Vulnerability Description
Envoy Gateway is an open source project for managing Envoy Proxy as a standalone or Kubernetes-based application gateway. In all Envoy Gateway versions prior to 1.2.7 and 1.3.1 a default Envoy Proxy access log configuration is used. This format is vulnerable to log injection attacks. If the attacker uses a specially crafted user-agent which performs json injection, then he could add and overwrite fields to the access log. This vulnerability is fixed in 1.3.1 and 1.2.7. One can overwrite the old text based default format with JSON formatter by modifying the "EnvoyProxy.spec.telemetry.accessLog" setting.
CVSS Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Envoyproxy | Gateway | < 1.2.7 |
Related Weaknesses (CWE)
References
- https://github.com/envoyproxy/gateway/commit/8f48f5199cf1bbb9a8ac0695c5171bfef6cPatch
- https://github.com/envoyproxy/gateway/security/advisories/GHSA-mf24-chxh-hmvjMitigationThird Party Advisory
FAQ
What is CVE-2025-25294?
CVE-2025-25294 is a vulnerability with a CVSS score of 5.3 (MEDIUM). Envoy Gateway is an open source project for managing Envoy Proxy as a standalone or Kubernetes-based application gateway. In all Envoy Gateway versions prior to 1.2.7 and 1.3.1 a default Envoy Proxy a...
How severe is CVE-2025-25294?
CVE-2025-25294 has been rated MEDIUM with a CVSS base score of 5.3/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2025-25294?
Check the references section above for vendor advisories and patch information. Affected products include: Envoyproxy Gateway.