VDB
CVE-2026-56862
CVE-2026-56862
PUBLISHED
CVSS 7.5 HIGH
Reported by Go · Published August 13, 2026
Handshake messages, such as KeyUpdate, are always considered as state-advancing, regardless of whether a handshake has been completed or not. As a result, a malicious client can keep sending KeyUpdate messages to force the server to keep performing key derivation operations indefinitely.
Risk Scores
CVSS 3.1
7.5
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Go standard library | crypto/tls | 0, 1.26.0-0, 1.27.0-0 |
| chainguard | gitness | 0 |
| chainguard | go-slim-1.26 | * |
| chainguard | cri-tools | 0 |
| wolfi | temporal | 0, 0, 0 |
| chainguard | loki-fips-3.4 | 0, 0 |
| chainguard | gendesk | 0 |
| chainguard | conftest | 0 |
| chainguard | virt-operator-fips-1.6 | 0 |
| wolfi | terraform | 0, 0, 0 |
| chainguard | prometheus-beat-exporter-fips | 0, 0 |
| chainguard | cosign-fips-3 | 0 |
| wolfi | sonobuoy | 0, 0, 0 |
| wolfi | chisel | 0, 0, 0 |
| chainguard | argo-rollouts-fips | 0 |
| wolfi | addon-resizer | 0, 0, 0 |
| chainguard | kcp-fips-0.31 | 0 |
| chainguard | image-factory-fips | 0 |
| chainguard | crossplane-provider-aws-redshiftserverless-fips | 0 |
| chainguard | rancher-2.14 | 0, 0 |
…and 2808 more
Timeline
- Aug 13, 2026 CVE Published
- Aug 14, 2026 CVE Updated
- Aug 15, 2026 Coalition ESS Score
- Aug 20, 2026 Security Advisory
- Aug 24, 2026 EPSS Score
- Aug 26, 2026 EPSS Score
- Aug 27, 2026 EPSS Score
- Aug 28, 2026 EPSS Score
- Aug 29, 2026 Distribution Patch
- Aug 29, 2026 Security Advisory
- Aug 29, 2026 Distribution Patch
- Aug 29, 2026 Security Advisory