{ "document": { "category": "csaf_base", "csaf_version": "2.0", "distribution": { "tlp": { "label": "WHITE" } }, "lang": "en", "notes": [ { "category": "legal_disclaimer", "text": "The Netherlands Cyber Security Center (henceforth: NCSC-NL) maintains this portal to enhance access to its information and vulnerabilities. The use of this information is subject to the following terms and conditions:\n\nThe vulnerabilities disclosed in this portal are gathered by NCSC-NL from a variety of open sources, which the user can retrieve from other platforms. NCSC-NL makes every reasonable effort to ensure that the content of this portal is kept up to date, and that it is accurate and complete. Nevertheless, NCSC-NL cannot entirely rule out the possibility of errors, and therefore cannot give any warranty in respect of its completeness, accuracy or real-time keeping up-to-date. NCSC-NL does not control nor guarantee the accuracy, relevance, timeliness or completeness of information obtained from these external sources. The vulnerabilities disclosed in this portal are intended solely for the convenience of professional parties to take appropriate measures to manage the risks posed to the cybersecurity. No rights can be derived from the information provided therein.\n\nNCSC-NL and the Kingdom of the Netherlands assume no legal liability or responsibility for any damage resulting from either the use or inability of use of the vulnerabilities disclosed in this portal. This includes damage resulting from the inaccuracy of incompleteness of the information contained in it.\nThe information on this page is subject to Dutch law. All disputes related to or arising from the use of this portal regarding the disclosure of vulnerabilities will be submitted to the competent court in The Hague. This choice of means also applies to the court in summary proceedings." } ], "publisher": { "category": "coordinator", "contact_details": "cert@ncsc.nl", "name": "National Cyber Security Centre", "namespace": "https://www.ncsc.nl/" }, "title": "CVE-2026-32947", "tracking": { "current_release_date": "2026-03-25T07:27:57.977313Z", "generator": { "date": "2026-02-17T15:00:00Z", "engine": { "name": "V.E.L.M.A", "version": "1.7" } }, "id": "CVE-2026-32947", "initial_release_date": "2026-03-17T19:12:01.078471Z", "revision_history": [ { "date": "2026-03-17T19:12:01.078471Z", "number": "1", "summary": "CVE created.| Source created.| CVE status created. (valid)| Description created for source.| CVSS created.| References created (3).| CWES updated (1)." }, { "date": "2026-03-19T11:40:26.196827Z", "number": "2", "summary": "Source created.| CVE status created. (valid)| Description created for source.| CVSS created.| References created (3).| CWES updated (1)." }, { "date": "2026-03-19T11:40:28.985326Z", "number": "3", "summary": "NCSC Score created." }, { "date": "2026-03-20T18:25:49.904453Z", "number": "4", "summary": "Source created.| CVE status created. (valid)| Description created for source.| CVSS created.| Products created (1).| References created (2).| CWES updated (1)." }, { "date": "2026-03-20T18:25:55.091938Z", "number": "5", "summary": "NCSC Score updated." }, { "date": "2026-03-20T18:29:42.574059Z", "number": "6", "summary": "Source created.| CVE status created. (valid)| Description created for source.| CVSS created.| References created (2).| CWES updated (1)." }, { "date": "2026-03-20T18:29:44.771095Z", "number": "7", "summary": "NCSC Score updated." }, { "date": "2026-03-20T18:35:52.452093Z", "number": "8", "summary": "Unknown change." }, { "date": "2026-03-20T21:41:45.210232Z", "number": "9", "summary": "References created (1)." }, { "date": "2026-03-20T21:59:18.499625Z", "number": "10", "summary": "Source connected.| CVE status created. (valid)| EPSS created." }, { "date": "2026-03-20T21:59:22.532339Z", "number": "11", "summary": "NCSC Score updated." }, { "date": "2026-03-21T00:28:50.459305Z", "number": "12", "summary": "Source created.| CVE status created. (valid)| Description created for source.| CVSS created.| Products connected (16).| Product Identifiers created (4).| References created (4).| CWES updated (1).