{"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"}}}}

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{"bugzilla": {"description": "nodemailer: nodemailer: Domain allow-list bypass via improper address comment parsing", "id": "2552969", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2552969"}, "csaw": false, "cvss3": {"cvss3_base_score": "5.3", "cvss3_scoring_vector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N", "status": "draft"}, "cwe": "CWE-791", "details": ["A flaw was found in Nodemailer. A remote attacker can bypass domain allow-lists or cause email delivery failures by submitting specially crafted recipient addresses. Because the address parser fails to properly strip parenthesized comments within formatted email addresses, unvalidated characters are forwarded to mail transfer envelope commands."], "name": "CVE-2026-110870", "package_state": [{"cpe": "cpe:/a:redhat:rhdh:1", "fix_state": "Fix deferred", "package_name": "rhdh/rhdh-hub-rhel9", "product_name": "Red Hat Developer Hub"}, {"cpe": "cpe:/o:redhat:enterprise_linux:10", "fix_state": "Fix deferred", "package_name": "grafana", "product_name": "Red Hat Enterprise Linux 10"}, {"cpe": "cpe:/a:redhat:hummingbird:1", "fix_state": "Not affected", "package_name": "grafana12.4", "product_name": "Red Hat Hardened Images"}, {"cpe": "cpe:/a:redhat:hummingbird:1", "fix_state": "Not affected", "package_name": "grafana13.1", "product_name": "Red Hat Hardened Images"}, {"cpe": "cpe:/a:redhat:hummingbird:1", "fix_state": "Not affected", "package_name": "grafana13.2", "product_name": "Red Hat Hardened Images"}, {"cpe": "cpe:/a:redhat:ansible_portal:2", "fix_state": "Fix deferred", "package_name": "ansible-automation-platform/bootc-automation-portal-rhel9", "product_name": "Self-service automation portal 2"}], "public_date": "2026-10-14T22:52:58Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-110870\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-110870\nhttps://github.com/nodemailer/nodemailer/security/advisories/GHSA-g73g-hqqh-jr95\nhttps://www.vulncheck.com/advisories/nodemailer-before-10.0.13-improper-input-validation-via-angle-bracket-address-comments"], "threat_severity": "Moderate"}

{"created": "2026-10-15T12:00:18.755875+00:00", "updated": "2026-10-15T12:00:18.755880+00:00", "vendors": []}