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The vulnerability exists within the HTTP middleware’s authentication whitelist logic. It fails to correctly normalize and compare URL paths, allowing an attacker to craft requests with specific path manipulations (such as adding extra slashes, dot segments, or URL-encoded characters) that are not matched against the restricted list but are still routed to protected handlers. This mismatch between the whitelist check and the actual request routing enables unauthorized access to administrative API endpoints, including those for modifying feature flags and exporting configuration data, without presenting any valid authentication credentials.
DailyCVE Form:
Platform: OpenFlagr
Version: <= 1.1.18
Vulnerability: Auth Bypass
Severity: Critical
date: 2026-01-07
Prediction: Patched Available
What Undercode Say:
Analytics:
`curl -s http://target:port/health | grep version`
`curl -v –path-as-is ‘http://target:port//api/v1/flags’`
`./exploit.py –url http://target –endpoint /admin/export`
How Exploit:
Craft malformed paths.
Bypass whitelist validation.
Access admin endpoints.
Protection from this CVE
Update to patched commit.
Implement strict path normalization.
Add secondary auth layer.
Impact:
Unauthorized data access.
Feature flag manipulation.
System compromise.
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Sources:
Reported By: github.com
Extra Source Hub:
Undercode
