Envoy vulnerabilities: known CVEs & security history
Envoy Proxy · Proxy · 16 tracked CVEs · 1 actively exploited · updated September 2026 · what is a CVE? →
This is the full list of known vulnerabilities (CVEs) across all Envoy release lines — 16 in total, with 1 actively exploited in the wild. A CVE here doesn't mean your version is affected — check Envoy's current status and the safe version to run.
Known Envoy CVEs
Actively-exploited and most-severe first. Open any CVE for full details.
| CVE | Severity | CVSS | EPSS | Year |
|---|---|---|---|---|
| CVE-2023-44487⚡ exploited | high | 7.5 | 100% | 2023 |
| CVE-2026-47220 | high | 7.5 | 1% | 2026 |
| CVE-2026-48743 | high | 7.5 | 0% | 2026 |
| CVE-2026-48044 | high | 7.5 | 0% | 2026 |
| CVE-2026-48042 | high | 7.5 | 1% | 2026 |
| CVE-2026-47774 | high | 7.5 | 1% | 2026 |
| CVE-2026-47775 | medium | 6.8 | 0% | 2026 |
| CVE-2026-47207 | medium | 6.5 | 0% | 2026 |
| CVE-2026-47204 | medium | 6.5 | 0% | 2026 |
| CVE-2026-48090 | medium | 5.9 | 1% | 2026 |
| CVE-2026-47205 | medium | 5.9 | 0% | 2026 |
| CVE-2026-48706 | medium | 5.9 | 1% | 2026 |
| CVE-2026-48497 | medium | 5.9 | 0% | 2026 |
| CVE-2026-47221 | medium | 5.9 | 0% | 2026 |
| CVE-2026-47692 | medium | 4.8 | 0% | 2026 |
| CVE-2026-47778 | medium | 4.4 | 0% | 2026 |
Is my Envoy version affected?
The list above spans every release. To know whether your version is affected — and the minimum safe version to upgrade to — check it directly.
Check your Envoy version → · Monitor Envoy for new CVEs →
Envoy vulnerabilities — frequently asked
How many known vulnerabilities does Envoy have?
IsItPatched tracks 16 CVEs for Envoy, 1 of which is actively exploited (CISA KEV). 0 are critical-severity and 6 high-severity. These span every release line — what matters is whether the version you run is affected.
Does Envoy have any actively-exploited vulnerabilities?
Yes — 1 Envoy CVE is in CISA's Known Exploited Vulnerabilities catalog, meaning it is confirmed exploited in the wild. Patch it as a priority.
What is the most severe Envoy vulnerability?
Among tracked issues, CVE-2023-44487 (HIGH, CVSS 7.5), which is actively exploited, ranks highest — a Uncontrolled resource consumption weakness.
Is Envoy safe to use?
It depends on the version. The latest supported Envoy release (1.39.0) clears the known issues; older versions may still be affected. Check the exact version you run for a verdict.
CVE data aggregated from NVD, CISA KEV and EPSS (FIRST.org). Related: Envoy security status · Envoy end-of-life · actively-exploited CVEs. Always verify against Envoy Proxy's advisories — see our disclaimer.