Vendor
Envoy vulnerabilities
Updated . Rebuilt every hour.
Junglewise Threat Intelligence has tracked 12 vulnerabilities in Envoy: 0 in the last 7 days and 11 in the last 90 days, 0 of them critical and 0 exploited in the wild. The most recent, Envoy AI Gateway MCP session hijacking via missing subject verification, was published on 19 October 2026. 2 vulnerabilities in the last four weeks, down 78% on the four before (9). 2 technologies have a page of their own.
- Last 7 days
- 0
- Last 90 days
- 11
- Critical, all time
- 0
- Exploited in the wild
- 0
About Envoy
Open source proxy and communication bus for cloud-native applications.
Envoy technologies
Latest Envoy vulnerabilities
- Envoy AI Gateway MCP session hijacking via missing subject verificationmediumCVSS 4
- Istio and Envoy Proxy security vulnerabilitiesinfo
- 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-2026-73513: Envoy Proxy multiple vulnerabilitieshighCVSS 7.5EPSS 0.7%
- 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%
- Envoy Proxy QPACK decoding denial-of-service in HTTP/3info
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-2026-73513: Envoy Proxy multiple vulnerabilitieshighCVSS 7.5EPSS 0.7%
- 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%
- Envoy AI Gateway MCP session hijacking via missing subject verificationmediumCVSS 4
Vulnerabilities per week
2 vulnerabilities in the last four weeks, down 78% on the four before (9). The last 13 weeks, by the week each vulnerability was published.
| Week of | Bar | Vulns | Critical |
|---|---|---|---|
| 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 | 9 | 0 | |
| 28 Sep 2026 | 0 | 0 | |
| 5 Oct 2026 | 0 | 0 | |
| 12 Oct 2026 | 0 | 0 | |
| 19 Oct 2026 | 2 | 0 | |
| 26 Oct 2026 | 0 | 0 | |
| 2 Nov 2026 | 0 | 0 | |
| 9 Nov 2026 | 0 | 0 |
Embed a badge
A live badge for a README, a status page or an internal wiki: how many Envoy vulnerabilities were published in the last 7 days and how many of them are critical, refreshed hourly.
[](https://junglewise.ai/threats/vendors/envoy)<a href="https://junglewise.ai/threats/vendors/envoy"><img src="https://junglewise.ai/threats/vendors/envoy/badge.svg" alt="Envoy vulnerabilities" /></a>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/vendors/envoy.json, and this page as text at https://junglewise.ai/threats/vendors/envoy.md, 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/vendors/envoy, 9 November 2026.