{"url":"http://public2.vulnerablecode.io/api/vulnerabilities/350876?format=json","vulnerability_id":"VCID-fa57-smff-sbg2","summary":"A denial of service vulnerability exists in React Server Components, affecting the following packages: react-server-dom-parcel, react-server-dom-turbopack and react-server-dom-webpack (versions 19.0.0 through 19.0.4, 19.1.0 through 19.1.5, and 19.2.0 through 19.2.4). The vulnerability is triggered by sending specially crafted HTTP requests to Server Function endpoints.The payload of the HTTP request causes excessive CPU usage for up to a minute ending in a thrown error that is catchable.","aliases":[{"alias":"CVE-2026-23869"},{"alias":"GHSA-479c-33wc-g2pg"}],"fixed_packages":[{"url":"http://public2.vulnerablecode.io/api/packages/1060876?format=json","purl":"pkg:npm/react-server-dom-parcel@19.1.6","is_vulnerable":false,"affected_by_vulnerabilities":[],"resource_url":"http://public2.vulnerablecode.io/packages/pkg:npm/react-server-dom-parcel@19.1.6"},{"url":"http://public2.vulnerablecode.io/api/packages/1060877?format=json","purl":"pkg:npm/react-server-dom-parcel@19.2.5","is_vulnerable":false,"affected_by_vulnerabilities":[],"resource_url":"http://public2.vulnerablecode.io/packages/pkg:npm/react-server-dom-parcel@19.2.5"},{"url":"http://public2.vulnerablecode.io/api/packages/1060878?format=json","purl":"pkg:npm/react-server-dom-turbopack@19.0.5","is_vulnerable":false,"affected_by_vulnerabilities":[],"resource_url":"http://public2.vulnerablecode.io/packages/pkg:npm/react-server-dom-turbopack@19.0.5"},{"url":"http://public2.vulnerablecode.io/api/packages/1060879?format=json","purl":"pkg:npm/react-server-dom-turbopack@19.1.6","is_vulnerable":false,"affected_by_vulnerabilities":[],"resource_url":"http://public2.vulnerablecode.io/packages/pkg:npm/react-server-dom-turbopack@19.1.6"},{"url":"http://public2.vulnerablecode.io/api/packages/1060880?format=json","purl":"pkg:npm/react-server-dom-turbopack@19.2.5","is_vulnerable":false,"affected_by_vulnerabilities":[],"resource_url":"http://public2.vulnerablecode.io/packages/pkg:npm/react-server-dom-turbopack@19.2.5"},{"url":"http://public2.vulnerablecode.io/api/packages/1060881?format=json","purl":"pkg:npm/react-server-dom-webpack@19.0.5","is_vulnerable":false,"affected_by_vulnerabilities":[],"resource_url":"http://public2.vulnerablecode.io/packages/pkg:npm/react-server-dom-webpack@19.0.5"},{"url":"http://public2.vulnerablecode.io/api/packages/1060882?format=json","purl":"pkg:npm/react-server-dom-webpack@19.1.6","is_vulnerable":false,"affected_by_vulnerabilities":[],"resource_url":"http://public2.vulnerablecode.io/packages/pkg:npm/react-server-dom-webpack@19.1.6"},{"url":"http://public2.vulnerablecode.io/api/packages/1060883?format=json","purl":"pkg:npm/react-server-dom-webpack@19.2.5","is_vulnerable":false,"affected_by_vulnerabilities":[],"resource_url":"http://public2.vulnerablecode.io/packages/pkg:npm/react-server-dom-webpack@19.2.5"}],"affected_packages":[{"url":"http://public2.vulnerablecode.io/api/packages/66715?format=json","purl":"pkg:npm/react-server-dom-parcel@19.0.0","is_vulnerable":true,"affected_by_vulnerabilities":[{"vulnerability":"VCID-bwdv-fw3h-dfce"},{"vulnerability":"VCID-fa57-smff-sbg2"},{"vulnerability":"VCID-hznz-envu-kfcq"},{"vulnerability":"VCID-pqwe-3ukm-dkh4"},{"vulnerability":"VCID-q3r3-ykj4-3qbr"}],"resource_url":"http://public2.vulnerablecode.io/packages/pkg:npm/react-server-dom-parcel@19.0.0"},{"url":"http://public2.vulnerablecode.io/api/packages/66717?format=json","purl":"pkg:npm/react-server-dom-parcel@19.1.0","is_vulnerable":true,"affected_by_vulnerabilities":[{"vulnerability":"VCID-bwdv-fw3h-dfce"},{"vulnerability":"VCID-fa57-smff-sbg2"},{"vulnerability":"VCID-hznz-envu-kfcq"},{"vulnerability":"VCID-pqwe-3ukm-dkh4"},{"vulnerability":"VCID-q3r3-ykj4-3qbr"}],"resource_url":"http://public2.vulnerablecode.io/packages/pkg:npm/react-server-dom-parcel@19.1.0"},{"url":"http://public2.vulnerablecode.io/api/packages/66718?format=json","purl":"pkg:npm/react-server-dom-parcel@19.2.0","