CVE-2026-72816

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{"bugzilla": {"description": "github.com/go-chi/chi: go-chi/chi: IP Spoofing via RealIP Middleware allows bypassing access controls", "id": "2515985", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2515985"}, "csaw": false, "cvss3": {"cvss3_base_score": "6.5", "cvss3_scoring_vector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N", "status": "draft"}, "cwe": "CWE-346", "details": ["A flaw was found in the go-chi/chi RealIP middleware. This vulnerability allows a remote attacker to perform IP spoofing by supplying arbitrary IP addresses in client-controlled headers. This can lead to bypassing IP-based access controls, evading rate limiting and geo-IP restrictions, and polluting audit logs."], "mitigation": {"lang": "en:us", "value": "Do not use the `chi/middleware.RealIP` middleware when receiving traffic directly from untrusted networks or unverified proxies. Instead, strip or sanitize client-supplied forwarding headers at an upstream edge proxy or reverse proxy (such as NGINX or HAProxy) before requests reach the application."}, "name": "CVE-2026-72816", "package_state": [{"cpe": "cpe:/a:redhat:cryostat:4", "fix_state": "Fix deferred", "package_name": "cryostat/cryostat-storage-rhel9", "product_name": "Cryostat 4"}, {"cpe": "cpe:/a:redhat:external_secrets_operator:1", "fix_state": "Fix deferred", "package_name": "external-secrets-operator/bitwarden-sdk-server-rhel9", "product_name": "External Secrets Operator for Red Hat OpenShift"}, {"cpe": "cpe:/a:redhat:gatekeeper:3", "fix_state": "Fix deferred", "package_name": "gatekeeper/gatekeeper-rhel9", "product_name": "Gatekeeper 3"}, {"cpe": "cpe:/a:redhat:logging:6", "fix_state": "Fix deferred", "package_name": "openshift-logging/opa-openshift-rhel9", "product_name": "Logging Subsystem for Red Hat OpenShift"}, {"cpe": "cpe:/a:redhat:migration_toolkit_applications:8", "fix_state": "Fix deferred", "package_name": "mta/mta-hub-rhel9", "product_name": "Migration Toolkit for Applications 8"}, {"cpe": "cpe:/a:redhat:multicluster_engine", "fix_state": "Fix deferred", "package_name": "multicluster-engine/assisted-image-service-rhel8", "product_name": "Multicluster Engine for Kubernetes"}, {"cpe": "cpe:/a:redhat:multicluster_engine", "fix_state": "Fix deferred", "package_name": "multicluster-engine/assisted-image-service-rhel9", "product_name": "Multicluster Engine for Kubernetes"}, {"cpe": "cpe:/a:redhat:openshift_pipelines:1", "fix_state": "Fix deferred", "package_name": "openshift-pipelines-client", "product_name": "OpenShift Pipelines"}, {"cpe": "cpe:/a:redhat:openshift_pipelines:1", "fix_state": "Not affected", "package_name": "openshift-pipelines/pipelines-opc-rhel9", "product_name": "OpenShift Pipelines"}, {"cpe": "cpe:/a:redhat:serverless:1", "fix_state": "Fix deferred", "package_name": "openshift-serverless-1/kn-plugin-event-sender-rhel9", "product_name": "OpenShift Serverless"}, {"cpe": "cpe:/a:redhat:acm:2", "fix_state": "Fix deferred", "package_name": "flightctl", "product_name": "Red Hat Advanced Cluster Management for Kubernetes 2"}, {"cpe": "cpe:/a:redhat:acm:2", "fix_state": "Fix deferred", "package_name": "rhacm2/observatorium-rhel9", "product_name": "Red Hat Advanced Cluster Management for Kubernetes 2"}, {"cpe": "cpe:/a:redhat:acm:2", "fix_state": "Fix deferred", "package_name": "rhacm2/volsync-rhel9", "product_name": "Red Hat Advanced Cluster Management for Kubernetes 2"}, {"cpe": "cpe:/a:redhat:advanced_cluster_security:4", "fix_state": "Not affected", "package_name": "advanced-cluster-security/rhacs-main-rhel8", "product_name": "Red Hat Advanced Cluster Security 4"}, {"cpe": "cpe:/a:redhat:advanced_cluster_security:4", "fix_state": "Not affected", "package_name": "advanced-cluster-security/rhacs-main-rhel9", "product_name": "Red Hat