT_DEFINED", "modifiedVulnConfidentialityImpact": "NOT_DEFINED"}}]}, "affected": [{"source": "disclosure@vulncheck.com", "affectedData": [{"vendor": "WebPros", "product": "cPanel", "versions": [{"status": "affected", "version": "11.40.0.0", "lessThan": "11.86.0.41", "versionType": "custom"}, {"status": "affected", "version": "11.88.0.0", "lessThan": "11.94.0.28", "versionType": "custom"}, {"status": "affected", "version": "11.96.0.0", "lessThan": "11.102.0.39", "versionType": "custom"}, {"status": "affected", "version": "11.104.0.0", "lessThan": "11.110.0.97", "versionType": "custom"}, {"status": "affected", "version": "11.112.0.0", "lessThan": "11.118.0.63", "versionType": "custom"}, {"status": "affected", "version": "11.120.0.0", "lessThan": "11.124.0.35", "versionType": "custom"}, {"status": "affected", "version": "11.126.0.0", "lessThan": "11.126.0.54", "versionType": "custom"}, {"status": "affected", "version": "11.128.0.0", "lessThan": "11.130.0.19", "versionType": "custom"}, {"status": "affected", "version": "11.132.0.0", "lessThan": "11.132.0.29", "versionType": "custom"}, {"status": "affected", "version": "11.134.0.0", "lessThan": "11.134.0.20", "versionType": "custom"}, {"status": "affected", "version": "11.136.0.0", "lessThan": "11.136.0.5", "versionType": "custom"}], "defaultStatus": "affected"}, {"vendor": "WebPros", "product": "WP Squared", "versions": [{"status": "unaffected", "version": "11.136.1.7", "versionType": "custom"}], "defaultStatus": "affected"}, {"vendor": "WebPros", "product": "WHM", "versions": [{"status": "affected", "version": "11.40.0.0", "lessThan": "11.86.0.41", "versionType": "custom"}, {"status": 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"defaultStatus": "affected"}]}], "published": "2026-04-29T16:16:25.037", "references": [{"url": "https://docs.cpanel.net/release-notes/release-notes", "tags": ["Release Notes"], "source": "disclosure@vulncheck.com"}, {"url": "https://docs.wpsquared.com/changelogs/versions/changelog/#13617", "tags": ["Release Notes"], "source": "disclosure@vulncheck.com"}, {"url": "https://support.cpanel.net/hc/en-us/articles/40073787579671-cPanel-WHM-Security-Update-04-28-2026", "tags": ["Vendor Advisory"], "source": "disclosure@vulncheck.com"}, {"url": "https://www.namecheap.com/status-updates/ongoing-critical-security-vulnerability-in-cpanel-april-28-2026", "tags": ["Third Party Advisory"], "source": "disclosure@vulncheck.com"}, {"url": "https://www.vulncheck.com/advisories/cpanel-and-whm-authentication-bypass-via-login-flow", "tags": ["Third Party Advisory"], "source": "disclosure@vulncheck.com"}, {"url": "https://labs.watchtowr.com/the-internet-is-falling-down-falling-down-falling-down-cpanel-whm-authentication-bypass-cve-2026-41940/", "tags": ["Exploit", "Third Party Advisory"], "source": "af854a3a-2127-422b-91ae-364da2661108"}, {"url": "https://www.bleepingcomputer.com/news/security/critrical-cpanel-flaw-mass-exploited-in-sorry-ransomware-attacks/", "tags": ["Press/Media Coverage"], "source": "af854a3a-2127-422b-91ae-364da2661108"}, {"url": "https://github.com/watchtowrlabs/watchTowr-vs-cPanel-WHM-AuthBypass-to-RCE.py", "tags": ["Exploit", "Third Party Advisory"], "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0"}, {"url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-41940", "tags": ["US Government Resource"], "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0"}], "vulnStatus": "Analyzed", "weaknesses": [{"type": "Secondary", "source": "disclosure@vulncheck.com", "description": [{"lang": "en", "value": "CWE-306"}]}], "descriptions": [{"lang": "en", "value": "cPanel and WHM versions after 11.40 contain an authentication bypass vulnerability in the login flow that allows unauthenticated remote attackers to gain unauthorized access to the control panel."}], "lastModified": "2026-06-17T10:47:13.957", "cisaActionDue": "2026-05-03", "cisaExploitAdd": "2026-04-30", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:a:cpanel:cpanel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "D018D47F-B020-41B1-8755-9197EB8673D3", "versionEndExcluding": "86.0.41", "versionStartIncluding": "11.40"}, {"criteria": "cpe:2.3:a:cpanel:cpanel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "9BF3DBAC-D629-44A9-B102-2D8F82709CA2", "versionEndExcluding": "110.0.97", "versionStartIncluding": "88.0.0"}, {"criteria": "cpe:2.3:a:cpanel:cpanel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "3EEFF12C-11E8-4A5C-9C72-BA1A422A9E72", "versionEndExcluding": "118.0.63", "versionStartIncluding": "112.0.0"}, 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