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{"bugzilla": {"description": "github.com/tektoncd/pipeline: Tekton Pipelines: Information disclosure of Git API token via user-controlled serverURL", "id": "2460173", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2460173"}, "csaw": false, "cvss3": {"cvss3_base_score": "7.7", "cvss3_scoring_vector": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N", "status": "draft"}, "cwe": "CWE-918", "details": ["A flaw was found in Tekton Pipelines. A tenant with permissions to create TaskRun or PipelineRun resources can exploit this vulnerability. By omitting the Git API token parameter and pointing the serverURL to an attacker-controlled endpoint, the system-configured Git API token (such as a GitHub Personal Access Token or GitLab token) can be sent to the attacker. This information disclosure allows for the exfiltration of sensitive API tokens."], "name": "CVE-2026-40161", "package_state": [{"cpe": "cpe:/a:redhat:openshift_builds:1", "fix_state": "Affected", "package_name": "openshift-builds/openshift-builds-controller-rhel9", "product_name": "Builds for Red Hat OpenShift"}, {"cpe": "cpe:/a:redhat:openshift_builds:1", "fix_state": "Affected", "package_name": "openshift-builds/openshift-builds-git-cloner-rhel9", "product_name": "Builds for Red Hat OpenShift"}, {"cpe": "cpe:/a:redhat:openshift_builds:1", "fix_state": "Affected", "package_name": "openshift-builds/openshift-builds-image-bundler-rhel9", "product_name": "Builds for Red Hat OpenShift"}, {"cpe": "cpe:/a:redhat:openshift_builds:1", "fix_state": "Affected", "package_name": "openshift-builds/openshift-builds-image-processing-rhel9", "product_name": "Builds for Red Hat OpenShift"}, {"cpe": "cpe:/a:redhat:openshift_builds:1", "fix_state": "Affected", "package_name": 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"product_name": "OpenShift Pipelines"}, {"cpe": "cpe:/a:redhat:openshift_pipelines:1", "fix_state": "Not affected", "package_name": "openshift-pipelines/pipelines-cli-tkn-rhel8", "product_name": "OpenShift Pipelines"}, {"cpe": "cpe:/a:redhat:openshift_pipelines:1", "fix_state": "Affected", "package_name": "openshift-pipelines/pipelines-cli-tkn-rhel9", "product_name": "OpenShift Pipelines"}, {"cpe": "cpe:/a:redhat:openshift_pipelines:1", "fix_state": "Not affected", "package_name": "openshift-pipelines/pipelines-controller-rhel8", "product_name": "OpenShift Pipelines"}, {"cpe": "cpe:/a:redhat:openshift_pipelines:1", "fix_state": "Not affected", "package_name": "openshift-pipelines/pipelines-controller-rhel9", "product_name": "OpenShift Pipelines"}, {"cpe": "cpe:/a:redhat:openshift_pipelines:1", "fix_state": "Not affected", "package_name": "openshift-pipelines/pipelines-entrypoint-rhel8", "product_name": "OpenShift Pipelines"}, {"cpe": "cpe:/a:redhat:openshift_pipelines:1", "fix_state": "Not affected", "package_name": "openshift-pipelines/pipelines-entrypoint-rhel9", "product_name": "OpenShift Pipelines"}, {"cpe": "cpe:/a:redhat:openshift_pipelines:1", "fix_state": "Not affected", "package_name": "openshift-pipelines/pipelines-events-rhel8", "product_name": "OpenShift Pipelines"}, {"cpe": "cpe:/a:redhat:openshift_pipelines:1", "fix_state": "Not affected", "package_name": "openshift-pipelines/pipelines-events-rhel9", "product_name": "OpenShift Pipelines"}, {"cpe": "cpe:/a:redhat:openshift_pipelines:1", "fix_state": "Not affected", "package_name": "openshift-pipelines/pipelines-git-init-rhel8", "product_name": "OpenShift Pipelines"}, {"cpe": "cpe:/a:redhat:openshift_pipelines:1", "fix_state": "Not affected", "package_name": "openshift-pipelines/pipelines-git-init-rhel9", "product_name": "OpenShift Pipelines"}, {"cpe": "cpe:/a:redhat:openshift_pipelines:1", "fix_state": "Not