{
  "threat_severity" : "Low",
  "public_date" : "2026-06-17T17:31:03Z",
  "bugzilla" : {
    "description" : "undici: undici: Weakening of cookie SameSite policy due to incorrect parsing of Set-Cookie header",
    "id" : "2490008",
    "url" : "https://bugzilla.redhat.com/show_bug.cgi?id=2490008"
  },
  "cvss3" : {
    "cvss3_base_score" : "3.7",
    "cvss3_scoring_vector" : "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N",
    "status" : "verified"
  },
  "cwe" : "CWE-1286",
  "details" : [ "Impact:\nWhen undici parses a Set-Cookie header, it accepts any SameSite attribute value that contains Strict, Lax, or None as a substring, rather than the case-insensitive exact match specified by RFC 6265. Non-spec values are silently mapped to one of the three standard tokens. For example, SameSite=NoneOfYourBusiness is parsed as None (the most permissive setting), and SameSite=StrictLax is parsed as Lax (a downgrade from Strict).\nAffected applications are those that consume Set-Cookie headers from server responses (for example via undici's fetch or proxy code paths) and then forward or rely on the parsed sameSite attribute. A malicious or non-compliant server can coerce the consumer's view of a cookie's SameSite policy to a weaker value, silently degrading the SameSite enforcement the cookie is supposed to provide.\nThis was introduced in undici 5.15.0 when the cookies feature was added.\nPatches:\nUpgrade to undici v6.26.0, v7.28.0 or v8.5.0.\nWorkarounds:\nAfter parsing a Set-Cookie header, validate that the resulting sameSite attribute is one of 'Strict', 'Lax', or 'None' (exact, case-insensitive) before forwarding or relying on it.", "A flaw was found in undici. When undici processes Set-Cookie headers, it incorrectly interprets the SameSite attribute, accepting partial matches instead of exact ones. This allows a malicious server to downgrade a cookie's SameSite policy to a less secure setting, potentially leading to unintended information disclosure or a weakening of security protections for the user." ],
  "statement" : "This Low impact flaw in undici, as used in various Red Hat products, arises from incorrect parsing of the `SameSite` cookie attribute. A malicious server could exploit this by sending a specially crafted `Set-Cookie` header, causing the `SameSite` policy to be downgraded to a less secure setting. This could lead to a minor weakening of security protections or unintended information disclosure in applications that process and rely on these cookie attributes.",
  "affected_release" : [ {
    "product_name" : "Red Hat Enterprise Linux 10",
    "release_date" : "2026-07-06T00:00:00Z",
    "advisory" : "RHSA-2026:35841",
    "cpe" : "cpe:/o:redhat:enterprise_linux:10.2",
    "package" : "nodejs24-1:24.18.0-1.el10_2"
  }, {
    "product_name" : "Red Hat Enterprise Linux 10",
    "release_date" : "2026-07-06T00:00:00Z",
    "advisory" : "RHSA-2026:35842",
    "cpe" : "cpe:/o:redhat:enterprise_linux:10.2",
    "package" : "nodejs22-1:22.23.1-2.el10_2"
  }, {
    "product_name" : "Red Hat Enterprise Linux 8",
    "release_date" : "2026-07-15T00:00:00Z",
    "advisory" : "RHSA-2026:39868",
    "cpe" : "cpe:/a:redhat:enterprise_linux:8",
    "package" : "nodejs:24-8100020260630152626.6d880403"
  }, {
    "product_name" : "Red Hat Enterprise Linux 8",
    "release_date" : "2026-07-20T00:00:00Z",
    "advisory" : "RHSA-2026:41947",
    "cpe" : "cpe:/a:redhat:enterprise_linux:8",
    "package" : "nodejs:22-8100020260703140402.6d880403"
  }, {
    "product_name" : "Red Hat Enterprise Linux 9",
    "release_date" : "2026-07-06T00:00:00Z",
    "advisory" : "RHSA-2026:35891",
    "cpe" : "cpe:/a:redhat:enterprise_linux:9",
    "package" : "nodejs:24-9080020260626074955.rhel9"
