CVSS 3.1
5.3 mediumCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:NCVE-2025-25294
Medium (5.3) in envoyproxy gateway. EPSS 0.3% chance of exploitation in the next 30 days. Fixed in github.com/envoyproxy/gateway 1.2.7, 1.3.1.
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.
Severity
- EPSS
- 0.3% chance of exploitation in the next 30 days; higher than 21% of CVEs (scores of 2026-10-31)
- CWE
- CWE-117
- Published
- Modified
- Record from
- the NVD, synced
Affected
- envoyproxy:gateway
Packages (OSV)
| Advisory | Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|---|
| GHSA-mf24-chxh-hmvj | Go | github.com/envoyproxy/gateway | <1.2.7 | 1.2.7 |
| GHSA-mf24-chxh-hmvj | Go | github.com/envoyproxy/gateway | >=1.3.0-rc.1 <1.3.1 | 1.3.1 |
| GO-2025-3504 | Go | github.com/envoyproxy/gateway | <1.2.7 >=1.3.0-rc.1 <1.3.1 | 1.2.7, 1.3.1 |