affected", "package_name": "openshift-pipelines/pipelines-hub-api-rhel8", "product_name": 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{"cpe": "cpe:/a:redhat:openshift_pipelines:1", "fix_state": "Not affected", "package_name": "openshift-pipelines/pipelines-nop-rhel8", "product_name": "OpenShift Pipelines"}, {"cpe": "cpe:/a:redhat:openshift_pipelines:1", "fix_state": "Not affected", "package_name": "openshift-pipelines/pipelines-nop-rhel9", "product_name": "OpenShift Pipelines"}, {"cpe": "cpe:/a:redhat:openshift_pipelines:1", "fix_state": "Affected", "package_name": "openshift-pipelines/pipelines-opc-rhel9", "product_name": "OpenShift Pipelines"}, {"cpe": "cpe:/a:redhat:openshift_pipelines:1", "fix_state": "Not affected", "package_name": "openshift-pipelines/pipelines-operator-proxy-rhel8", "product_name": "OpenShift Pipelines"}, {"cpe": "cpe:/a:redhat:openshift_pipelines:1", "fix_state": "Affected", "package_name": "openshift-pipelines/pipelines-operator-proxy-rhel9", "product_name": "OpenShift Pipelines"}, {"cpe": "cpe:/a:redhat:openshift_pipelines:1", "fix_state": "Not affected", "package_name": 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"openshift-pipelines/pipelines-triggers-webhook-rhel9", "product_name": "OpenShift Pipelines"}, {"cpe": "cpe:/a:redhat:openshift_pipelines:1", "fix_state": "Not affected", "package_name": "openshift-pipelines/pipelines-webhook-rhel8", "product_name": "OpenShift Pipelines"}, {"cpe": "cpe:/a:redhat:openshift_pipelines:1", "fix_state": "Not affected", "package_name": "openshift-pipelines/pipelines-webhook-rhel9", "product_name": "OpenShift Pipelines"}, {"cpe": "cpe:/a:redhat:openshift_pipelines:1", "fix_state": "Not affected", "package_name": "openshift-pipelines/pipelines-workingdirinit-rhel8", "product_name": "OpenShift Pipelines"}, {"cpe": "cpe:/a:redhat:openshift_pipelines:1", "fix_state": "Not affected", "package_name": "openshift-pipelines/pipelines-workingdirinit-rhel9", "product_name": "OpenShift Pipelines"}, {"cpe": "cpe:/a:redhat:serverless:1", "fix_state": "Not affected", "package_name": "openshift-serverless-1/kn-client-kn-rhel9", "product_name": "OpenShift Serverless"}, {"cpe": "cpe:/a:redhat:serverless:1", "fix_state": "Not affected", "package_name": "openshift-serverless-1/kn-plugin-func-func-util-rhel9", "product_name": "OpenShift Serverless"}, {"cpe": "cpe:/a:redhat:openshift_ai", "fix_state": "Not affected", "package_name": "rhoai/odh-ml-pipelines-api-server-v2-rhel8", "product_name": "Red Hat OpenShift AI (RHOAI)"}, {"cpe": "cpe:/a:redhat:openshift_ai", "fix_state": "Not affected", "package_name": "rhoai/odh-ml-pipelines-driver-rhel8", "product_name": "Red Hat OpenShift AI (RHOAI)"}, {"cpe": "cpe:/a:redhat:openshift_ai", "fix_state": "Not affected", "package_name": "rhoai/odh-ml-pipelines-launcher-rhel8", "product_name": "Red Hat OpenShift AI (RHOAI)"}, {"cpe": "cpe:/a:redhat:openshift_ai", "fix_state": "Not affected", "package_name": "rhoai/odh-ml-pipelines-persistenceagent-v2-rhel8", "product_name": "Red Hat OpenShift AI (RHOAI)"}, {"cpe": "cpe:/a:redhat:openshift_ai", "fix_state": "Not affected", "package_name": "rhoai/odh-ml-pipelines-scheduledworkflow-v2-rhel8", "product_name": "Red Hat OpenShift AI (RHOAI)"}, {"cpe": "cpe:/a:redhat:container_native_virtualization:4", "fix_state": "Not affected", "package_name": "container-native-virtualization/kubevirt-ssp-operator-rhel9", "product_name": "Red Hat OpenShift Virtualization 4"}, {"cpe": "cpe:/a:redhat:container_native_virtualization:4", "fix_state": "Out of support scope", "package_name": "container-native-virtualization/kubevirt-tekton-tasks-create-datavolume-rhel9", "product_name": "Red Hat OpenShift Virtualization 4"}, {"cpe": "cpe:/a:redhat:container_native_virtualization:4", "fix_state": "Out of support