  }, {
    "product_name" : "Red Hat Enterprise Linux 9",
    "release_date" : "2026-07-06T00:00:00Z",
    "advisory" : "RHSA-2026:35892",
    "cpe" : "cpe:/a:redhat:enterprise_linux:9",
    "package" : "nodejs:22-9080020260626075442.rhel9"
  }, {
    "product_name" : "Red Hat Hardened Images",
    "release_date" : "2026-07-11T00:00:00Z",
    "advisory" : "RHSA-2026:38236",
    "cpe" : "cpe:/a:redhat:hummingbird:1",
    "package" : "nodejs24-main-24.18.0-0.3.hum1"
  } ],
  "package_state" : [ {
    "product_name" : "Cryostat 4",
    "fix_state" : "Fix deferred",
    "package_name" : "cryostat-openshift-console-plugin-npm",
    "cpe" : "cpe:/a:redhat:cryostat:4"
  }, {
    "product_name" : "Cryostat 4",
    "fix_state" : "Fix deferred",
    "package_name" : "grafana-infinity-datasource-npm",
    "cpe" : "cpe:/a:redhat:cryostat:4"
  }, {
    "product_name" : "Cryostat 4",
    "fix_state" : "Fix deferred",
    "package_name" : "undici",
    "cpe" : "cpe:/a:redhat:cryostat:4"
  }, {
    "product_name" : "OpenShift Pipelines",
    "fix_state" : "Fix deferred",
    "package_name" : "openshift-pipelines/pipelines-console-plugin-pf5-rhel9",
    "cpe" : "cpe:/a:redhat:openshift_pipelines:1"
  }, {
    "product_name" : "OpenShift Pipelines",
    "fix_state" : "Fix deferred",
    "package_name" : "openshift-pipelines/pipelines-console-plugin-rhel8",
    "cpe" : "cpe:/a:redhat:openshift_pipelines:1"
  }, {
    "product_name" : "OpenShift Pipelines",
    "fix_state" : "Fix deferred",
    "package_name" : "openshift-pipelines/pipelines-console-plugin-rhel9",
    "cpe" : "cpe:/a:redhat:openshift_pipelines:1"
  }, {
    "product_name" : "Red Hat AMQ Broker 7",
    "fix_state" : "Fix deferred",
    "package_name" : "undici",
    "cpe" : "cpe:/a:redhat:amq_broker:7"
  }, {
    "product_name" : "Red Hat Build of Podman Desktop",
    "fix_state" : "Fix deferred",
    "package_name" : "rh-podman-desktop.git",
    "cpe" : "cpe:/a:redhat:podman_desktop:1"
  }, {
    "product_name" : "Red Hat Developer Hub",
    "fix_state" : "Fix deferred",
    "package_name" : "rhdh/rhdh-hub-rhel9",
    "cpe" : "cpe:/a:redhat:rhdh:1"
  }, {
    "product_name" : "Red Hat Enterprise Linux 8",
    "fix_state" : "Fix deferred",
    "package_name" : "nodejs",
    "cpe" : "cpe:/o:redhat:enterprise_linux:8"
  }, {
    "product_name" : "Red Hat Hardened Images",
    "fix_state" : "Fix deferred",
    "package_name" : "nodejs25",
    "cpe" : "cpe:/a:redhat:hummingbird:1"
  }, {
    "product_name" : "Red Hat Hardened Images",
    "fix_state" : "Affected",
    "package_name" : "nodejs26",
    "cpe" : "cpe:/a:redhat:hummingbird:1"
  }, {
    "product_name" : "Red Hat Hardened Images",
    "fix_state" : "Affected",
    "package_name" : "rust",
    "cpe" : "cpe:/a:redhat:hummingbird:1"
  }, {
    "product_name" : "Red Hat OpenShift AI (RHOAI)",
    "fix_state" : "Fix deferred",
    "package_name" : "rhoai/odh-dashboard-rhel9",
    "cpe" : "cpe:/a:redhat:openshift_ai"
  }, {
    "product_name" : "Red Hat OpenShift AI (RHOAI)",
    "fix_state" : "Fix deferred",
    "package_name" : "rhoai/odh-mod-arch-automl-rhel9",
    "cpe" : "cpe:/a:redhat:openshift_ai"
  }, {
    "product_name" : "Red Hat OpenShift AI (RHOAI)",
    "fix_state" : "Fix deferred",
    "package_name" : "rhoai/odh-mod-arch-autorag-rhel9",
    "cpe" : "cpe:/a:redhat:openshift_ai"
  }, {
    "product_name" : "Red Hat OpenShift AI (RHOAI)",
    "fix_state" : "Fix deferred",
    "package_name" : "rhoai/odh-mod-arch-eval-hub-rhel9",
    "cpe" : "cpe:/a:redhat:openshift_ai"
  }, {
    "product_name" : "Red Hat OpenShift AI (RHOAI)",
    "fix_state" : "Fix deferred",
    "package_name" : "rhoai/odh-mod-arch-gen-ai-rhel9",
