{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-23864", "assignerOrgId": "4fc57720-52fe-4431-a0fb-3d2c8747b827", "state": "PUBLISHED", "assignerShortName": "Meta", "dateReserved": "2026-01-16T19:49:26.309Z", "datePublished": "2026-01-26T19:16:38.250Z", "dateUpdated": "2026-01-26T20:26:45.709Z"}, "containers": {"cna": {"affected": [{"defaultStatus": "unaffected", "product": "react-server-dom-webpack", "vendor": "Meta", "versions": [{"lessThan": "19.0.4", "status": "affected", "version": "19.0.0", "versionType": "semver"}, {"lessThan": "19.1.5", "status": "affected", "version": "19.1.0", "versionType": "semver"}, {"lessThan": "19.2.4", "status": "affected", "version": "19.2.0", "versionType": "semver"}]}, {"defaultStatus": "unaffected", "product": "react-server-dom-turbopack", "vendor": "Meta", "versions": [{"lessThan": "19.0.4", "status": "affected", "version": "19.0.0", "versionType": "semver"}, {"lessThan": "19.1.5", "status": "affected", "version": "19.1.0", "versionType": "semver"}, {"lessThan": "19.2.4", "status": "affected", "version": "19.2.0", "versionType": "semver"}]}, {"defaultStatus": "unaffected", "product": "react-server-dom-parcel", "vendor": "Meta", "versions": [{"lessThan": "19.0.4", "status": "affected", "version": "19.0.0", "versionType": "semver"}, {"lessThan": "19.1.5", "status": "affected", "version": "19.1.0", "versionType": "semver"}, {"lessThan": "19.2.4", "status": "affected", "version": "19.2.0", "versionType": "semver"}]}], "descriptions": [{"lang": "en", "value": "Multiple denial of service vulnerabilities exist in React Server Components, affecting the following packages: react-server-dom-parcel, react-server-dom-turbopack, react-server-dom-webpack.\n\nThe vulnerabilities are triggered by sending specially crafted HTTP requests to Server Function endpoints, and could lead to server crashes, out-of-memory exceptions or excessive CPU usage; depending on the vulnerable code path being exercised, the application configuration and application code.\n\nStrongly consider upgrading to the latest package versions to reduce risk and prevent availability issues in applications using React Server Components."}], "problemTypes": [{"descriptions": [{"description": "(CWE-502): Deserialization of Untrusted Data. (CWE-400): Uncontrolled Resource Consumption", "lang": "en"}]}], "providerMetadata": {"orgId": "4fc57720-52fe-4431-a0fb-3d2c8747b827", "shortName": "Meta", "dateUpdated": "2026-01-26T19:16:38.250Z"}, "references": [{"tags": ["x_refsource_CONFIRM"], "url": "https://www.facebook.com/security/advisories/cve-2026-23864"}]}, "adp": [{"problemTypes": [{"descriptions": [{"type": "CWE", "cweId": "CWE-502", "lang": "en", "description": "CWE-502 Deserialization of Untrusted Data"}]}, {"descriptions": [{"type": "CWE", "cweId": "CWE-400", "lang": "en", "description": "CWE-400 Uncontrolled Resource Consumption"}]}], "metrics": [{"cvssV3_1": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 7.5, "attackVector": "NETWORK", "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H", "integrityImpact": "NONE", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "NONE", "confidentialityImpact": "NONE"}}, {"other": {"type": "ssvc", "content": {"timestamp": "2026-01-26T20:26:03.428817Z", "id": "CVE-2026-23864", "options": [{"Exploitation": "none"}, {"Automatable": "yes"}, {"Technical Impact": "partial"}], "role": "CISA Coordinator", "version": "2.0.3"}}}], "title": "CISA ADP Vulnrichment", "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-01-26T20:26:45.709Z"}}]}}

