CVE-2026-84445
Vulnerability Summary
Timeline
Description
gRPC-Go is the Go language implementation of gRPC. Prior to 1.82.2 and 1.83.2, servers created with xds.NewGRPCServer() allow internal/transport/http2_server.go to accept an RPC containing neither the :authority header nor the Host header, while RouteAndProcess in internal/xds/server/routing.go assumes that an authority value exists and indexes the empty slice. A remote client that can complete transport connection establishment can trigger an index-out-of-bounds panic that is not recovered by the per-RPC goroutine and terminates the entire server process. In insecure or ordinary TLS deployments the request can be unauthenticated, while strict mTLS or ALTS deployments require valid transport credentials before the malformed RPC can reach the interceptor. This issue is fixed in versions 1.82.2 and 1.83.2.
CVSS Metrics
- v4.0•HIGH•Score: 8.7CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
- v4.0•HIGH•Score: 8.7CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
EPSS Trends
Current EPSS score: 0.69%• Percentile: 51%
Techniques & Countermeasures
- CWE-129•Improper Validation of Array Index
The product uses untrusted input when calculating or using an array index, but the product does not validate or incorrectly validates the index to ensure the index references a valid position within the array.
- CWE-248•Uncaught Exception
An exception is thrown from a function, but it is not caught.
Affected Systems
- chainguard•aactl
all | < 0.4.12-r76
- chainguard•agentbeat
all | < 9.2.7-r29
- chainguard•agentbeat-fips
all | < 9.2.7-r28
- chainguard•amass
all | < 5.1.1-r17
- chainguard•amazon-cloudwatch-agent
all | < 1.300073.0-r1
- chainguard•amazon-cloudwatch-agent-fips
all | < 1.300073.0-r2
- chainguard•amazon-cloudwatch-agent-operator
all | < 3.7.0-r6
- chainguard•amazon-cloudwatch-agent-operator-fips
< 3.7.0-r5
- chainguard•amazon-k8s-cni
all | < 1.23.0-r5
- chainguard•amazon-k8s-cni-fips
all | < 1.23.0-r7
- chainguard•amazon-k8s-cni-init-compat
< 1.23.1-r0
- chainguard•amazon-ssm-agent
all | < 3.3.5226.0-r4
- chainguard•amazon-ssm-agent-ecs-exec
all | < 3.3.5226.0-r4
- chainguard•amazon-ssm-agent-ecs-exec-fips
all | < 3.3.5226.0-r4
- chainguard•amazon-ssm-agent-fips
all | < 3.3.5226.0-r4
- chainguard•ansible-operator
all | < 1.42.3-r16
- chainguard•ansible-operator-fips
all | < 1.42.3-r13
- chainguard•apache-beam-java-11-sdk
all | < 2.76.0-r3
- chainguard•apache-beam-java-17-sdk
all | < 2.76.0-r3
- chainguard•apache-beam-java-21-sdk
all | < 2.76.0-r3
- chainguard•apache-beam-python-3.11-sdk
all | < 2.76.0-r2
- chainguard•apache-beam-python-3.12-sdk
all
- chainguard•apache-beam-python-3.13-sdk
< 2.76.0-r2 | all
- chainguard•apache-beam-python-3.14-sdk
all | < 2.76.0-r2
- chainguard•apiserver-network-proxy-0.34
all | < 0.34.0-r9
- chainguard•apiserver-network-proxy-0.34-agent
all | < 0.34.0-r9
- chainguard•apiserver-network-proxy-0.35
all | < 0.35.0-r9
- chainguard•apiserver-network-proxy-0.35-agent
all | < 0.35.0-r9
- chainguard•apiserver-network-proxy-0.36
all | < 0.36.0-r9
- chainguard•apiserver-network-proxy-0.36-agent
all | < 0.36.0-r9
- chainguard•apiserver-network-proxy-fips-0.34
all | < 0.34.0-r13
- chainguard•apiserver-network-proxy-fips-0.34-agent
all | < 0.34.0-r13
- chainguard•apiserver-network-proxy-fips-0.35
all | < 0.35.0-r13
- chainguard•apiserver-network-proxy-fips-0.35-agent
all | < 0.35.0-r13
- chainguard•apiserver-network-proxy-fips-0.36
< 0.36.0-r13
- chainguard•apiserver-network-proxy-fips-0.36-agent
all | < 0.36.0-r13
- chainguard•apisix-ingress-controller
all | < 2.2.0-r5
- chainguard•apm-server-8.19
all | < 8.19.21-r5
- chainguard•apm-server-9.2
all | < 9.2.8-r14
- chainguard•apm-server-9.3
all | < 9.3.8-r6
- chainguard•apm-server-9.5
all | < 9.5.3-r2
- chainguard•apm-server-fips-8.19
all | < 8.19.21-r3
- chainguard•apm-server-fips-9.2
all
- chainguard•apm-server-fips-9.3
< 9.3.8-r6
- chainguard•apm-server-fips-9.4
all | < 9.4.6-r2
- chainguard•apm-server-fips-9.5
all | < 9.5.3-r1
- chainguard•apply-cve-bump
all | < 0.2.348-r0
- chainguard•argo-cd-3.1
all
- chainguard•argo-cd-3.1-compat
all
- chainguard•argo-cd-3.2
all | < 3.2.12-r18
Showing first 50 affected entries in server-rendered view.
References (14)
- https://github.com/grpc/grpc-go/security/advisories/GHSA-2v4p-qf9q-27wj
- https://github.com/grpc/grpc-go/issues/9354
- https://github.com/grpc/grpc-go/pull/9365
- https://github.com/grpc/grpc-go/pull/9366
- https://github.com/grpc/grpc-go/pull/9367
- https://github.com/grpc/grpc-go/commit/3822494d8ea03b992c089fd2a195f041762fffb7
- https://github.com/grpc/grpc-go/commit/8668b69c167df908b6b3666dcbf40992b9e932a4
- https://github.com/grpc/grpc-go/commit/93e31b48545e2a8aaeb6e06b47fb249f94e6297f
- https://github.com/grpc/grpc-go
- https://github.com/grpc/grpc-go/releases/tag/v1.82.2
- https://github.com/grpc/grpc-go/releases/tag/v1.83.2
- https://security-tracker.debian.org/tracker/CVE-2026-84445
- https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/84xxx/CVE-2026-84445.json
- https://nvd.nist.gov/vuln/detail/CVE-2026-84445