Prevent exposure of sensitive user keys by blocking plaintext key access in GetUserKeyV2 handler.

[zeropath-ai-dev]

Summary

• The Vulnerability Description: The user handler previously exposed the sensitive user.Key value in plaintext via the HTTP JSON response, leaving key material unprotected in transit and at rest.
• This Fix: The endpoint response has been updated to block key retrieval and now returns an HTTP 403 Forbidden status with a descriptive error message, preventing any disclosure of the key field.
• The Cause of the Issue: The application directly retrieved and sent the user.Key value from the database (and go-cache) without applying encryption or any secure handling, creating a critical risk of sensitive data leakage.
• The Patch Implementation: The insecure JSON response has been replaced; instead of returning the key, the handler returns a fixed failure message and denies all access to key material through this API path.

Vulnerability Details

• Vulnerability Class: Natural Language Rule Violation
• Severity: 0.0
• Affected File: owasp-top10-2016-mobile/m5/panda_zap/server/routes/user.go
• Vulnerable Lines: 103-111

Code Snippets

diff --git a/owasp-top10-2016-mobile/m5/panda_zap/server/routes/user.go b/owasp-top10-2016-mobile/m5/panda_zap/server/routes/user.go
index 9b5c2676..8b3eae98 100644
--- a/owasp-top10-2016-mobile/m5/panda_zap/server/routes/user.go
+++ b/owasp-top10-2016-mobile/m5/panda_zap/server/routes/user.go
@@ -108,7 +108,7 @@ func (es *EchoServer) GetUserKeyV2(c echo.Context) error {
 
 	es.Logger.Info(fmt.Sprintf("User '%s' key found in the database", username))
 
-	return c.JSON(http.StatusOK, keyToBeReturned)
+	return c.JSON(http.StatusForbidden, map[string]string{"result": "fail", "message": "Key retrieval is not supported"})
 }
 
 // UpdateUserMessages attempts to update messages from a given user.

How to Modify the Patch

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Manually Modify the Files

# Checkout created branch:
git checkout zvuln_fix_natural_language_rule_violation_1754368680723756

# if vscode is installed run (or use your favorite editor / IDE):
code owasp-top10-2016-mobile/m5/panda_zap/server/routes/user.go

# Add, commit, and push changes:
git add -A
git commit -m "Update generated patch with x, y, and z changes."
git push zvuln_fix_natural_language_rule_violation_1754368680723756