{"dataType": "CVE_RECORD", "containers": {"adp": [{"title": "CISA ADP Vulnrichment", "metrics": [{"cvssV3_1": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 7.5, "attackVector": "NETWORK", "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H", "integrityImpact": "NONE", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "NONE", "confidentialityImpact": "NONE"}}, {"other": {"type": "ssvc", "content": {"id": "CVE-2026-23864", "role": "CISA Coordinator", "options": [{"Exploitation": "none"}, {"Automatable": "yes"}, {"Technical Impact": "partial"}], "version": "2.0.3", "timestamp": "2026-01-26T20:26:03.428817Z"}}}], "problemTypes": [{"descriptions": [{"lang": "en", "type": "CWE", "cweId": "CWE-502", "description": "CWE-502 Deserialization of Untrusted Data"}]}, {"descriptions": [{"lang": "en", "type": "CWE", "cweId": "CWE-400", "description": "CWE-400 Uncontrolled Resource Consumption"}]}], "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-01-26T20:25:06.606Z"}}], "cna": {"affected": [{"vendor": "Meta", "product": "react-server-dom-webpack", "versions": [{"status": "affected", "version": "19.0.0", "lessThan": "19.0.4", "versionType": "semver"}, {"status": "affected", "version": "19.1.0", "lessThan": "19.1.5", "versionType": "semver"}, {"status": "affected", "version": "19.2.0", "lessThan": "19.2.4", "versionType": "semver"}], "defaultStatus": "unaffected"}, {"vendor": "Meta", "product": "react-server-dom-turbopack", "versions": [{"status": "affected", "version": "19.0.0", "lessThan": "19.0.4", "versionType": "semver"}, {"status": "affected", "version": "19.1.0", "lessThan": "19.1.5", "versionType": "semver"}, {"status": "affected", "version": "19.2.0", "lessThan": "19.2.4", "versionType": "semver"}], "defaultStatus": "unaffected"}, {"vendor": "Meta", "product": "react-server-dom-parcel", "versions": [{"status": "affected", "version": "19.0.0", "lessThan": "19.0.4", "versionType": "semver"}, {"status": "affected", "version": "19.1.0", "lessThan": "19.1.5", "versionType": "semver"}, {"status": "affected", "version": "19.2.0", "lessThan": "19.2.4", "versionType": "semver"}], "defaultStatus": "unaffected"}], "references": [{"url": "https://www.facebook.com/security/advisories/cve-2026-23864", "tags": ["x_refsource_CONFIRM"]}], "descriptions": [{"lang": "en", "value": "Multiple denial of service vulnerabilities exist in React Server Components, affecting the following packages: react-server-dom-parcel, react-server-dom-turbopack, react-server-dom-webpack.\n\nThe vulnerabilities are triggered by sending specially crafted HTTP requests to Server Function endpoints, and could lead to server crashes, out-of-memory exceptions or excessive CPU usage; depending on the vulnerable code path being exercised, the application configuration and application code.\n\nStrongly consider upgrading to the latest package versions to reduce risk and prevent availability issues in applications using React Server Components."}], "problemTypes": [{"descriptions": [{"lang": "en", "description": "(CWE-502): Deserialization of Untrusted Data. (CWE-400): Uncontrolled Resource Consumption"}]}], "providerMetadata": {"orgId": "4fc57720-52fe-4431-a0fb-3d2c8747b827", "shortName": "Meta", "dateUpdated": "2026-01-26T19:16:38.250Z"}}}, "cveMetadata": {"cveId": "CVE-2026-23864", "state": "PUBLISHED", "dateUpdated": "2026-01-26T20:26:45.709Z", "dateReserved": "2026-01-16T19:49:26.309Z", "assignerOrgId": "4fc57720-52fe-4431-a0fb-3d2c8747b827", "datePublished": "2026-01-26T19:16:38.250Z", "assignerShortName": "Meta"}, "dataVersion": "5.2"}

{"cveTags": [], "descriptions": [{"lang": "en", "value": "Multiple denial of service vulnerabilities exist in React Server Components, affecting the following packages: react-server-dom-parcel, react-server-dom-turbopack, react-server-dom-webpack.\n\nThe vulnerabilities are triggered by sending specially crafted HTTP requests to Server Function endpoints, and could lead to server crashes, out-of-memory exceptions or excessive CPU usage; depending on the vulnerable code path being exercised, the application configuration and application code.\n\nStrongly consider upgrading to the latest package versions to reduce risk and prevent availability issues in applications using React Server Components."}], "id": "CVE-2026-23864", "lastModified": "2026-01-27T14:59:34.073", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 7.5, "baseSeverity": "HIGH", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H", "version": "3.1"}, "exploitabilityScore": 3.9, "impactScore": 3.6, "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary"}]}, "published": "2026-01-26T20:16:16.773", "references": [{"source": "cve-assign@fb.com", "url": "https://www.facebook.com/security/advisories/cve-2026-23864"}], "sourceIdentifier": "cve-assign@fb.com", "vulnStatus": "Awaiting Analysis", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-400"}, {"lang": "en", "value": "CWE-502"}], "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary"}]}

{}

{"created": "2026-01-27T09:03:35.608602+00:00", "updated": "2026-01-27T09:03:35.608629+00:00", "vendors": ["facebook", "facebook$PRODUCT$react-server-dom-parcel", "facebook$PRODUCT$react-server-dom-turbopack", "facebook$PRODUCT$react-server-dom-webpack"]}