| Vendor_assessment created." }, { "date": "2026-03-21T00:28:54.272386Z", "number": "13", "summary": "NCSC Score updated." }, { "date": "2026-03-21T13:47:30.525577Z", "number": "14", "summary": "References removed (1)." }, { "date": "2026-03-22T00:51:56.747532Z", "number": "15", "summary": "References created (1)." }, { "date": "2026-03-22T11:24:58.432898Z", "number": "16", "summary": "References removed (1)." }, { "date": "2026-03-23T00:54:07.994978Z", "number": "17", "summary": "References created (1)." }, { "date": "2026-03-23T05:16:04.086161Z", "number": "18", "summary": "References removed (1)." }, { "date": "2026-03-24T20:49:18.334036Z", "number": "19", "summary": "CVSS created.| Products created (1).| Product Identifiers created (1)." }, { "date": "2026-03-24T20:49:22.033775Z", "number": "20", "summary": "NCSC Score updated." }, { "date": "2026-03-24T20:56:30.698808Z", "number": "21", "summary": "References created (1)." } ], "status": "interim", "version": "21" } }, "product_tree": { "branches": [ { "branches": [ { "branches": [ { "category": "product_version_range", "name": "vers:rpm/1", "product": { "name": "vers:rpm/1", "product_id": "CSAFPID-5207390", "product_identification_helper": { "cpe": "cpe:/a:redhat:external_secrets_operator:1" } } } ], "category": "product_name", "name": "External Secrets Operator for Red Hat OpenShift" }, { "branches": [ { "category": "product_version_range", "name": "vers:rpm/3", "product": { "name": "vers:rpm/3", "product_id": "CSAFPID-2914692", "product_identification_helper": { "cpe": "cpe:/a:redhat:gatekeeper:3" } } } ], "category": "product_name", "name": "Gatekeeper 3" }, { "branches": [ { "category": "product_version_range", "name": "vers:rpm/unknown", "product": { "name": "vers:rpm/unknown", "product_id": "CSAFPID-1441056", "product_identification_helper": { "cpe": "cpe:/a:redhat:multicluster_engine" } } } ], "category": "product_name", "name": "Multicluster Engine for Kubernetes" }, { "branches": [ { "category": "product_version_range", "name": "vers:rpm/unknown", "product": { "name": "vers:rpm/unknown", "product_id": "CSAFPID-2858789", "product_identification_helper": { "cpe": "cpe:/a:redhat:windows_machine_config" } } } ], "category": "product_name", "name": "Red Hat OpenShift for Windows Containers" }, { "branches": [ { "branches": [ { "category": "product_version_range", "name": "vers:rpm/unknown", "product": { "name": "vers:rpm/unknown", "product_id": "CSAFPID-2485098" } } ], "category": "product_name", "name": "addon-manager-rhel9" }, { "branches": [ { "category": "product_version_range", "name": "vers:rpm/unknown", "product": { "name": "vers:rpm/unknown", "product_id": "CSAFPID-2914728" } } ], "category": "product_name", "name": "placement-rhel9" }, { "branches": [ { "category": "product_version_range", "name": "vers:rpm/unknown", "product": { "name": "vers:rpm/unknown", "product_id": "CSAFPID-2914731" } } ], "category": "product_name", "name": "registration-operator-rhel9" }, { "branches": [ { "category": "product_version_range", "name": "vers:rpm/unknown", "product": { "name": "vers:rpm/unknown", "product_id": "CSAFPID-2914732" } } ], "category": "product_name", "name": "registration-rhel9" }, { "branches": [ { "category": "product_version_range", "name": "vers:rpm/unknown", "product": { "name": "vers:rpm/unknown", "product_id": "CSAFPID-2914733" } } ], "category": "product_name", "name": "work-rhel9" } ], "category": "product_family", "name": "Multicluster Engine for Kubernetes" }, { "branches": [ { "branches": [ { "category": "product_version_range", "name": "vers:rpm/unknown", "product": { "name": "vers:rpm/unknown", "product_id": "CSAFPID-5264795" } } ], "category": "product_name", "name": "bitwarden-sdk-server-rhel9" }, { "branches": [ { "category": "product_version_range", "name": "vers:rpm/unknown", "product": { "name": "vers:rpm/unknown", "product_id": "CSAFPID-5264796" } } ], "category": "product_name", "name": "external-secrets-operator-bundle" }, { "branches": [ { "category": "product_version_range", "name": "vers:rpm/unknown", "product": { "name": "vers:rpm/unknown", "product_id": "CSAFPID-5264797" } } ], "category": "product_name", "name": "external-secrets-operator-rhel9" }, { "branches": [ { "category": "product_version_range", "name": "vers:rpm/unknown", "product": { "name": "vers:rpm/unknown", "product_id": "CSAFPID-5207391" } } ], "category": "product_name", "name": "external-secrets-rhel9" } ], "category": "product_family", "name": "External Secrets Operator for Red Hat OpenShift" }, { "branches": [ { "branches": [ { "category": "product_version_range", "name": "vers:rpm/unknown", "product": { "name": "vers:rpm/unknown", "product_id": "CSAFPID-2914693" } } ], "category": "product_name", "name": "gatekeeper-rhel9" } ], "category": "product_family", "name": "Gatekeeper 3" }, { "branches": [ { "branches": [ { "category": "product_version_range", "name": "vers:rpm/unknown", "product": { "name": "vers:rpm/unknown", "product_id": "CSAFPID-2858790" } } ], "category": "product_name", "name": "windows-machine-config-operator-bundle" }, { "branches": [ { "category": "product_version_range", "name": "vers:rpm/unknown", "product": { "name": "vers:rpm/unknown", "product_id": "CSAFPID-2858791" } } ], "category": "product_name", "name": "windows-machine-config-rhel9-operator" } ], "category": "product_family", "name": "Red Hat OpenShift for Windows Containers" } ], "category": "vendor", "name": "Red Hat" }, { "branches": [ { "branches": [ { "category": "product_version_range", "name": "vers:unknown/<2.16", "product": { "name": "vers:unknown/<2.16", "product_id": "CSAFPID-5874518" } } ], "category": "product_name", "name": "harden-runner" } ], "category": "vendor", "name": "step-security" }, { "branches": [ { "branches": [ { "category": "product_version_range", "name": "vers:unknown/<2.16.0", "product": { "name": "vers:unknown/<2.16.0", "product_id": "CSAFPID-5902393", "product_identification_helper": { "cpe": "cpe:2.3:a:stepsecurity:harden-runner:*:*:*:*:community:*:*:*" } } } ], "category": "product_name", "name": "harden-runner" } ], "category": "vendor", "name": "stepsecurity" } ] }, "vulnerabilities": [ { "cve": "CVE-2026-32947", "cwe": { "id": "CWE-863", "name": "Incorrect Authorization" }, "notes": [ { "category": "description", "text": "## Summary\n\nA vulnerability exists in the Community Tier of Harden-Runner that allows bypassing the `egress-policy: block` network restriction using DNS over HTTPS (DoH).\n\nHarden-Runner secures GitHub Actions workflows on runners by applying network policies, including an `allowed-endpoints` configuration that limits outbound traffic to specified domains and ports (e.g., `github.com:443`). In `egress-policy: block` mode, non-compliant connections are intercepted and denied. \n\nThis vulnerability exploits DoH, a protocol that encapsulates DNS queries within HTTPS requests. By crafting a DNS query that embeds exfiltrated data as a subdomain (e.g., encoding the runner's hostname into a label), an attacker can route the request through a permitted HTTPS endpoint like `dns.google` (`8.8.8.8`'s DoH service). The resolver processes the query and forwards it to the attacker's controlled domain, achieving exfiltration without directly accessing the blocked destination. This evades Harden-Runner's domain-based filtering, as the initial HTTPS connection appears legitimate. \n\nThis vulnerability requires the attacker to already have code execution capabilities within the GitHub Actions workflow.\n\nThe Enterprise Tier of Harden-Runner is **not affected** by this vulnerability.\n\n## Impact\n\nWhen Harden-Runner is configured with `egress-policy: block` and a restrictive `allowed-endpoints` list, an attacker with existing code execution capabilities within a GitHub Actions workflow can bypass the allowed domains check via DNS over HTTPS by proxying DNS queries through a permitted resolver (e.g., Google's DoH service). This allows data exfiltration even when `allowed-endpoints` is set to only whitelisted domains.\n\nThis vulnerability affects only the Community Tier. It requires the attacker to already have code execution capabilities within the GitHub Actions workflow.\n\n## Remediation\n\n### For Community Tier Users\n\nUpgrade to Harden-Runner v2.16.0 or later. \n\n### For Enterprise Tier Users\n\nNo action required. Enterprise tier customers are not affected by this vulnerability.