What’s Vulnerable › Vulnerabilities

CVE-2020-25018

• Severity: high (CVSS 7.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.1% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2020-10-01 · updated 2026-06-17

Description

Envoy master between 2d69e30 and 3b5acb2 may fail to parse request URL that requires host canonicalization.

Affected products

• envoyproxy envoy: from 2d69e30 before 3b5acb2 — fixed in 3b5acb2

How to fix

Upgrade to a fixed version: envoyproxy envoy 3b5acb2. Check the vendor advisory for mitigations.

References

• https://github.com/envoyproxy/envoy/security/advisories/GHSA-fwwh-fc9w-9673
• https://groups.google.com/forum/#%21forum/envoy-security-announce
• https://github.com/envoyproxy/envoy/security/advisories/GHSA-fwwh-fc9w-9673
• https://groups.google.com/forum/#%21forum/envoy-security-announce

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