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.
References (2)
Core 2
Core References
Mitigation, Third Party Advisory x_refsource_confirm
https://github.com/envoyproxy/gateway/security/advisories/GHSA-mf24-chxh-hmvj
Scores
CVSS v3
5.3
EPSS
0.0026
EPSS Percentile
17.6%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
CISA SSVC
Vulnrichment
Exploitation
none
Automatable
yes
Technical Impact
partial
Details
CWE
CWE-117
Status
published
Products (2)
envoyproxy/gateway
< 1.2.7
envoyproxy/gateway
0 - 1.2.7Go
Published
Mar 06, 2025
Tracked Since
Feb 18, 2026