    "cpe" : "cpe:/a:redhat:openshift_ai"
  }, {
    "product_name" : "Red Hat OpenShift AI (RHOAI)",
    "fix_state" : "Fix deferred",
    "package_name" : "rhoai/odh-mod-arch-maas-rhel9",
    "cpe" : "cpe:/a:redhat:openshift_ai"
  }, {
    "product_name" : "Red Hat OpenShift AI (RHOAI)",
    "fix_state" : "Fix deferred",
    "package_name" : "rhoai/odh-mod-arch-mlflow-rhel9",
    "cpe" : "cpe:/a:redhat:openshift_ai"
  }, {
    "product_name" : "Red Hat OpenShift AI (RHOAI)",
    "fix_state" : "Fix deferred",
    "package_name" : "rhoai/odh-mod-arch-model-registry-rhel9",
    "cpe" : "cpe:/a:redhat:openshift_ai"
  }, {
    "product_name" : "Red Hat OpenShift AI (RHOAI)",
    "fix_state" : "Fix deferred",
    "package_name" : "rhoai/odh-workbench-codeserver-datascience-cpu-py312-rhel9",
    "cpe" : "cpe:/a:redhat:openshift_ai"
  }, {
    "product_name" : "Red Hat OpenShift Container Platform 4",
    "fix_state" : "Fix deferred",
    "package_name" : "openshift4/ose-agent-installer-ui-rhel9",
    "cpe" : "cpe:/a:redhat:openshift:4"
  }, {
    "product_name" : "Red Hat OpenShift Container Platform 4",
    "fix_state" : "Fix deferred",
    "package_name" : "openshift4/ose-console-rhel9",
    "cpe" : "cpe:/a:redhat:openshift:4"
  }, {
    "product_name" : "Red Hat OpenShift Container Platform 4",
    "fix_state" : "Fix deferred",
    "package_name" : "openshift4/ose-monitoring-plugin-rhel9",
    "cpe" : "cpe:/a:redhat:openshift:4"
  }, {
    "product_name" : "Red Hat Openshift Data Foundation 4",
    "fix_state" : "Fix deferred",
    "package_name" : "odf4/ocs-client-console-rhel9",
    "cpe" : "cpe:/a:redhat:openshift_data_foundation:4"
  }, {
    "product_name" : "Red Hat Openshift Data Foundation 4",
    "fix_state" : "Fix deferred",
    "package_name" : "odf4/odf-console-rhel9",
    "cpe" : "cpe:/a:redhat:openshift_data_foundation:4"
  }, {
    "product_name" : "Red Hat Openshift Data Foundation 4",
    "fix_state" : "Fix deferred",
    "package_name" : "odf4/odf-multicluster-console-rhel9",
    "cpe" : "cpe:/a:redhat:openshift_data_foundation:4"
  }, {
    "product_name" : "Red Hat OpenShift Dev Spaces",
    "fix_state" : "Fix deferred",
    "package_name" : "devspaces/code-rhel9",
    "cpe" : "cpe:/a:redhat:openshift_devspaces:3"
  }, {
    "product_name" : "Red Hat OpenShift Dev Spaces",
    "fix_state" : "Fix deferred",
    "package_name" : "devspaces/dashboard-rhel9",
    "cpe" : "cpe:/a:redhat:openshift_devspaces:3"
  }, {
    "product_name" : "Red Hat OpenShift Dev Spaces",
    "fix_state" : "Fix deferred",
    "package_name" : "devspaces/openvsx-rhel9",
    "cpe" : "cpe:/a:redhat:openshift_devspaces:3"
  }, {
    "product_name" : "Red Hat OpenShift Dev Spaces",
    "fix_state" : "Fix deferred",
    "package_name" : "devspaces/pluginregistry-rhel9",
    "cpe" : "cpe:/a:redhat:openshift_devspaces:3"
  }, {
    "product_name" : "Self-service automation portal 2",
    "fix_state" : "Fix deferred",
    "package_name" : "ansible-automation-platform/automation-portal",
    "cpe" : "cpe:/a:redhat:ansible_portal:2"
  }, {
    "product_name" : "Self-service automation portal 2",
    "fix_state" : "Fix deferred",
    "package_name" : "ansible-automation-platform/bootc-automation-portal-rhel9",
    "cpe" : "cpe:/a:redhat:ansible_portal:2"
  } ],
  "references" : [ "https://www.cve.org/CVERecord?id=CVE-2026-11525\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-11525\nhttps://cna.openjsf.org/security-advisories.html\nhttps://github.com/nodejs/undici/security/advisories/GHSA-g8m3-5g58-fq7m" ],
  "name" : "CVE-2026-11525",
  "mitigation" : {
    "value" : "Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base or stability.",
    "lang" : "en:us"
  },
  "csaw" : false
}