Envoyproxy: community verdicts

2 notable / known-exploited Envoyproxy CVEs the community has triaged.

ⓘ Not an exhaustive list: we focus on the findings that matter (exploited / notable). For every Envoyproxy CVE, see NVD ↗.

Tracked Envoyproxy CVEs by year published2 tracked · select a year for details

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Year published	CVEs	In CISA KEV
2023	1	1
2024	0	0
2025	0	0
2026	1	1

Exploitation first, with newly exploited CVEs rising above old ones

CVE-2026-111497CRIT 9.8KEVEPSS 83%
A buffer overflow vulnerability in the Brotli decoder (c/dec/decode.c) in Google Brotli versions 1.0.3 through 1.2.0 on all platforms allows a remote unauthenticated attacker to corrupt adjacent decoder state memory, disclose sensitive memory contents, cause a denial of service, or potentially execute arbitrary code using a crafted Brotli-compressed stream. Users need to update any Brotli libraries or binaries between 1.0.3 through 1.2.0 to the latest available version: 1.0.10 or 1.1.1 or 1.2.1.
CVE-2023-44487HIGH 7.5KEVEPSS 100%
The HTTP/2 protocol allows a denial of service (server resource consumption) because request cancellation can reset many streams quickly, as exploited in the wild in August through October 2023.