VDB
CVE-2026-56855
CVE-2026-56855
PUBLISHED
CVSS 7.5 HIGH
Reported by Go · Published September 2, 2026
Previously, after a channel has been established, a malicious peer could send crafted messages that would deadlock the entire connection. Now, we handle all RFC 4254 channel messages; global requests are handled explicitly. Then, treat all other messages as a protocol error and tear the connection down instead of buffering and blocking.
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 |
|---|---|---|
| golang.org/x/crypto | golang.org/x/crypto/ssh | 0 |
| chainguard | crossplane-provider-azure-operationalinsights | *, * |
| chainguard | envoy-gateway-1.8 | *, * |
| chainguard | dbmate | *, * |
| wolfi | sql_exporter | *, *, * |
| chainguard | crossplane-provider-aws-cloudformation | *, * |
| wolfi | docker-compose | *, *, * |
| chainguard | cluster-api-1.11 | *, * |
| chainguard | chainloop-control-plane-fips | *, * |
| chainguard | rook-1.18 | *, * |
| chainguard | slsa-verifier | *, * |
| wolfi | docker-28 | 0, 0, 0 |
| chainguard | tekton-pipelines-1.14 | *, * |
| wolfi | prometheus-operator | 0, 0, 0 |
| chainguard | vcluster-fips | *, * |
| wolfi | keda-2.19 | *, *, * |
| chainguard | crossplane-provider-aws-wafregional-fips | *, * |
| wolfi | osv-scanner | 0, 0, 0 |
| chainguard | azure-service-operator-fips | *, * |
| chainguard | mcp-grafana | *, * |
…and 2598 more
Timeline
- Sep 2, 2026 Coalition ESS Score
- Sep 2, 2026 CVE Published
- Sep 3, 2026 EPSS Score
- Sep 3, 2026 CVE Updated
- Sep 4, 2026 EPSS Score
- Sep 5, 2026 EPSS Score
- Sep 6, 2026 EPSS Score
- Sep 9, 2026 EPSS Score
- Sep 12, 2026 EPSS Score
- Sep 16, 2026 EPSS Score
- Sep 18, 2026 EPSS Score