What’s Vulnerable › Vulnerabilities

CVE-2020-12603

• Severity: high (CVSS 7.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.4% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2020-07-01 · updated 2026-06-17
• Weakness: CWE-400

Description

Envoy version 1.14.2, 1.13.2, 1.12.4 or earlier may consume excessive amounts of memory when proxying HTTP/2 requests or responses with many small (i.e. 1 byte) data frames.

Affected products

• envoyproxy envoy: through 1.12.4; 1.13.2, 1.14.2

References

• https://github.com/envoyproxy/envoy-setec/issues/80
• https://github.com/envoyproxy/envoy/security/advisories/GHSA-pc38-4q6c-85p6
• https://github.com/envoyproxy/envoy-setec/issues/80
• https://github.com/envoyproxy/envoy/security/advisories/GHSA-pc38-4q6c-85p6

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