CVE-2025-30157

Description

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.

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CVSS v3.1 Score

6.5

MEDIUM

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

Weakness Type (CWE)

CWE-460 CWE-460

Affected Products

Vendor	Product	Versions
envoyproxy	envoy	< 1.30.10
envoyproxy	envoy	1.31.0 — 1.31.6
envoyproxy	envoy	1.32.0 — 1.32.4
envoyproxy	envoy	All

References

Advisories & Patches

https://github.com/envoyproxy/envoy/commit/8eda1b8ef5ba8663d16a737ab99458c039a9b53c https://github.com/envoyproxy/envoy/security/advisories/GHSA-cf3q-gqg7-3fm9 https://github.com/envoyproxy/envoy/security/advisories/GHSA-cf3q-gqg7-3fm9

Frequently Asked Questions

What is 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. It has a CVSS v3.1 base score of 6.5 (MEDIUM).

How severe is CVE-2025-30157? +

CVE-2025-30157 has a CVSS v3.1 score of 6.5 out of 10, rated MEDIUM. This is a medium-severity vulnerability that should be remediated as part of regular maintenance.

What products are affected by CVE-2025-30157? +

CVE-2025-30157 affects products from envoyproxy, specifically: envoy. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2025-30157? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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