# CVE-2026-84303: gRPC-Go: xDS RBAC HTTP Filter bypass via mixed-case Header Matching and gRFC A41 validation evasion CVE-2026-84303 is fixed in 19 products on 1 platform, first by OPENSUSE-SU-2026:21801-1, released September 7, 2026. It is not reported as exploited. Patch Radar priority: Routine. - Web page: https://patchblox.com/security/cve/CVE-2026-84303 - Priority: Routine - CVSS: n/a (Moderate) - EPSS: 0.0031 - CISA KEV: not listed - Exploited (vendor report): no - Publicly disclosed: no - Published: Sep 7, 2026 - Weakness: Improper Handling of Case Sensitivity - Vendor advisory: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-84303 ## Description This update for amazon-cloudwatch-agent fixes the following issues: - CVE-2026-84303: google.golang.org/grpc: xDS RBAC HTTP filter implementation issue allows for bypass of authorization policies via mixed-case or canonical-case header matches (bsc#1279334). - CVE-2026-84304: google.golang.org/grpc: heap memory exhaustion via HTTP/2 DATA frame fragmentation (bsc#1279235). - CVE-2026-84445: google.golang.org/grpc: DoS via crash due to missing `:authority` and `Host` headers in gRPC-Go xDS servers (bsc#1279393). Changes for amazon-cloudwatch-agent: - Update to version 1.300072.0 * [DatabaseInsights] Enable PostgreSQL execution plan collection by @AshuSrv in (#2225) * [DatabaseInsights] Add workload detection for PostgreSQL database servers by @Paamicky in (#2220) * [ApplicationSignals] Preserve jvm.gc.name attribute in GC runtime metrics to differentiate collector types by @ezhang6811 in (#2218) * [DatabaseInsights] Split PostgreSQL per-resource metrics to a dedicated 60s receiver to reduce collection overhead by @EduVencovsky in (#2232) * [Agent] Bump grpc and golang.org/x/net dependencies by @dependabot in (#2217) and @movence in (#2242) * [Agent] Fix AKS cloud.resource_id derivation to use the cluster resource group by @jefchien in (#2237) - Lock github.com/prometheus/common at v0.62.0 - Update to version 1.300071.0 * [OpenTelemetry] Add file tailing and Windows Events support by @jefchien in (#2206) and (#2193) * [OpenTelemetry] Add resource_attributes support by @movence in (#2207) * [Agent] Add set-env ctl action to persist agent environment variables by @sky333999 in (#2211) * [Agent] Add platform-aware default configs for OpenTelemetry (host, Kubernetes, ECS) by @jefchien in (#2179) * [Agent] Add Microsoft Azure support for VMs and AKS by @movence in (#2183) * [OpenTelemetry] Add root-level cluster_name and standardize collection_interval by @Paamicky in (#2189) * [Agent] Retain custom environment variables in env-config.json between translation by @jefchien in (#2131) * [DatabaseInsights] Add severity parsing and fix multiline/timestamp for PostgreSQL server logs by @JayPolanco in (#2209) * [Logs] Fix throttling deadlock in cloudwatchlogs output plugin when destinations are removed by @lorespiz in (#2190) * [Logs] Fix force-flush timer permanently stalling on low-volume log streams by @musa-asad in (#2166) * [Logs] Add journald log collection support by @Paamicky in (#2121) * [OpenTelemetry] Add new opentelemetry section in JSON configuration to support sending telemetry to CloudWatch OTLP endpoints by @mitali-salvi in (#2152) * [DatabaseInsights] Add support for self-managed