Vulnerability in Envoyproxy Envoy
CVE-2025-30157
Envoy is a cloud-native high-performance edge/middle/service proxy. Prior to 1.33.1, 1.32.4, 1.31.6, and 1.30.10, Envoy's ext_proc HTTP filter is at risk of crashing if a local reply is sent to the external server due to the filter's life time issue. A known situation is the failure of a websocket handshake will trigger a local reply leading to the crash of Envoy. This vulnerability is fixed in 1.33.1, 1.32.4, 1.31.6, and 1.30.10.
EPSS: 0.004 (35.1th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H.
Affected products
- Envoyproxy Envoy — versions < 1.30.10, >= 1.31.0, < 1.31.6, >= 1.32.0, < 1.32.4
Weakness classification (CWE)
References
- security-advisories@github.com (x_refsource_CONFIRM, Vendor Advisory)
- security-advisories@github.com (Patch, x_refsource_MISC)
Frequently asked questions
- What is CVE-2025-30157?
- CVE-2025-30157 is a medium-severity vulnerability in Envoyproxy Envoy, classified under CWE-460. CVSS score: 6.5/10. Published 2025-03-21.
- How severe is CVE-2025-30157?
- Medium severity. CVSS v3 base score is 6.5 out of 10.