{"id":"CVE-2026-67550","sourceIdentifier":"security-advisories@github.com","published":"2026-07-30T20:18:15.030","lastModified":"2026-10-23T22:10:00.160","vulnStatus":"Awaiting Analysis","cveTags":[],"descriptions":[{"lang":"en","value":"re2 provides Node.js bindings for Google's RE2 regular expression engine. Prior to 1.25.2, re2 validates lastIndex against the UTF-8 byte length of a subject but uses it as a UTF-16 code-unit offset in exec, test, match, replace, and split, allowing an attacker-influenced lastIndex on a non-ASCII subject to trigger an out-of-bounds heap read and an uncatchable process crash, with limited heap information disclosure in some cases. This issue is fixed in 1.25.2."},{"lang":"es","value":"re2 proporciona enlaces de Node.js para el motor de expresiones regulares RE2 de Google. Antes de la versión 1.25.2, re2 valida ’lastIndex’ contra la longitud en bytes UTF-8 de un sujeto, pero lo utiliza como un desplazamiento de unidad de código UTF-16 en ’exec’, ’test’, ’match’, ’replace’ y ’split’, permitiendo que un ’lastIndex’ influenciado por un atacante en un sujeto no ASCII desencadene una lectura de pila fuera de límites y un fallo de proceso irrecuperable, con revelación de información limitada de la pila en algunos casos. Este problema se ha solucionado en la versión 1.25.2."}],"affected":[{"source":"security-advisories@github.com","affectedData":[{"vendor":"uhop","product":"node-re2","versions":[{"version":"< 1.25.2","status":"affected"}]}]}],"metrics":{"cvssMetricV31":[{"source":"security-advisories@github.com","type":"Secondary","cvssData":{"version":"3.1","vectorString":"CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:H","baseScore":5.7,"baseSeverity":"MEDIUM","attackVector":"LOCAL","attackComplexity":"HIGH","privilegesRequired":"NONE","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"LOW","integrityImpact":"NONE","availabilityImpact":"HIGH"},"exploitabilityScore":1.4,"impactScore":4.2}],"ssvcV203":[{"source":"134c704f-9b21-4f2e-91b3-4a467353bcc0","ssvcData":{"timestamp":"2026-07-31T23:06:52.923503Z","id":"CVE-2026-67550","options":[{"exploitation":"poc"},{"automatable":"no"},{"technicalImpact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}]},"weaknesses":[{"source":"security-advisories@github.com","type":"Secondary","description":[{"lang":"en","value":"CWE-125"}]}],"references":[{"url":"https://github.com/uhop/node-re2/commit/56293de4fc0914d7bc35f92e98de25b0d9bb417d","source":"security-advisories@github.com"},{"url":"https://github.com/uhop/node-re2/releases/tag/1.25.2","source":"security-advisories@github.com"},{"url":"https://github.com/uhop/node-re2/security/advisories/GHSA-ff84-5f28-78qj","source":"security-advisories@github.com"},{"url":"https://github.com/uhop/node-re2/security/advisories/GHSA-ff84-5f28-78qj","source":"134c704f-9b21-4f2e-91b3-4a467353bcc0"}]}