CVE-2025-30206

The Dpanel service contains a hardcoded JWT secret in its default configuration, allowing attackers to generate valid JWT tokens and compromise the host machine.

Details

The Dpanel service, when initiated using its default configuration, includes a hardcoded JWT secret embedded directly within its source code. This security flaw allows attackers to analyze the source code, discover the embedded secret, and craft legitimate JWT tokens. By forging these tokens, an attacker can successfully bypass authentication mechanisms, impersonate privileged users, and gain unauthorized administrative access. Consequently, this enables full control over the host machine, potentially leading to severe consequences such as sensitive data exposure, unauthorized command execution, privilege escalation, or further lateral movement within the network environment. It is recommended to replace the hardcoded secret with a securely generated value and load it from secure configuration storage to mitigate this vulnerability.

PoC

The core code snippet is shown below:

import jwt

def generate_jwt(appname):

    payload = {
        "SECRET_KEY"："SECRET_VALUE",
    }
    print("appname:", appname)
    print("payload:", str(payload))
    token = jwt.encode(payload, SECRET_KEY.format(APP_NAME=appname), algorithm="HS256")
    return token

appname = "SECRET_KEY"
token = generate_jwt(appname)
print("url token:", token)

Attackers who successfully exploit this vulnerability can write arbitrary files to the host machine's file system, and all users with Dpanel versions less than 1.6.1 are affected.

CVE-2025-30206 has a CVSS score of 9.8 (Critical). The vector is network-reachable, no privileges required, and no user interaction. A CVSS score reflects the worst-case severity of the vulnerability, not your specific exposure. Whether this affects your application depends on whether the vulnerable code is present and reachable in your environment. A fixed version is available (1.6.1); upgrading removes the vulnerable code path.

Kodem intelligence

1. What is CVE-2025-30206? CVE-2025-30206 is a critical-severity security vulnerability in github.com/donknap/dpanel (go), affecting versions < 1.6.1. It is fixed in 1.6.1.
2. How severe is CVE-2025-30206? CVE-2025-30206 has a CVSS score of 9.8 (Critical). This score reflects the worst-case severity of the vulnerability, not your specific exposure. Whether it represents real risk in your environment depends on whether the vulnerable code is present and reachable.
3. Which versions of github.com/donknap/dpanel are affected by CVE-2025-30206? github.com/donknap/dpanel (go) versions < 1.6.1 is affected.
4. Is there a fix for CVE-2025-30206? Yes. CVE-2025-30206 is fixed in 1.6.1. Upgrade to this version or later.
5. Is CVE-2025-30206 exploitable, and should I be worried? Whether CVE-2025-30206 is exploitable in your environment depends on whether the vulnerable code is present and reachable. A CVSS score is a worst-case rating; it does not account for your specific deployment, configuration, or usage patterns. Kodem, an Intelligent Application Security platform, uses runtime intelligence to show which vulnerabilities actually execute in production, so you can focus on the ones that represent real risk. Get a demo
6. What actually determines whether CVE-2025-30206 is exploitable, and how bad it is? Exploitability and impact are not fixed properties of a CVE. They depend on runtime truth: whether the vulnerable code is present, reachable, and actually executes in your application. A high CVSS score on a dependency that never runs is not the same as real risk. Kodem, an Intelligent Application Security platform, uses runtime intelligence to reveal which vulnerabilities actually execute in production, so teams prioritize the ones that genuinely matter.
7. How do I fix CVE-2025-30206? Upgrade github.com/donknap/dpanel to 1.6.1 or later.