is_vulnerable":true,"affected_by_vulnerabilities":[{"vulnerability":"VCID-bwdv-fw3h-dfce"},{"vulnerability":"VCID-fa57-smff-sbg2"},{"vulnerability":"VCID-hznz-envu-kfcq"},{"vulnerability":"VCID-pqwe-3ukm-dkh4"},{"vulnerability":"VCID-q3r3-ykj4-3qbr"}],"resource_url":"http://public2.vulnerablecode.io/packages/pkg:npm/react-server-dom-parcel@19.2.0"},{"url":"http://public2.vulnerablecode.io/api/packages/66681?format=json","purl":"pkg:npm/react-server-dom-turbopack@19.0.0","is_vulnerable":true,"affected_by_vulnerabilities":[{"vulnerability":"VCID-bwdv-fw3h-dfce"},{"vulnerability":"VCID-fa57-smff-sbg2"},{"vulnerability":"VCID-hznz-envu-kfcq"},{"vulnerability":"VCID-pqwe-3ukm-dkh4"},{"vulnerability":"VCID-q3r3-ykj4-3qbr"}],"resource_url":"http://public2.vulnerablecode.io/packages/pkg:npm/react-server-dom-turbopack@19.0.0"},{"url":"http://public2.vulnerablecode.io/api/packages/66682?format=json","purl":"pkg:npm/react-server-dom-turbopack@19.1.0","is_vulnerable":true,"affected_by_vulnerabilities":[{"vulnerability":"VCID-bwdv-fw3h-dfce"},{"vulnerability":"VCID-fa57-smff-sbg2"},{"vulnerability":"VCID-hznz-envu-kfcq"},{"vulnerability":"VCID-pqwe-3ukm-dkh4"},{"vulnerability":"VCID-q3r3-ykj4-3qbr"}],"resource_url":"http://public2.vulnerablecode.io/packages/pkg:npm/react-server-dom-turbopack@19.1.0"},{"url":"http://public2.vulnerablecode.io/api/packages/66683?format=json","purl":"pkg:npm/react-server-dom-turbopack@19.2.0","is_vulnerable":true,"affected_by_vulnerabilities":[{"vulnerability":"VCID-bwdv-fw3h-dfce"},{"vulnerability":"VCID-fa57-smff-sbg2"},{"vulnerability":"VCID-hznz-envu-kfcq"},{"vulnerability":"VCID-pqwe-3ukm-dkh4"},{"vulnerability":"VCID-q3r3-ykj4-3qbr"}],"resource_url":"http://public2.vulnerablecode.io/packages/pkg:npm/react-server-dom-turbopack@19.2.0"},{"url":"http://public2.vulnerablecode.io/api/packages/66723?format=json","purl":"pkg:npm/react-server-dom-webpack@19.0.0","is_vulnerable":true,"affected_by_vulnerabilities":[{"vulnerability":"VCID-bwdv-fw3h-dfce"},{"vulnerability":"VCID-fa57-smff-sbg2"},{"vulnerability":"VCID-hznz-envu-kfcq"},{"vulnerability":"VCID-pqwe-3ukm-dkh4"},{"vulnerability":"VCID-q3r3-ykj4-3qbr"}],"resource_url":"http://public2.vulnerablecode.io/packages/pkg:npm/react-server-dom-webpack@19.0.0"},{"url":"http://public2.vulnerablecode.io/api/packages/66724?format=json","purl":"pkg:npm/react-server-dom-webpack@19.1.0","is_vulnerable":true,"affected_by_vulnerabilities":[{"vulnerability":"VCID-bwdv-fw3h-dfce"},{"vulnerability":"VCID-fa57-smff-sbg2"},{"vulnerability":"VCID-hznz-envu-kfcq"},{"vulnerability":"VCID-pqwe-3ukm-dkh4"},{"vulnerability":"VCID-q3r3-ykj4-3qbr"}],"resource_url":"http://public2.vulnerablecode.io/packages/pkg:npm/react-server-dom-webpack@19.1.0"},{"url":"http://public2.vulnerablecode.io/api/packages/66725?format=json","purl":"pkg:npm/react-server-dom-webpack@19.2.0","is_vulnerable":true,"affected_by_vulnerabilities":[{"vulnerability":"VCID-bwdv-fw3h-dfce"},{"vulnerability":"VCID-fa57-smff-sbg2"},{"vulnerability":"VCID-hznz-envu-kfcq"},{"vulnerability":"VCID-pqwe-3ukm-dkh4"},{"vulnerability":"VCID-q3r3-ykj4-3qbr"}],"resource_url":"http://public2.vulnerablecode.io/packages/pkg:npm/react-server-dom-webpack@19.2.0"}],"references":[{"reference_url":"https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2026-23869.json","reference_id":"","reference_type":"","scores":[{"value":"7.5","scoring_system":"cvssv3","scoring_elements":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"}],"url":"https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2026-23869.json"},{"reference_url":"https://api.first.org/data/v1/epss?cve=CVE-2026-23869","reference_id":"","reference_type":"","scores":[{"value":"0.00322","scoring_system":"epss","scoring_elements":"0.55259","published_at":"2026-04-11T12:55:00Z"},{"value":"0.00322","scoring_system":"epss","scoring_elements":"0.5522","published_at":"2026-04-13T12:55:00Z"},{"value":"0.00322","scoring_system":"epss","scoring_elements":"0.55238","published_at":"2026-04-12T12:55:00Z"},{"value":"0.00322","scoring_system":"epss","scoring_elements":"0.55247","published_at":"2026-04-09T12:55:00Z"},{"value":"0.00688","scoring_system":"epss","scoring_elements":"0.71777","published_at":"2026-04-18T12:55:00Z"},{"value":"0.00688","scoring_system":"epss","scoring_elements":"0.71772","published_at":"2026-04-16T12:55:00Z"},{"value":"0.00688","scoring_system":"epss","scoring_elements":"0.7176","published_at":"2026-04-21T12:55:00Z"},{"value":"0.00728","scoring_system":"epss","scoring_elements":"0.72702","published_at":"2026-05-05T12:55:00Z"},{"value":"0.00728","scoring_system":"epss","scoring_elements":"0.72704","published_at":"2026-04-24T12:55:00Z"},{"value":"0.00728","scoring_system":"epss","scoring_elements":"0.72713","published_at":"2026-04-26T12:55:00Z"},{"value":"0.00728","scoring_system":"epss","scoring_elements":"0.72709","published_at":"2026-04-29T12:55:00Z"}],"url":"https://api.first.org/data/v1/epss?cve=CVE-2026-23869"},{"reference_url":"https://github.com/facebook/react","reference_id":"","reference_type":"","scores":[{"value":"7.5","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"},{"value":"HIGH","scoring_system":"generic_textual","scoring_elements":""}],"url":"https://github.com/facebook/react"},{"reference_url":"https://nvd.nist.gov/vuln/detail/CVE-2026-23869","reference_id":"","reference_type":"","scores":[{"value":"7.5","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"},{"value":"HIGH","scoring_system":"generic_textual","scoring_elements":""}],"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-23869"},{"reference_url":"https://react.dev/blog/2025/12/11/denial-of-service-and-source-code-exposure-in-react-server-components","reference_id":"","reference_type":"","scores":[{"value":"7.5","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"},{"value":"HIGH","scoring_system":"generic_textual","scoring_elements":""}],"url":"https://react.dev/blog/2025/12/11/denial-of-service-and-source-code-exposure-in-react-server-components"},{"reference_url":"https://bugzilla.redhat.com/show_bug.cgi?id=2456663","reference_id":"2456663","reference_type":"","scores":[],"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2456663"},{"reference_url":"https://github.com/advisories/GHSA-479c-33wc-g2pg","reference_id":"GHSA-479c-33wc-g2pg","reference_type":"","scores":[{"value":"HIGH","scoring_system":"cvssv3.1_qr","scoring_elements":""}],"url":"https://github.com/advisories/GHSA-479c-33wc-g2pg"},{"reference_url":"https://github.com/facebook/react/security/advisories/GHSA-479c-33wc-g2pg","reference_id":"GHSA-479c-33wc-g2pg","reference_type":"","scores":[{"value":"7.5","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"},{"value":"HIGH","scoring_system":"cvssv3.1_qr","scoring_elements":""},{"value":"HIGH","scoring_system":"generic_textual","scoring_elements":""},{"value":"Track","scoring_system":"ssvc","scoring_elements":"SSVCv2/E:N/A:Y/T:P/P:M/B:A/M:M/D:T/2026-04-08T19:55:33Z/"}],"url":"https://github.com/facebook/react/security/advisories/GHSA-479c-33wc-g2pg"}],"weaknesses":[{"cwe_id":502,"name":"Deserialization of Untrusted Data","description":"The product deserializes untrusted data without sufficiently verifying that the resulting data will be valid."},{"cwe_id":400,"name":"Uncontrolled Resource Consumption","description":"The product does not properly control the allocation and maintenance of a limited resource, thereby enabling an actor to influence the amount of resources consumed, eventually leading to the exhaustion of available resources."},{"cwe_id":770,"name":"Allocation of Resources Without Limits or Throttling","description":"The product allocates a reusable resource or group of resources on behalf of an actor without imposing any restrictions on the size or number of resources that can be allocated, in violation of the intended security policy for that actor."}],"exploits":[],"severity_range_score":"7.0 - 8.9","exploitability":"0.5","weighted_severity":"8.0","risk_score":4.0,"resource_url":"http://public2.vulnerablecode.io/vulnerabilities/VCID-fa57-smff-sbg2"}