Advanced Cluster Security 4"}, {"cpe": "cpe:/a:redhat:edge_manager:1", "fix_state": "Fix deferred", 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deferred", "package_name": "spire1.15", "product_name": "Red Hat Hardened Images"}, {"cpe": "cpe:/a:redhat:openshift_ai", "fix_state": "Fix deferred", "package_name": "rhoai/odh-model-registry-rhel9", "product_name": "Red Hat OpenShift AI (RHOAI)"}, {"cpe": "cpe:/a:redhat:openshift:4", "fix_state": "Fix deferred", "package_name": "cri-o", "product_name": "Red Hat OpenShift Container Platform 4"}, {"cpe": "cpe:/a:redhat:openshift:4", "fix_state": "Fix deferred", "package_name": "openshift4/ose-telemeter", "product_name": "Red Hat OpenShift Container Platform 4"}, {"cpe": "cpe:/a:redhat:openshift_devspaces:3", "fix_state": "Fix deferred", "package_name": "devspaces/udi-rhel9", "product_name": "Red Hat OpenShift Dev Spaces"}, {"cpe": "cpe:/a:redhat:openshift_distributed_tracing:3", "fix_state": "Fix deferred", "package_name": "rhosdt/tempo-gateway-rhel9", "product_name": "Red Hat OpenShift distributed tracing 3"}, {"cpe": "cpe:/a:redhat:quay:3", "fix_state": "Fix deferred", "package_name": "quay/quay-rhel8", "product_name": "Red Hat Quay 3"}, {"cpe": "cpe:/a:redhat:quay:3", "fix_state": "Fix deferred", "package_name": "quay/quay-rhel9", "product_name": "Red Hat Quay 3"}, {"cpe": "cpe:/a:redhat:satellite:6", "fix_state": "Fix deferred", "package_name": "satellite/iop-ingress-rhel9", "product_name": "Red Hat Satellite 6"}, {"cpe": "cpe:/a:redhat:trusted_artifact_signer:1", "fix_state": "Not affected", "package_name": "rhtas/ec-rhel9", "product_name": "Red Hat Trusted Artifact Signer"}, {"cpe": "cpe:/a:redhat:webterminal:1", "fix_state": "Fix deferred", "package_name": "web-terminal/web-terminal-tooling-rhel9", "product_name": "Red Hat Web Terminal"}, {"cpe": "cpe:/a:redhat:openshift_security_profiles_operator:1", "fix_state": "Fix deferred", "package_name": "compliance/openshift-selinuxd-rhel8", "product_name": "Security Profiles Operator"}, {"cpe": "cpe:/a:redhat:zero_trust_workload_identity_manager:1", "fix_state": "Not affected", "package_name": "zero-trust-workload-identity-manager/spiffe-spire-agent-rhel9", "product_name": "Zero Trust Workload Identity Manager"}, {"cpe": "cpe:/a:redhat:zero_trust_workload_identity_manager:0", "fix_state": "Fix deferred", "package_name": "zero-trust-workload-identity-manager/spiffe-spire-agent-rhel9", "product_name": "Zero Trust Workload Identity Manager - Tech Preview"}], "public_date": "2026-08-14T11:35:28Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-72816\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-72816\nhttps://github.com/go-chi/chi/security/advisories/GHSA-rjr7-jggh-pgcp\nhttps://www.vulncheck.com/advisories/go-chi-chi-before-ip-spoofing-via-realip-middleware"], "statement": "An IP spoofing flaw exists in go-chi/chi's RealIP middleware (middleware/realip.go). The realIP() function parses untrusted HTTP headers (True-Client-IP, X-Real-IP, X-Forwarded-For) and overwrites r.RemoteAddr without validating upstream proxy identity. Remote unauthenticated attackers can supply arbitrary IP values in these headers to bypass IP-restricted endpoints, subvert rate-limiting controls, or poison application audit logs, posing a Low impact to confidentiality and integrity.", "threat_severity": "Moderate"}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[0,5.3.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "5.3.0"}}], "enrichment": {"confidence": 100.0, "confidence_source": "matching", "scores": [{"score": 100.0, "source": "matching"}]}, "original": {"product": "chi", "source": "cna", "vendor": "go-chi"}, "product": "chi", "vendor": "go-chi"}], "created": "2026-08-14T13:00:10.981634+00:00", "updated": "2026-08-22T10:15:04.772732+00:00", "vendors": ["go-chi", "go-chi$PRODUCT$chi"]}