PatchSiren cyber security CVE debrief
CVE-2026-0650 OpenFlagr CVE debrief
CVE-2026-0650 is an authentication bypass vulnerability in OpenFlagr versions prior to and including 1.1.18. The vulnerability allows crafted requests to bypass authentication and access protected API endpoints without valid credentials. This may allow modification of feature flags and export of sensitive data. Affected users should apply patches and review their inventory.
- Vendor
- OpenFlagr
- Product
- Flagr
- CVSS
- CRITICAL 9.3
- CISA KEV
- Not listed in stored evidence
- Original CVE published
- 2026-01-07
- Original CVE updated
- 2026-07-14
- Advisory published
- 2026-01-07
- Advisory updated
- 2026-07-14
Who should care
Users of OpenFlagr versions prior to 1.1.19 should apply the patch to prevent authentication bypass attacks. Security teams should review their inventory of OpenFlagr instances and ensure they are running a patched version. Operators and platform administrators should prioritize patching and monitor for suspicious activity.
Technical summary
The authentication bypass vulnerability in OpenFlagr is due to improper handling of path normalization in the whitelist logic of the HTTP middleware. This allows an attacker to craft requests that can bypass authentication and access protected API endpoints without valid credentials. The vulnerability has a CVSS score of 9.3 and is considered critical. Affected users should apply patches and review their inventory. The CVE record was published on 2026-01-07T12:17:07.727Z and last modified on 2026-07-14T16:16:43.207Z. The NVD entry is currently Deferred. Evidence is limited to CVE and NVD details. Defenders should verify OpenFlagr version and patch status, and review compensating controls for exposed systems while remediation is scheduled and verified.
Defensive priority
High
Recommended defensive actions
- Apply the patch to upgrade OpenFlagr to version 1.1.19 or later
- Review inventory of OpenFlagr instances and ensure they are running a patched version
- Monitor for suspicious activity on OpenFlagr instances
- Confirm whether affected product deployments exist in managed environments and assign an owner for follow-up
- Review compensating controls for exposed systems while remediation is scheduled and verified
- Check relevant monitoring, detection, and logs for exposed assets that need extra review
- Track exceptions, retest remediated assets, and close the item only after evidence is documented
Evidence notes
The CVE record was published on 2026-01-07T12:17:07.727Z and last modified on 2026-07-14T16:16:43.207Z. The NVD entry is currently Deferred. Evidence is limited to CVE and NVD details. Defenders should verify OpenFlagr version and patch status.
Official resources
AI-assisted PatchSiren debrief based on the supplied source corpus. The CVE record was published on 2026-01-07T12:17:07.727Z and has not been modified since then. The NVD entry is currently Deferred.