CVE-2026-41940

🗓️ 29 Apr 2026 15:10:37Reported by VulnCheckType

cve🔗 web.nvd.nist.gov📰️ 112 Media mentions👁 476 Views🌐 WEB

Authentication bypass in cPanel login flow allows unauthenticated remote access on older versions.

Reporter	Title	Published	Views	Family All 88
GithubExploit	Exploit for Missing Authentication for Critical Function in Cpanel	1 May 202616:27	–	githubexploit
GithubExploit	Exploit for Missing Authentication for Critical Function in Cpanel	6 Jun 202612:49	–	githubexploit
GithubExploit	Exploit for Missing Authentication for Critical Function in Cpanel	27 May 202600:16	–	githubexploit
GithubExploit	Exploit for Missing Authentication for Critical Function in Cpanel	8 May 202614:05	–	githubexploit
GithubExploit	indo-cpanel-exploit	26 May 202619:59	–	githubexploit
GithubExploit	Exploit for Missing Authentication for Critical Function in Cpanel	5 May 202623:39	–	githubexploit
GithubExploit	Exploit for CVE-2026-41940	30 Apr 202617:08	–	githubexploit
GithubExploit	Exploit for CVE-2026-41940	30 Apr 202608:11	–	githubexploit
GithubExploit	Exploit for Missing Authentication for Critical Function in Cpanel	1 May 202612:09	–	githubexploit
GithubExploit	Exploit for Missing Authentication for Critical Function in Cpanel	1 May 202601:34	–	githubexploit

NVD

Vulners

CNA

Node

cpanel cpanelRange11.40–86.0.41

cpanel cpanelRange88.0.0–110.0.97

cpanel cpanelRange112.0.0–118.0.63

cpanel cpanelRange120.0.0–124.0.35

cpanel cpanelRange126.0.1–126.0.54

cpanel cpanelRange128.0.0–130.0.19

cpanel cpanelRange132.0.0–132.0.29

cpanel cpanelRange134.0.0–134.0.20

cpanel cpanelRange136.0.0–136.0.5

Node

cpanel whmRange11.40–86.0.41

cpanel whmRange88.0.0–110.0.97

cpanel whmRange112.0.0–118.0.63

cpanel whmRange120.0.0–124.0.35

cpanel whmRange126.0.1–126.0.54

cpanel whmRange128.0.0–130.0.19

cpanel whmRange132.0.0–132.0.29

cpanel whmRange134.0.0–134.0.20

cpanel whmRange136.0.0–136.0.5

Node

cpanel wp_squaredRange<136.1.7wordpress

[
  {
    "defaultStatus": "affected",
    "vendor": "WebPros",
    "product": "cPanel",
    "versions": [
      {
        "status": "affected",
        "version": "11.40.0.0",
        "versionType": "custom",
        "lessThan": "11.86.0.41"
      },
      {
        "status": "affected",
        "version": "11.88.0.0",
        "versionType": "custom",
        "lessThan": "11.94.0.28"
      },
      {
        "status": "affected",
        "version": "11.96.0.0",
        "versionType": "custom",
        "lessThan": "11.102.0.39"
      },
      {
        "status": "affected",
        "version": "11.104.0.0",
        "versionType": "custom",
        "lessThan": "11.110.0.97"
      },
      {
        "status": "affected",
        "version": "11.112.0.0",
        "versionType": "custom",
        "lessThan": "11.118.0.63"
      },
      {
        "status": "affected",
        "version": "11.120.0.0",
        "versionType": "custom",
        "lessThan": "11.124.0.35"
      },
      {
        "status": "affected",
        "version": "11.126.0.0",
        "versionType": "custom",
        "lessThan": "11.126.0.54"
      },
      {
        "status": "affected",
        "version": "11.128.0.0",
        "versionType": "custom",
        "lessThan": "11.130.0.19"
      },
      {
        "status": "affected",
        "version": "11.132.0.0",
        "versionType": "custom",
        "lessThan": "11.132.0.29"
      },
      {
        "status": "affected",
        "version": "11.134.0.0",
        "versionType": "custom",
        "lessThan": "11.134.0.20"
      },
      {
        "status": "affected",
        "version": "11.136.0.0",
        "versionType": "custom",
        "lessThan": "11.136.0.5"
      }
    ]
  },
  {
    "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",
        "versionType": "custom",
        "lessThan": "11.86.0.41"
      },
      {
        "status": "affected",
        "version": "11.88.0.0",
        "versionType": "custom",
        "lessThan": "11.94.0.28"
      },
      {
        "status": "affected",
        "version": "11.96.0.0",
        "versionType": "custom",
        "lessThan": "11.102.0.39"
      },
      {
        "status": "affected",
        "version": "11.104.0.0",
        "versionType": "custom",
        "lessThan": "11.110.0.97"
      },
      {
        "status": "affected",
        "version": "11.112.0.0",
        "versionType": "custom",
        "lessThan": "11.118.0.63"
      },
      {
        "status": "affected",
        "version": "11.120.0.0",
        "versionType": "custom",
        "lessThan": "11.124.0.35"
      },
      {
        "status": "affected",
        "version": "11.126.0.0",
        "versionType": "custom",
        "lessThan": "11.126.0.54"
      },
      {
        "status": "affected",
        "version": "11.128.0.0",
        "versionType": "custom",
        "lessThan": "11.130.0.19"
      },
      {
        "status": "affected",
        "version": "11.132.0.0",
        "versionType": "custom",
        "lessThan": "11.132.0.29"
      },
      {
        "status": "affected",
        "version": "11.134.0.0",
        "versionType": "custom",
        "lessThan": "11.134.0.20"
      },
      {
        "status": "affected",
        "version": "11.136.0.0",
        "versionType": "custom",
        "lessThan": "11.136.0.5"
      }
    ]
  }
]

Source	Link
support	www.support.cpanel.net/hc/en-us/articles/40073787579671-cPanel-WHM-Security-Update-04-28-2026
docs	www.docs.cpanel.net/release-notes/release-notes
vulncheck	www.vulncheck.com/advisories/cpanel-and-whm-authentication-bypass-via-login-flow
docs	www.docs.wpsquared.com/changelogs/versions/changelog/
namecheap	www.namecheap.com/status-updates/ongoing-critical-security-vulnerability-in-cpanel-april-28-2026
labs	www.labs.watchtowr.com/the-internet-is-falling-down-falling-down-falling-down-cpanel-whm-authentication-bypass-cve-2026-41940/
cisa	www.cisa.gov/known-exploited-vulnerabilities-catalog
bleepingcomputer	www.bleepingcomputer.com/news/security/critrical-cpanel-flaw-mass-exploited-in-sorry-ransomware-attacks/
github	www.github.com/watchtowrlabs/watchTowr-vs-cPanel-WHM-AuthBypass-to-RCE.py

Parameter	Position	Path	Description	CWE
user	request body	/login	Unauthenticated session minting via login to obtain a whostmgrsession cookie for exploit chain.	CWE-306
pass	request body	/login	Unauthenticated session minting via login to obtain a whostmgrsession cookie for exploit chain.	CWE-306
Authorization	header	/	CRLF injection in Basic-auth header to inject payload into cpsrvd session handling.	CWE-306
user	path	/cpsess<token>/json-api/passwd	WHM API passwd call to set a temporary root password for RCE.	CWE-306
password	path	/cpsess<token>/json-api/passwd	WHM API passwd call to set a temporary root password for RCE.	CWE-306

17 Jun 2026 10:47Current

5.5Medium risk

Vulners AI Score5.5

CVSS 49.3

CVSS 3.19.8

EPSS0.981

SSVC