{"resultsPerPage":1,"startIndex":0,"totalResults":1,"format":"NVD_CVE","version":"2.0","timestamp":"2026-06-21T09:52:25.974","vulnerabilities":[{"cve":{"id":"CVE-2022-35923","sourceIdentifier":"security-advisories@github.com","published":"2022-08-02T20:15:09.947","lastModified":"2026-06-17T04:52:31.823","vulnStatus":"Modified","cveTags":[],"descriptions":[{"lang":"en","value":"v8n is a javascript validation library. Versions of v8n prior to 1.5.1 were found to have an inefficient regular expression complexity in the `lowercase()` and `uppercase()` regex which could lead to a denial of service attack. In testing of the `lowercase()` function a payload of 'a' + 'a'.repeat(i) + 'A' with 32 leading characters took 29443 ms to execute. The same issue happens with uppercase(). Users are advised to upgrade. There are no known workarounds for this issue."},{"lang":"es","value":"v8n es una biblioteca de comprobación de javascript. Las versiones de v8n anteriores a 1.5.1, presentaban una complejidad de expresión regular ineficiente en las expresiones regulares \"lowercase()\" y \"uppercase()\" que podía conllevar a un ataque de denegación de servicio. En las pruebas de la función \"lowercase()\" una carga útil de \"a\" + \"a\".repeat(i) + \"A\" con 32 caracteres iniciales tardaba 29443 ms en ejecutarse. El mismo problema ocurre con uppercase(). Es recomendado a usuarios actualizar. No se presentan mitigaciones conocidas para este problema"}],"affected":[{"source":"security-advisories@github.com","affectedData":[{"vendor":"imbrn","product":"v8n","versions":[{"version":"< 1.5.1","status":"affected"}]}]}],"metrics":{"cvssMetricV31":[{"source":"security-advisories@github.com","type":"Secondary","cvssData":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","baseScore":7.5,"baseSeverity":"HIGH","attackVector":"NETWORK","attackComplexity":"LOW","privilegesRequired":"NONE","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"NONE","integrityImpact":"NONE","availabilityImpact":"HIGH"},"exploitabilityScore":3.9,"impactScore":3.6},{"source":"nvd@nist.gov","type":"Primary","cvssData":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","baseScore":7.5,"baseSeverity":"HIGH","attackVector":"NETWORK","attackComplexity":"LOW","privilegesRequired":"NONE","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"NONE","integrityImpact":"NONE","availabilityImpact":"HIGH"},"exploitabilityScore":3.9,"impactScore":3.6}],"ssvcV203":[{"source":"134c704f-9b21-4f2e-91b3-4a467353bcc0","ssvcData":{"timestamp":"2025-04-22T15:40:02.652401Z","id":"CVE-2022-35923","options":[{"exploitation":"poc"},{"automatable":"yes"},{"technicalImpact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}]},"weaknesses":[{"source":"security-advisories@github.com","type":"Secondary","description":[{"lang":"en","value":"CWE-400"}]},{"source":"nvd@nist.gov","type":"Primary","description":[{"lang":"en","value":"CWE-1333"}]}],"configurations":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:a:v8n_project:v8n:*:*:*:*:*:node.js:*:*","versionEndExcluding":"1.5.1","matchCriteriaId":"756E657C-AD87-49ED-B83B-5BD406633992"}]}]}],"references":[{"url":"https://github.com/imbrn/v8n/commit/92393862156fad190c05ec3f6e2bc73308dcd2f9","source":"security-advisories@github.com","tags":["Patch","Third Party Advisory"]},{"url":"https://github.com/imbrn/v8n/security/advisories/GHSA-xrx9-gj26-5wx9","source":"security-advisories@github.com","tags":["Third Party Advisory"]},{"url":"https://huntr.dev/bounties/2d92f644-593b-43b4-bfd1-c8042ac60609/","source":"security-advisories@github.com","tags":["Exploit","Third Party Advisory"]},{"url":"https://github.com/imbrn/v8n/commit/92393862156fad190c05ec3f6e2bc73308dcd2f9","source":"af854a3a-2127-422b-91ae-364da2661108","tags":["Patch","Third Party Advisory"]},{"url":"https://github.com/imbrn/v8n/security/advisories/GHSA-xrx9-gj26-5wx9","source":"af854a3a-2127-422b-91ae-364da2661108","tags":["Third Party Advisory"]},{"url":"https://huntr.dev/bounties/2d92f644-593b-43b4-bfd1-c8042ac60609/","source":"af854a3a-2127-422b-91ae-364da2661108","tags":["Exploit","Third Party Advisory"]}]}}]}