\n\n## Credit \n\nWe would like to thank [Devansh Batham](https://github.com/devanshbatham) for responsibly disclosing this vulnerability through our security reporting process.", "title": "github - https://github.com/advisories/GHSA-46g3-37rh-v698" }, { "category": "description", "text": "## Summary\n\nA vulnerability exists in the Community Tier of Harden-Runner that allows bypassing the `egress-policy: block` network restriction using DNS over HTTPS (DoH).\n\nHarden-Runner secures GitHub Actions workflows on runners by applying network policies, including an `allowed-endpoints` configuration that limits outbound traffic to specified domains and ports (e.g., `github.com:443`). In `egress-policy: block` mode, non-compliant connections are intercepted and denied. \n\nThis vulnerability exploits DoH, a protocol that encapsulates DNS queries within HTTPS requests. By crafting a DNS query that embeds exfiltrated data as a subdomain (e.g., encoding the runner's hostname into a label), an attacker can route the request through a permitted HTTPS endpoint like `dns.google` (`8.8.8.8`'s DoH service). The resolver processes the query and forwards it to the attacker's controlled domain, achieving exfiltration without directly accessing the blocked destination. This evades Harden-Runner's domain-based filtering, as the initial HTTPS connection appears legitimate. \n\nThis vulnerability requires the attacker to already have code execution capabilities within the GitHub Actions workflow.\n\nThe Enterprise Tier of Harden-Runner is **not affected** by this vulnerability.\n\n## Impact\n\nWhen Harden-Runner is configured with `egress-policy: block` and a restrictive `allowed-endpoints` list, an attacker with existing code execution capabilities within a GitHub Actions workflow can bypass the allowed domains check via DNS over HTTPS by proxying DNS queries through a permitted resolver (e.g., Google's DoH service). This allows data exfiltration even when `allowed-endpoints` is set to only whitelisted domains.\n\nThis vulnerability affects only the Community Tier. It requires the attacker to already have code execution capabilities within the GitHub Actions workflow.\n\n## Remediation\n\n### For Community Tier Users\n\nUpgrade to Harden-Runner v2.16.0 or later. \n\n### For Enterprise Tier Users\n\nNo action required. Enterprise tier customers are not affected by this vulnerability.\n\n## Credit \n\nWe would like to thank [Devansh Batham](https://github.com/devanshbatham) for responsibly disclosing this vulnerability through our security reporting process.", "title": "github - https://api.github.com/advisories/GHSA-46g3-37rh-v698" }, { "category": "description", "text": "Harden-Runner is a CI/CD security agent that works like an EDR for GitHub Actions runners. In versions 2.15.1 and below, a DNS over HTTPS (DoH) vulnerability allows attackers to bypass egress-policy: block network restrictions by tunneling exfiltrated data through permitted HTTPS endpoints like dns.google. The attack works by encoding sensitive data (e.g., the runner's hostname) as subdomains in DoH queries, which appear as legitimate HTTPS traffic to Harden-Runner's domain-based filtering but are ultimately forwarded to an attacker-controlled domain. This effectively enables data exfiltration without directly connecting to any blocked destination. Exploitation requires the attacker to already have code execution within the GitHub Actions workflow. The issue was fixed in version 2.16.0.", "title": "cveprojectv5 - https://raw.githubusercontent.com/CVEProject/cvelistV5/main/cves/2026/32xxx/CVE-2026-32947.json" }, { "category": "description", "text": "Harden-Runner is a CI/CD security agent that works like an EDR for GitHub Actions runners. In versions 2.15.1 and below, a DNS over HTTPS (DoH) vulnerability allows attackers to bypass egress-policy: block network restrictions by tunneling exfiltrated data through permitted HTTPS endpoints like dns.google. The attack works by encoding sensitive data (e.g., the runner's hostname) as subdomains in DoH queries, which appear as legitimate HTTPS traffic to Harden-Runner's domain-based filtering