{ "dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": { "cveId": "CVE-2026-110870", "assignerOrgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10", "state": "PUBLISHED", "assignerShortName": "VulnCheck", "dateReserved": "2026-10-14T22:21:21.397Z", "datePublished": "2026-10-14T22:52:58.787Z", "dateUpdated": "2026-10-14T22:52:58.787Z" }, "containers": { "cna": { "providerMetadata": { "orgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10", "shortName": "VulnCheck", "dateUpdated": "2026-10-14T22:52:58.787Z" }, "datePublic": "2026-09-30T00:00:00.000Z", "title": "Nodemailer before 10.0.13 Improper Input Validation via Angle-Bracket Address Comments", "descriptions": [ { "lang": "en", "value": "Nodemailer from 3.0.0 before 10.0.13 contains an improper input validation vulnerability in its address parser that fails to strip RFC 5322 comments inside angle-bracket addresses. Attackers can supply recipients like a display name with a parenthesized comment in the domain, so illegal characters reach envelope.to and RCPT TO, causing rejected delivery or parser interpretation conflicts that bypass domain allow-lists." } ], "problemTypes": [ { "descriptions": [ { "lang": "en", "description": "Improper Input Validation", "cweId": "CWE-20", "type": "CWE" } ] } ], "affected": [ { "vendor": "nodemailer", "product": "nodemailer", "defaultStatus": "unaffected", "packageURL": "pkg:npm/nodemailer", "versions": [ { "version": "3.0.0", "status": "affected", "versionType": "semver", "lessThan": "10.0.13" }, { "version": "10.0.13", "status": "unaffected", "versionType": "semver" } ] } ], "cpeApplicability": [ { "nodes": [ { "operator": "OR", "negate": false, "cpeMatch": [ { "vulnerable": true, "criteria": "cpe:2.3:a:nodemailer:nodemailer:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.0.0", "versionEndExcluding": "10.0.13" } ] } ] } ], "metrics": [ { "format": "CVSS", "cvssV4_0": { "version": "4.0", "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N", "attackVector": "NETWORK", "attackComplexity": "LOW", "attackRequirements": "NONE", "privilegesRequired": "NONE", "userInteraction": "NONE", "vulnConfidentialityImpact": "NONE", "vulnIntegrityImpact": "LOW", "vulnAvailabilityImpact": "NONE", "subConfidentialityImpact": "NONE", "subIntegrityImpact": "NONE", "subAvailabilityImpact": "NONE", "baseScore": 6.9, "baseSeverity": "MEDIUM" } }, { "format": "CVSS", "cvssV3_1": { "version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N", "attackVector": "NETWORK", "attackComplexity": "LOW", "privilegesRequired": "NONE", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "NONE", "integrityImpact": "LOW", "availabilityImpact": "NONE", "baseScore": 5.3, "baseSeverity": "MEDIUM" } } ], "references": [ { "url": "https://github.com/nodemailer/nodemailer/security/advisories/GHSA-g73g-hqqh-jr95", "tags": [ "vendor-advisory" ], "name": "GitHub Security Advisory (GHSA-g73g-hqqh-jr95)" }, { "name": "VulnCheck Advisory: Nodemailer before 10.0.13 Improper Input Validation via Angle-Bracket Address Comments", "tags": [ "third-party-advisory" ], "url": "https://www.vulncheck.com/advisories/nodemailer-before-10.0.13-improper-input-validation-via-angle-bracket-address-comments" } ], "credits": [ { "lang": "en", "value": "StarPlatinu", "type": "reporter" } ], "x_generator": { "engine": "vulncheck-endgame" } } } }