CVE-2026-71430

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.

CVSS v3 6.2 MEDIUM

6.2^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 2.5 / Impact : 3.6

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://github.com/uhop/node-re2/security/advisories/GHSA-8hcv-x26h-mcgp
https://github.com/uhop/node-re2/security/advisories/GHSA-8hcv-x26h-mcgp

Configurations

No configuration.

History

23 Oct 2026, 21:10

Type	Values Removed	Values Added
Summary		(es) node-re2 proporciona enlaces de expresiones regulares RE2 para Node.js. Antes de la versión 1.25.1, la función WrappedRE2::Replace construía su resultado de reemplazo y lo pasaba a V8 usando ToLocalChecked sin verificar el MaybeLocal vacío que V8 devuelve cuando la cadena o búfer resultante excede la longitud máxima de cadena de V8. Cuando un reemplazo global usa una plantilla de reemplazo que amplifica la salida, el resultado puede crecer cuadráticamente con el tamaño de la entrada, y una vez que el resultado excede la longitud máxima de cadena de V8, la llamada ToLocalChecked sin verificar causa una interrupción fatal e inatrapable del proceso en lugar de una excepción atrapable. Este problema está corregido en la versión 1.25.1.

Information

Published : 2026-08-06 22:18

Updated : 2026-10-24 15:10

NVD link : CVE-2026-71430

Mitre link : CVE-2026-71430

CVE.ORG link : CVE-2026-71430

JSON object : View

Products Affected

No product.

CWE

CWE-617

Reachable Assertion

{"id": "CVE-2026-71430", "cveTags": [], "metrics": {"ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-71430", "role": "CISA Coordinator", "options": [{"exploitation": "poc"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "version": "2.0.3", "timestamp": "2026-08-07T17:10:43.842050Z"}}], "cvssMetricV31": [{"type": "Secondary", "source": "security-advisories@github.com", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 6.2, "attackVector": "LOCAL", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:L/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"}, "impactScore": 3.6, "exploitabilityScore": 2.5}]}, "affected": [{"source": "security-advisories@github.com", "affectedData": [{"vendor": "uhop", "product": "node-re2", "versions": [{"status": "affected", "version": "< 1.25.1"}]}]}], "published": "2026-08-06T22:18:29.963", "references": [{"url": "https://github.com/uhop/node-re2/security/advisories/GHSA-8hcv-x26h-mcgp", "source": "security-advisories@github.com"}, {"url": "https://github.com/uhop/node-re2/security/advisories/GHSA-8hcv-x26h-mcgp", "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0"}], "vulnStatus": "Awaiting Analysis", "weaknesses": [{"type": "Secondary", "source": "security-advisories@github.com", "description": [{"lang": "en", "value": "CWE-617"}]}], "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."}], "lastModified": "2026-10-24T15:10:00.190", "sourceIdentifier": "security-advisories@github.com"}