but are ultimately forwarded to an attacker-controlled domain. This effectively enables data exfiltration without directly connecting to any blocked destination. Exploitation requires the attacker to already have code execution within the GitHub Actions workflow. The issue was fixed in version 2.16.0.", "title": "nvd - https://services.nvd.nist.gov/rest/json/cves/2.0?cveId=CVE-2026-32947" }, { "category": "description", "text": "A flaw was found in Harden-Runner. A remote attacker with existing code execution within a GitHub Actions workflow could exploit a DNS over HTTPS (DoH) vulnerability to bypass network restrictions. This allows for the exfiltration of sensitive data by encoding it within DoH queries, which appear as legitimate HTTPS traffic, effectively bypassing egress policies.", "title": "redhat - https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2026-32947.json" }, { "category": "other", "text": "0.00076", "title": "EPSS" }, { "category": "other", "text": "CVSS:4.0/AV:N/AC:L/AT:P/PR:H/UI:N/VC:N/VI:N/VA:N/SC:H/SI:N/SA:N", "title": "CVSSV4" }, { "category": "other", "text": "4.6", "title": "CVSSV4 base score" }, { "category": "other", "text": "4.0", "title": "NCSC Score" }, { "category": "other", "text": "Is related to CWE-863 (Incorrect Authorization)", "title": "NCSC Score top increasing factors" }, { "category": "other", "text": "The value of the most recent EPSS score, There is cwe data available from source Redhat", "title": "NCSC Score top decreasing factors" }, { "category": "details", "text": "Severity: 2\n", "title": "Vendor assessment" } ], "product_status": { "known_affected": [ "CSAFPID-5874518", "CSAFPID-1441056", "CSAFPID-2485098", "CSAFPID-2858789", "CSAFPID-2858790", "CSAFPID-2858791", "CSAFPID-2914692", "CSAFPID-2914693", "CSAFPID-2914728", "CSAFPID-2914731", "CSAFPID-2914732", "CSAFPID-2914733", "CSAFPID-5207390", "CSAFPID-5207391", "CSAFPID-5264795", "CSAFPID-5264796", "CSAFPID-5264797", "CSAFPID-5902393" ] }, "references": [ { "category": "external", "summary": "Source - github", "url": "https://github.com/advisories/GHSA-46g3-37rh-v698" }, { "category": "external", "summary": "Source raw - github", "url": "https://api.github.com/advisories/GHSA-46g3-37rh-v698" }, { "category": "external", "summary": "Source - github", "url": "https://api.github.com/advisories/GHSA-46g3-37rh-v698" }, { "category": "external", "summary": "Source - cveprojectv5", "url": "https://raw.githubusercontent.com/CVEProject/cvelistV5/main/cves/2026/32xxx/CVE-2026-32947.json" }, { "category": "external", "summary": "Source - nvd", "url": "https://services.nvd.nist.gov/rest/json/cves/2.0?cveId=CVE-2026-32947" }, { "category": "external", "summary": "Source - first", "url": "https://api.first.org/data/v1/epss?limit=10000&offset=0" }, { "category": "external", "summary": "Source - redhat", "url": "https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2026-32947.json" }, { "category": "external", "summary": "Reference - cveprojectv5; github; nvd; redhat", "url": "https://github.com/step-security/harden-runner/security/advisories/GHSA-46g3-37rh-v698" }, { "category": "external", "summary": "Reference - cveprojectv5; github; nvd; redhat", "url": "https://github.com/step-security/harden-runner/releases/tag/v2.16.0" }, { "category": "external", "summary": "Reference - github", "url": "https://github.com/advisories/GHSA-46g3-37rh-v698" }, { "category": "external", "summary": "Reference - redhat", "url": "https://www.cve.org/CVERecord?id=CVE-2026-32947" }, { "category": "external", "summary": "Reference - github; redhat", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-32947" } ], "scores": [ { "cvss_v3": { "version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N", "baseScore": 4.9, "baseSeverity": "MEDIUM" }, "products": [ "CSAFPID-1441056", "CSAFPID-2485098", "CSAFPID-2858789", "CSAFPID-2858790", "CSAFPID-2858791", "CSAFPID-2914692", "CSAFPID-2914693", "CSAFPID-2914728", "CSAFPID-2914731", "CSAFPID-2914732", "CSAFPID-2914733", "CSAFPID-5207390", "CSAFPID-5207391", "CSAFPID-5264795", "CSAFPID-5264796", "CSAFPID-5264797", "CSAFPID-5874518", "CSAFPID-5902393" ] } ], "title": "CVE-2026-32947" } ] }