PostgreSQL metrics and logs collection by @JayPolanco in (#2172) * [ApplicationSignals] Fix Service Events logs and metrics pipelines to use shared AWS credential chain by @jefchien in (#2151) ## Where it's fixed | Platform | Product | Fixed in | Fix | Released | |---|---|---|---|---| | Linux | amazon-cloudwatch-agent sles 15.6 | 1.300072.0-150400.9.13.1 | [SUSE-SU-2026:4388-1](https://patchblox.com/security/data/fix/linux/suse-su-2026-4388-1.md) | Sep 29, 2026 | | Linux | amazon-cloudwatch-agent sles 15.7 | 1.300072.0-150400.9.13.1 | [SUSE-SU-2026:4388-1](https://patchblox.com/security/data/fix/linux/suse-su-2026-4388-1.md) | Sep 29, 2026 | | Linux | amazon-ecs-init opensuse-leap 16.0 | 1.107.0-160000.1.1 | [OPENSUSE-SU-2026:22035-1](https://patchblox.com/security/data/fix/linux/opensuse-su-2026-22035-1.md) | Oct 6, 2026 | | Linux | amazon-ecs-init sles 16.0 | 1.107.0-160000.1.1 | [SUSE-SU-2026:24150-1](https://patchblox.com/security/data/fix/linux/suse-su-2026-24150-1.md) | Oct 6, 2026 | | Linux | apptainer opensuse-leap 16.0 | 1.5.3-bp160.4.1 | [OPENSUSE-SU-2026:21927-1](https://patchblox.com/security/data/fix/linux/opensuse-su-2026-21927-1.md) | Sep 21, 2026 | | Linux | apptainer sles 15.7 | 1.5.3-150600.4.43.1 | [SUSE-SU-2026:4308-1](https://patchblox.com/security/data/fix/linux/suse-su-2026-4308-1.md) | Sep 23, 2026 | | Linux | azure-storage-azcopy sles 15.6 | 10.32.8-150400.9.21.1 | [SUSE-SU-2026:4125-1](https://patchblox.com/security/data/fix/linux/suse-su-2026-4125-1.md) | Sep 11, 2026 | | Linux | azure-storage-azcopy sles 15.7 | 10.32.8-150400.9.21.1 | [SUSE-SU-2026:4125-1](https://patchblox.com/security/data/fix/linux/suse-su-2026-4125-1.md) | Sep 11, 2026 | | Linux | cadvisor opensuse-leap 16.0 | 0.60.5-bp160.2.1 | [OPENSUSE-SU-2026:21843-1](https://patchblox.com/security/data/fix/linux/opensuse-su-2026-21843-1.md) | Sep 14, 2026 | | Linux | containerized-data-importer1.65 opensuse-leap 16.0 | 1.65.0-160000.3.1 | [OPENSUSE-SU-2026:21824-1](https://patchblox.com/security/data/fix/linux/opensuse-su-2026-21824-1.md) | Sep 9, 2026 | | Linux | distribution opensuse-leap 16.0 | 3.1.1-160000.3.1 | [OPENSUSE-SU-2026:21898-1](https://patchblox.com/security/data/fix/linux/opensuse-su-2026-21898-1.md) | Sep 21, 2026 | | Linux | distribution sles 16.0 | 3.1.1-160000.3.1 | [SUSE-SU-2026:23864-1](https://patchblox.com/security/data/fix/linux/suse-su-2026-23864-1.md) | Sep 21, 2026 | | Linux | gh opensuse-leap 16.0 | 2.102.0-bp160.1.1 | [OPENSUSE-SU-2026:22134-1](https://patchblox.com/security/data/fix/linux/opensuse-su-2026-22134-1.md) | Nov 7, 2026 | | Linux | google-cloud-sap-agent opensuse-leap 16.0 | 3.15-160000.4.1 | [OPENSUSE-SU-2026:21834-1](https://patchblox.com/security/data/fix/linux/opensuse-su-2026-21834-1.md) | Sep 14, 2026 | | Linux | google-cloud-sap-agent sles 15.6 | 3.15-150100.3.87.1 | [SUSE-SU-2026:4206-1](https://patchblox.com/security/data/fix/linux/suse-su-2026-4206-1.md) | Sep 16, 2026 | | Linux | google-cloud-sap-agent sles 15.7 | 3.15-150100.3.87.1 | [SUSE-SU-2026:4206-1](https://patchblox.com/security/data/fix/linux/suse-su-2026-4206-1.md) | Sep 16, 2026 | | Linux | google-cloud-sap-agent sles 16.0 | 3.15-160000.4.1 | [SUSE-SU-2026:23729-1](https://patchblox.com/security/data/fix/linux/suse-su-2026-23729-1.md) | Sep 14, 2026 | | Linux | google-guest-agent opensuse-leap 16.0 | 20260903.01-160000.1.1 | [OPENSUSE-SU-2026:21879-1](https://patchblox.com/security/data/fix/linux/opensuse-su-2026-21879-1.md) | Sep 18, 2026 | | Linux | google-guest-agent sles 15.6 | 20260903.01-150000.1.85.1 | [SUSE-SU-2026:4270-1](https://patchblox.com/security/data/fix/linux/suse-su-2026-4270-1.md) | Sep 21, 2026 | | Linux | google-guest-agent sles 15.7 | 20260903.01-150000.1.85.1 | [SUSE-SU-2026:4270-1](https://patchblox.com/security/data/fix/linux/suse-su-2026-4270-1.md) | Sep 21, 2026 | | Linux | google-osconfig-agent opensuse-leap 16.0 | 20260911.00-160000.1.1 | [OPENSUSE-SU-2026:21882-1](https://patchblox.com/security/data/fix/linux/opensuse-su-2026-21882-1.md) | Sep 19, 2026 | | Linux | google-osconfig-agent sles 15.6 | 20260911.00-150000.1.67.1 | [SUSE-SU-2026:4293-1](https://patchblox.com/security/data/fix/linux/suse-su-2026-4293-1.md) | Sep 23, 2026 | | Linux | google-osconfig-agent sles 15.7 | 20260911.00-150000.1.67.1 | [SUSE-SU-2026:4293-1](https://patchblox.com/security/data/fix/linux/suse-su-2026-4293-1.md) | Sep 23, 2026 | | Linux | govulncheck-vulndb opensuse-leap 16.0 | 0.0.20260916T180043-160000.1.1 | [OPENSUSE-SU-2026:21897-1](https://patchblox.com/security/data/fix/linux/opensuse-su-2026-21897-1.md) | Sep 21, 2026 | | Linux | govulncheck-vulndb sles 16.0 | 0.0.20260916T180043-160000.1.1 | [SUSE-SU-2026:23863-1](https://patchblox.com/security/data/fix/linux/suse-su-2026-23863-1.md) | Sep 21, 2026 | | Linux | hauler opensuse-leap 16.0 | 2.1.0-bp160.3.1 | [OPENSUSE-SU-2026:21841-1](https://patchblox.com/security/data/fix/linux/opensuse-su-2026-21841-1.md) | Sep 14, 2026 | | Linux | helm opensuse-leap 16.0 | 3.21.3-160000.2.1 | [OPENSUSE-SU-2026:21809-1](https://patchblox.com/security/data/fix/linux/opensuse-su-2026-21809-1.md) | Sep 8, 2026 | | Linux | helm sles 15.6 | 3.21.3-150000.1.96.1 | [SUSE-SU-2026:4175-1](https://patchblox.com/security/data/fix/linux/suse-su-2026-4175-1.md) | Sep 14, 2026 | | Linux | helm sles 15.7 | 3.21.3-150000.1.96.1 | [SUSE-SU-2026:4175-1](https://patchblox.com/security/data/fix/linux/suse-su-2026-4175-1.md) | Sep 14, 2026 | | Linux | helm sles 16.0 | 3.21.3-160000.2.1 | [SUSE-SU-2026:23688-1](https://patchblox.com/security/data/fix/linux/suse-su-2026-23688-1.md) | Sep 8, 2026 | | Linux | mcphost opensuse-leap 16.0 | 0.34.0-160000.5.1 | [OPENSUSE-SU-2026:21886-1](https://patchblox.com/security/data/fix/linux/opensuse-su-2026-21886-1.md) | Sep 20, 2026 | | Linux | rqlite opensuse-leap 16.0 | 10.6.6-bp160.1.1 | [OPENSUSE-SU-2026:22224-1](https://patchblox.com/security/data/fix/linux/opensuse-su-2026-22224-1.md) | Nov 7, 2026 | | Linux | trivy opensuse-leap 16.0 | 0.74.0-160000.2.1 | [OPENSUSE-SU-2026:21801-1](https://patchblox.com/security/data/fix/linux/opensuse-su-2026-21801-1.md) | Sep 7, 2026 | | Linux | v2ray-core opensuse-leap 16.0 | 5.54.2-bp160.1.1 | [OPENSUSE-SU-2026:21996-1](https://patchblox.com/security/data/fix/linux/opensuse-su-2026-21996-1.md) | Sep 28, 2026 | | Linux | warewulf4 opensuse-leap 16.0 | 4.7.1-bp160.2.1 | [OPENSUSE-SU-2026:22221-1](https://patchblox.com/security/data/fix/linux/opensuse-su-2026-22221-1.md) | Nov 7, 2026 | --- Data as of 2026-11-08T13:06:02Z UTC. 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