# google.golang.org/grpc (Go) vulnerabilities

4 known vulnerabilities (1 critical, 2 high, 1 medium), with the versions each affects and the releases that fix them.

## At a glance

- Latest release: v1.85.0 (Oct 27, 2026): no advisory affects it
- Newest unaffected release: v1.85.0 (Oct 27, 2026), the latest release
- Releases: 249 since v1.0.0 (Jul 11, 2016)
- Registry: https://pkg.go.dev/google.golang.org/grpc
- Releases read: Nov 8, 2026

## Version timeline

Affected versions per advisory, in version order:

- CVE-2026-84445: v1.0.0 to v1.82.1 (v1.82.2 is outside it); v1.83.0 to v1.83.1 (v1.83.2 is outside it); v1.84.0-dev (v1.84.0 is outside it); v1.85.0-dev (v1.85.0 is outside it)
- CVE-2026-84304: v1.0.0 to v1.83.0 (v1.83.1 is outside it)
- CVE-2026-84303: v1.0.0 to v1.83.0 (v1.83.1 is outside it)
- CVE-2026-33186: v1.0.0 to v1.79.2 (v1.79.3 is outside it)

## Advisories (4)

### [CVE-2026-84445](https://cve.now/CVE-2026-84445): gRPC-Go: Denial of Service (DoS) via crash due to missing \`:authority\` and \`Host\` headers in the xDS servers

- Severity: High 8.7
- Published: Sep 14, 2026
- Affected: fixed in 1.82.2; from 1.83.0, fixed in 1.83.2; from 1.84.0-dev, fixed in 1.84.0-dev.0.20260825144003-d5a41119e0e3; from 1.85.0-dev, fixed in 1.85.0-dev.0.20260825072537-93e31b48545e; fixed in 1.82.2; from 1.83.0, fixed in 1.83.2; from 1.84.0-dev, fixed in 1.84.0-dev.0.20260825144003-d5a41119e0e3; from 1.85.0-dev, fixed in 1.85.0-dev.0.20260825072537-93e31b48545e.
- Fixed in v1.82.2 (released Aug 25, 2026, 20 days before disclosure), v1.83.2 (released Aug 25, 2026, 20 days before disclosure), v1.84.0 (released Sep 17, 2026, 3 days after disclosure, the advisory names 1.84.0-dev.0.20260825144003-d5a41119e0e3, which was never published) and 1 other version.
- The latest release, v1.85.0, is not affected.

### [CVE-2026-84304](https://cve.now/CVE-2026-84304): gRPC-Go: Heap Memory Exhaustion (OOM) via HTTP/2 DATA Frame Fragmentation

- Severity: High 8.7
- Published: Sep 1, 2026
- Affected: fixed in 1.83.1.
- Fixed in v1.83.1 (released Aug 19, 2026, 13 days before disclosure).
- The latest release, v1.85.0, is not affected.

### [CVE-2026-84303](https://cve.now/CVE-2026-84303): gRPC-Go: xDS RBAC HTTP Filter bypass via mixed-case Header Matching and gRFC A41 validation evasion

- Severity: Medium 6.3
- Published: Sep 1, 2026
- Affected: fixed in 1.83.1.
- Fixed in v1.83.1 (released Aug 19, 2026, 13 days before disclosure).
- The latest release, v1.85.0, is not affected.

### [CVE-2026-33186](https://cve.now/CVE-2026-33186): gRPC-Go has an authorization bypass via missing leading slash in :path

- Severity: Critical 9.1
- Published: Mar 20, 2026
- Affected: fixed in 1.79.3.
- Fixed in v1.79.3 (released Mar 17, 2026, 3 days before disclosure).
- The latest release, v1.85.0, is not affected.

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