CVE-2026-71430

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{"affected": [{"affectedData": [{"product": "node-re2", "vendor": "uhop", "versions": [{"status": "affected", "version": "< 1.25.1"}]}], "source": "security-advisories@github.com"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "node-re2 provides RE2 regular expression bindings for Node.js. Prior to version 1.25.1, the WrappedRE2::Replace function built its replacement result and passed it to V8 using ToLocalChecked without checking for the empty MaybeLocal that V8 returns when the resulting string or buffer exceeds V8's maximum string length. When a global replace uses an output amplifying replacement template, the result can grow quadratically with the input size, and once the result exceeds V8's maximum string length, the unchecked ToLocalChecked call causes a fatal, uncatchable process abort instead of a catchable exception. This issue is fixed in version 1.25.1."}, {"lang": "es", "value": "node-re2 proporciona enlaces de expresiones regulares RE2 para Node.js. Antes de la versi\u00f3n 1.25.1, la funci\u00f3n WrappedRE2::Replace constru\u00eda su resultado de reemplazo y lo pasaba a V8 usando ToLocalChecked sin verificar el MaybeLocal vac\u00edo que V8 devuelve cuando la cadena o b\u00fafer resultante excede la longitud m\u00e1xima de cadena de V8. Cuando un reemplazo global usa una plantilla de reemplazo que amplifica la salida, el resultado puede crecer cuadr\u00e1ticamente con el tama\u00f1o de la entrada, y una vez que el resultado excede la longitud m\u00e1xima de cadena de V8, la llamada ToLocalChecked sin verificar causa una interrupci\u00f3n fatal e inatrapable del proceso en lugar de una excepci\u00f3n atrapable. Este problema est\u00e1 corregido en la versi\u00f3n 1.25.1."}], "id": "CVE-2026-71430", "lastModified": "2026-10-24T15:10:00.190", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 6.2, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H", "version": "3.1"}, "exploitabilityScore": 2.5, "impactScore": 3.6, "source": "security-advisories@github.com", "type": "Secondary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-71430", "options": [{"exploitation": "poc"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "role": "CISA Coordinator", "timestamp": "2026-08-07T17:10:43.842050Z", "version": "2.0.3"}}]}, "published": "2026-08-06T22:18:29.963", "references": [{"source": "security-advisories@github.com", "url": "https://github.com/uhop/node-re2/security/advisories/GHSA-8hcv-x26h-mcgp"}, {"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "url": "https://github.com/uhop/node-re2/security/advisories/GHSA-8hcv-x26h-mcgp"}], "sourceIdentifier": "security-advisories@github.com", "vulnStatus": "Awaiting Analysis", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-617"}], "source": "security-advisories@github.com", "type": "Secondary"}]}

{"bugzilla": {"description": "re2: node-re2: Denial of Service due to excessive string length in replacements", "id": "2512248", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2512248"}, "csaw": false, "cvss3": {"cvss3_base_score": "7.5", "cvss3_scoring_vector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H", "status": "draft"}, "cwe": "CWE-131", "details": ["A flaw was found in node-re2, a library providing RE2 regular expression bindings for Node.js. When performing a global string replacement with a specially crafted template that amplifies the output, the resulting string can exceed the maximum length allowed by the V8 JavaScript engine. This unchecked condition causes the Node.js process to terminate unexpectedly. A remote attacker could exploit this vulnerability to trigger a denial of service."], "name": "CVE-2026-71430", "package_state": [{"cpe": "cpe:/a:redhat:enterprise_linux_ai:3", "fix_state": "Not affected", "package_name": "re2", "product_name": "Red Hat Enterprise Linux AI (RHEL AI) 3"}], "public_date": "2026-08-06T21:19:32Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-71430\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-71430\nhttps://github.com/uhop/node-re2/security/advisories/GHSA-8hcv-x26h-mcgp"], "threat_severity": "Important"}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[0,1.25.1)"}}], "enrichment": {"confidence": 100.0, "confidence_source": "matching", "scores": [{"score": 100.0, "source": "matching"}]}, "original": {"product": "node-re2", "source": "cna", "vendor": "uhop"}, "product": "node-re2", "vendor": "uhop"}], "created": "2026-08-07T00:45:04.370657+00:00", "updated": "2026-08-07T13:30:03.372081+00:00", "vendors": ["uhop", "uhop$PRODUCT$node-re2"]}