Nodemailer 9.1.0 through 10.0.4 Denial of Service via Quadratic Address Parsing

These records connect through source-stated identifiers. