{ "dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": { "cveId": "CVE-2026-67214", "assignerOrgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10", "state": "PUBLISHED", "assignerShortName": "VulnCheck", "dateReserved": "2026-07-28T18:13:39.684Z", "datePublished": "2026-07-29T13:32:02.265Z", "dateUpdated": "2026-10-08T15:24:02.199Z" }, "containers": { "cna": { "providerMetadata": { "orgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10", "shortName": "VulnCheck", "dateUpdated": "2026-10-08T15:24:02.199Z" }, "title": "nanoid Infinite Loop via Negative Size in non-secure module", "descriptions": [ { "lang": "en", "value": "nanoid (Nano ID) before 3.3.16 and 5.1.16 contains an infinite loop in the customAlphabet and nanoid functions of its non-secure module (nanoid/non-secure). When these functions are given a negative size, the loop counter is decremented from a negative value and never reaches its termination condition, spinning indefinitely and hanging the calling thread. An application that passes an unvalidated, attacker-controlled negative size to these functions is exposed to a denial-of-service condition." } ], "datePublic": "2026-06-24T00:00:00.000Z", "problemTypes": [ { "descriptions": [ { "lang": "en", "cweId": "CWE-835", "description": "Loop with Unreachable Exit Condition ('Infinite Loop')", "type": "CWE" } ] } ], "affected": [ { "vendor": "nanoid_project", "product": "nanoid", "defaultStatus": "unaffected", "versions": [ { "version": "0", "status": "affected", "versionType": "semver", "lessThan": "5.1.16" }, { "version": "5.1.16", "status": "unaffected", "versionType": "semver" }, { "status": "affected", "version": "0", "versionType": "semver", "lessThan": "3.3.16" }, { "status": "unaffected", "version": "3.3.16", "versionType": "semver" } ], "packageURL": "pkg:npm/nanoid" } ], "cpeApplicability": [ { "nodes": [ { "operator": "OR", "cpeMatch": [ { "vulnerable": true, "criteria": "cpe:2.3:a:nanoid_project:nanoid:*:*:*:*:*:node.js:*:*", "versionEndExcluding": "5.1.16" }, { "vulnerable": true, "criteria": "cpe:2.3:a:nanoid_project:nanoid:*:*:*:*:*:node.js:*:*", "versionEndExcluding": "3.3.16" } ] } ] } ], "metrics": [ { "format": "CVSS", "scenarios": [ { "lang": "en", "value": "GENERAL" } ], "cvssV4_0": { "attackVector": "NETWORK", "attackComplexity": "LOW", "attackRequirements": "PRESENT", "privilegesRequired": "NONE", "userInteraction": "NONE", "vulnConfidentialityImpact": "NONE", "subConfidentialityImpact": "NONE", "vulnIntegrityImpact": "NONE", "subIntegrityImpact": "NONE", "vulnAvailabilityImpact": "HIGH", "subAvailabilityImpact": "NONE", "exploitMaturity": "NOT_DEFINED", "Safety": "NOT_DEFINED", "Automatable": "NOT_DEFINED", "Recovery": "NOT_DEFINED", "valueDensity": "NOT_DEFINED", "vulnerabilityResponseEffort": "NOT_DEFINED", "providerUrgency": "NOT_DEFINED", "version": "4.0", "baseSeverity": "HIGH", "baseScore": 8.2, "vectorString": "CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N" } }, { "format": "CVSS", "scenarios": [ { "lang": "en", "value": "GENERAL" } ], "cvssV3_1": { "attackVector": "NETWORK", "attackComplexity": "HIGH", "privilegesRequired": "NONE", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "availabilityImpact": "HIGH", "version": "3.1", "baseSeverity": "MEDIUM", "baseScore": 5.9, "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H" } } ], "references": [ { "url": "https://github.com/ai/nanoid/releases/tag/5.1.16", "tags": [ "release-notes" ], "name": "v5.1.16 Release Notes" }, { "name": "v3.3.16 Release Notes", "tags": [ "release-notes" ], "url": "https://github.com/ai/nanoid/releases/tag/3.3.16" }, { "url": "https://github.com/ai/nanoid/commit/6ccc67bbaba71d3d77a21d9b636f4171a268ce49", "name": "Fix Commit", "tags": [ "patch" ] }, { "url": "https://www.vulncheck.com/advisories/nanoid-before-infinite-loop-via-negative-size-in-non-secure-module", "name": "VulnCheck Advisory", "tags": [ "third-party-advisory" ] } ], "x_generator": { "engine": "vulncheck-endgame" } }, "adp": [ { "metrics": [ { "other": { "type": "ssvc", "content": { "timestamp": "2026-07-29T14:37:09.751333Z", "id": "CVE-2026-67214", "options": [ { "Exploitation": "none" }, { "Automatable": "no" }, { "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": "2026-07-29T14:37:19.382Z" } } ] } }