Projectcontour develops Contour, an open-source ingress controller and API gateway for Kubernetes that manages traffic routing and service exposure within containerized environments. The vendor's observed vulnerabilities cluster around access control and code-injection issues, including insecure inherited permissions, externally controlled resource references, and code-injection mechanisms, reflecting the authentication and dynamic configuration demands of a control-plane proxy component. Current severity, exploitation, and exposure counts are shown alongside this summary.
The number and severity of CVEs published that impact products developed by Projectcontour over time
Signals from CVEs in this vendor scope (5 CVEs).
5 CVEs · Highest risk first
| CVE | Published | CVSS | Risk | KEV | Exploit |
|---|---|---|---|---|---|
CVE-2023-44487HIGH The HTTP/2 protocol allows a denial of service (server resource consumption) because request cancellation can reset many streams quickly, as exploited in the wild in August through | Oct 10, 2023 | 7.5 | 97 | YES | YES |
CVE-2026-41246HIGH Contour is a Kubernetes ingress controller using Envoy proxy. From v1.19.0 to before v1.33.4, v1.32.5, and v1.31.6, Contour's Cookie Rewriting feature is vulnerable to Lua code inj | Apr 23, 2026 | 8.1 | 30 | NO | NO |
CVE-2021-32783HIGH Contour is a Kubernetes ingress controller using Envoy proxy. In Contour before version 1.17.1 a specially crafted ExternalName type Service may be used to access Envoy's admin int | Jul 23, 2021 | 8.5 | 27 | NO | NO |
CVE-2024-36539CRITICAL Insecure permissions in contour v1.28.3 allows attackers to access sensitive data and escalate privileges by obtaining the service account's token. | Jul 24, 2024 | 9.8 | 26 | NO | NO |
CVE-2020-15127HIGH In Contour ( Ingress controller for Kubernetes) before version 1.7.0, a bad actor can shut down all instances of Envoy, essentially killing the entire ingress data plane. GET reque | Aug 5, 2020 | 7.5 | 25 | NO | NO |
Signals from CVEs in this vendor scope (5 CVEs).
An overview of all social media posts that mention a CVE ID that affects a product developed by Projectcontour.
Media articles that mention a CVE ID that affects a product developed by Projectcontour — matched by CVE ID, not by vendor name.