Incorrect authorization in openshift/ovn-kubernetes
Priority LOW 27CWE-863Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- High
- Impact type
- Security bypass
- Confidentiality · integrity · availability
- Low · Low · Low
- Fix status
- Fixed
Attack profile from CVSS 3.1 · NVD. Fix status from CNA, GitHub and Red Hat. Impact type from CWE-863.
Summary
A vulnerability was found in OVN Kubernetes in versions up to and including 0.3.0 where the Egress Firewall does not reliably apply firewall rules when there is multiple DNS rules. It could lead to potentially lose of confidentiality, integrity or availability of a service.
Why it matters now
EPSS 0.00799 56th percentileScored 2026-11-07
Fix Fixed No fixed version in the sources yet
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | openshift/ovn-kubernetes | All ovn-kubernetes versions up to and including 0.3.0 | — | No fix listed | CNA |
| — | github.com/ovn-org/ovn-kubernetes (Go) | up to 0.3.0 | — | No fix listed | GHSA-57v4-m9jx-mh8r |
- openshift/ovn-kubernetes Vendor— Affected All ovn-kubernetes versions up to and including 0.3.0 Fixed in — No fix listed CNA
- github.com/ovn-org/ovn-kubernetes (Go) Vendor— Affected up to 0.3.0 Fixed in — No fix listed GHSA-57v4-m9jx-mh8r
Remediation
No fixed version listed by the sources yet.
Vendor assessments
Red Hat
Red Hat rating: Moderate. Red Hat's page for this CVE →
| Product | Status | Plan or fix |
|---|---|---|
| Red Hat OpenShift Container Platform 4.7 | Fixed | — |
Timeline
- 2026-10-02 Threatist record created from CVE-2021-3499
- 2026-10-03 Alias added: GHSA-57v4-m9jx-mh8r
References
More Ovn-kubernetes vulnerabilities
- TI-2022-00486 Improper input validation in ovn-kubernetes CVSS 3.1CRITICAL 9.1
Sources
- CVE-2021-3499 · CVE Program
- CVE-2021-3499 · NVD
- FIRST EPSS
- GHSA-57v4-m9jx-mh8r · GitHub Advisory Database · CC BY 4.0
- CVE-2021-3499 · Red Hat security data · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences