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Vulnerabilities

Vulnerability · CVE-2026-0650

OpenFlagr versions prior to and including 1.1.18 contain an authentication bypass vulnerability in the HTTP middleware.

Published Jan 7, 2026 · catalog updated Oct 26, 2026 · OpenFlagr Flagr

Last checked Oct 29, 2026. A connected source was read within the last 7 days.

Check if you run it

No confirmed exploitation is on record for CVE-2026-0650. EPSS is 1.52%. Act only if a listed version of OpenFlagr Flagr is installed.

Gaps on this record

  • No vendor fix or required action is stored. Compare the linked advisory before you change production.
Severity
Critical9.3
Known exploitation
Not in CISA/VulnCheck KEV
EPSS
1.52%
Remediation
Vendor / distro source
Affected products
vendor OpenFlagr Flagr 0 ≤1.1.18

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.

Are you affected?

Enter the version you run. The result uses only the ranges stored on this record.

The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.

  • vendor OpenFlagr Flagr 0 ≤1.1.180 ≤1.1.18

How to fix CVE-2026-0650

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

No confirmed exploitation is on record for CVE-2026-0650. EPSS is 1.52%. Act only if a listed version of OpenFlagr Flagr is installed.

Which versions are affected?

Compare what you have installed with OpenFlagr Flagr 0 ≤1.1.18 0 ≤1.1.18. Compare the installed version with the linked vendor advisory before you change production.

What should an analyst verify?

CWE-306: Missing Authentication for Critical Function; CWE-425: Direct Request (Forced Browsing). EPSS 1.52%. There is no CISA KEV listing. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.

Code

The project this record applies to. Exploit listings stay in References.

Timeline

Detection, updates, and resolution for this record.

  1. Jan 7, 2026 · NIST NVD

    Detected

    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.

  2. Oct 26, 2026 · NIST NVD

    Updated

    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.

Sources

  • CVE.orgVulnerability recordCVE-2026-0650

    Official CVE identifier

    cve.org
  • EUVDVulnerability recordEUVD-2026-1181

    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 val

    euvd.enisa.europa.eu
  • NIST NVDVulnerability recordCVE-2026-0650

    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 val

    nvd.nist.gov

References

Freshness

Last verified in this catalog Oct 29, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.

  • EUVDOct 28, 2026
  • CVE.orgOct 27, 2026
  • NIST NVDOct 27, 2026