Technology · Envoy
Envoy vulnerabilities
Updated . Rebuilt every hour.
Junglewise Threat Intelligence has tracked 8 vulnerabilities in Envoy: 8 in the last 7 days and 8 in the last 90 days, 0 of them critical and 0 exploited in the wild. The most recent, CVE-2026-73553, was published on 21 September 2026.
- Last 7 days
- 8
- Last 90 days
- 8
- Critical, all time
- 0
- Exploited in the wild
- 0
About Envoy
Service proxy providing load balancing and communication infrastructure for microservices.
Latest Envoy vulnerabilities
- CVE-2026-73553: Envoy authorization bypass via path parameter inconsistencyhighCVSS 7.5EPSS 0.5%
- CVE-2026-73551: Envoy path normalization bypass with semicolon parametersmediumCVSS 5.3EPSS 0.5%
- CVE-2026-73552: Envoy HTTP RBAC bypass via unsafe regex in headershighCVSS 7.5EPSS 0.7%
- CVE-2026-73550: Envoy HTTP/2 Host header denial of servicehighCVSS 7.5EPSS 0.9%
- CVE-2026-73549: Envoy scoped IPv6 address parsing denial of servicemediumCVSS 5.3EPSS 0.6%
- CVE-2026-73547: Envoy null pointer dereference in ext_authz filterhighCVSS 7.5EPSS 0.8%
- CVE-2026-73512: Envoy heap-use-after-free in HttpDatagramHandlerhighCVSS 7.5EPSS 0.8%
- CVE-2026-50572: Envoy use-after-free in HTTP external-authorization clientmediumCVSS 5.9EPSS 0.7%
Most severe Envoy vulnerabilities
Exploited in the wild first, then by severity and CVSS score.
- CVE-2026-73550: Envoy HTTP/2 Host header denial of servicehighCVSS 7.5EPSS 0.9%
- CVE-2026-73547: Envoy null pointer dereference in ext_authz filterhighCVSS 7.5EPSS 0.8%
- CVE-2026-73512: Envoy heap-use-after-free in HttpDatagramHandlerhighCVSS 7.5EPSS 0.8%
- CVE-2026-73552: Envoy HTTP RBAC bypass via unsafe regex in headershighCVSS 7.5EPSS 0.7%
- CVE-2026-73553: Envoy authorization bypass via path parameter inconsistencyhighCVSS 7.5EPSS 0.5%
- CVE-2026-50572: Envoy use-after-free in HTTP external-authorization clientmediumCVSS 5.9EPSS 0.7%
- CVE-2026-73549: Envoy scoped IPv6 address parsing denial of servicemediumCVSS 5.3EPSS 0.6%
- CVE-2026-73551: Envoy path normalization bypass with semicolon parametersmediumCVSS 5.3EPSS 0.5%
Vulnerabilities per week
The last 13 weeks, by the week each vulnerability was published.
| Week of | Bar | Vulns | Critical |
|---|---|---|---|
| 6 Jul 2026 | 0 | 0 | |
| 13 Jul 2026 | 0 | 0 | |
| 20 Jul 2026 | 0 | 0 | |
| 27 Jul 2026 | 0 | 0 | |
| 3 Aug 2026 | 0 | 0 | |
| 10 Aug 2026 | 0 | 0 | |
| 17 Aug 2026 | 0 | 0 | |
| 24 Aug 2026 | 0 | 0 | |
| 31 Aug 2026 | 0 | 0 | |
| 7 Sep 2026 | 0 | 0 | |
| 14 Sep 2026 | 0 | 0 | |
| 21 Sep 2026 | 8 | 0 | |
| 28 Sep 2026 | 0 | 0 |
How this is built
Junglewise Threat Intelligence collects vulnerabilities from NVD, GitHub Security Advisories, OSV, the CISA Known Exploited Vulnerabilities catalog, FIRST EPSS and vendor advisories, and matches each one to the technologies and vendors it affects. Dates are the date a vulnerability was published, in UTC.
The pages are rebuilt from the database every hour. Frozen weekly and monthly reports never change once published, so they can be cited.
Use this data
The same data is at https://junglewise.ai/threats/technologies/envoy-envoy.json, for scripts and language models. It is free to reuse under CC BY 4.0 with a link back to this page.
Cite as: Junglewise Threat Intelligence, "Envoy vulnerabilities", https://junglewise.ai/threats/technologies/envoy-envoy, 28 September 2026.