scope", "package_name": "container-native-virtualization/kubevirt-tekton-tasks-disk-virt-customize-rhel9", "product_name": "Red Hat OpenShift Virtualization 4"}, {"cpe": "cpe:/a:redhat:container_native_virtualization:4", "fix_state": "Not affected", "package_name": "container-native-virtualization/kubevirt-template-validator-rhel9", "product_name": "Red Hat OpenShift Virtualization 4"}, {"cpe": "cpe:/a:redhat:trusted_artifact_signer:1", "fix_state": "Not affected", "package_name": "rhtas/ec-rhel9", "product_name": "Red Hat Trusted Artifact Signer"}], "public_date": "2026-04-21T16:26:27Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-40161\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-40161\nhttps://github.com/tektoncd/pipeline/issues/9608\nhttps://github.com/tektoncd/pipeline/issues/9609\nhttps://github.com/tektoncd/pipeline/security/advisories/GHSA-wjxp-xrpv-xpff"], "threat_severity": "Moderate"}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[1.0.0,1.10.0]"}}], "enrichment": {"confidence": 100.0, "confidence_source": "matching", "scores": [{"score": 100.0, "source": "matching"}]}, "original": {"product": "pipeline", "source": "cna", "vendor": "tektoncd"}, "product": "pipeline", "vendor": "tektoncd"}], "analysis": {"en": {"generated_at": "2026-04-28T16:16:25.198015+00:00", "value": {"mitigation_remediation": ["Upgrade Tekton Pipelines to the latest stable release where the Git resolver no longer transmits the system\u2011configured token when the token field is omitted.", "Restrict privileges so that only trusted users can create PipelineRun or TaskRun resources, thereby limiting the ability to supply arbitrary serverURLs.", "Enforce network policies or firewall rules to block outbound traffic from Tekton pods to unknown external endpoints, preventing exfiltration of credentials to attacker\u2011controlled servers."], "summary": {"action": "Immediate Patch", "impact": "Exfiltration of privileged API token via a user\u2011controlled serverURL"}, "threat_synthesis": {"affected_systems": "The flaw affects the Tekton Pipelines product, versions 1.0.0 through 1.10.0. A tenant who has permission to create a TaskRun or PipelineRun can exploit this and direct the resolver to an attacker\u2011controlled endpoint to capture the API token.", "description_and_impact": "The vulnerability occurs when the Git resolver in Tekton Pipelines operates in API mode and the user omits the token parameter. Under these conditions, the resolver inadvertently sends the system\u2011configured Git API token\u2014such as a GitHub personal access token or GitLab token\u2014to the serverURL supplied by the user. This leak constitutes unintended information exposure (CWE\u2011201) and represents an insecure handling of configuration credentials (CWE\u2011918), allowing an attacker to obtain a credential that is generally trusted to perform actions on the developer\u2019s behalf, potentially leading to downstream compromise of source\u2011code repositories or other services that rely on the token.", "risk_and_exploitability": "The CVSS score of 7.7 indicates high impact for the affected users. The EPSS score is 0.00032 (< 1%), a very low but non\u2011zero exploitation probability, and the vulnerability is not listed in the CISA KEV catalog, the attack vector requires local cluster access to create a run and a configurable serverURL. An attacker with the necessary permissions can directly exfiltrate the token, enabling unauthorized access to Git services. While exploitation is straightforward for an internal attacker, external exploitation would need a foothold with sufficient permissions."}}}}, "created": "2026-04-21T19:00:35.929728+00:00", "updated": "2026-04-28T16:30:35.082827+00:00", "vendors": ["tektoncd", "tektoncd$PRODUCT$pipeline"]}