CVE-2026-41940

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

cve🔗 web.nvd.nist.gov📰️ 116 Media mentions👁 983 Views🌐 WEB

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

Reporter	Title	Published	Views	Family All 181
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	13 Aug 202616:03	–	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 Missing Authentication for Critical Function in Cpanel	23 Jul 202615:42	–	githubexploit
GithubExploit	Exploit for CVE-2026-41940	30 Apr 202608:11	–	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
namecheap	www.namecheap.com/status-updates/ongoing-critical-security-vulnerability-in-cpanel-april-28-2026
docs	www.docs.cpanel.net/release-notes/release-notes
docs	www.docs.wpsquared.com/changelogs/versions/changelog/
support	www.support.cpanel.net/hc/en-us/articles/40073787579671-cPanel-WHM-Security-Update-04-28-2026
vulncheck	www.vulncheck.com/advisories/cpanel-and-whm-authentication-bypass-via-login-flow
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 mint via POST /login using Basic-auth-like payload.	CWE-306
pass	request body	/login	Unauthenticated session mint via POST /login using Basic-auth-like payload.	CWE-306
Authorization	header	/	CRLF injection via Authorization header to inject session fields.	CWE-306
Cookie	header	/scripts2/listaccts	Trigger to promote injected fields into session cache via listaccts.	CWE-306
Cookie	header	/json-api/version	Check WHM authentication bypass by querying json-api/version with a promoted session.	CWE-306
user	body	/json-api/passwd	Set temporary/root password via WHM passwd API as part of exploitation.	CWE-306
password	body	/json-api/passwd	Set temporary/root password via WHM passwd API as part of exploitation.	CWE-306

17 Jun 2026 10:47Current

5.5Medium risk

Vulners AI Score5.5

CVSS 49.3

CVSS 3.19.8

EPSS0.98527

SSVC