GHSA-rwp9-5g7q-73q3
OpenFlagr contains an authentication bypass vulnerability in the HTTP middleware
Packages
| Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|
| Go | github.com/openflagr/flagr | < 0.0.0-20251009103504-fe83dc87aa40 | 0.0.0-20251009103504-fe83dc87aa40 |
Details
As written in the advisory (Markdown source, shown as plain text).
OpenFlagr versions prior to and including 1.1.18 contain an authentication bypass vulnerability in the HTTP middleware. Due to improper handling of path normalization in the whitelist logic, crafted requests can bypass authentication and access protected API endpoints without valid credentials. Unauthorized access may allow modification of feature flags and export of sensitive data.
References
External links from the advisory. They lead to third-party sites.
- https://nvd.nist.gov/vuln/detail/CVE-2026-0650
- https://github.com/openflagr/flagr/commit/fe83dc87aa404a57554aa5839ac450f55c203570
- https://dreyand.rs/code%20review/golang/2026/01/03/0day-speedrun-openflagr-less-1118-authentication-bypass
- https://github.com/openflagr/flagr
- https://github.com/openflagr/flagr/releases/tag/1.1.19
- https://www.vulncheck.com/advisories/openflagr-authentication-bypass-via-prefix-whitelist-path-normalization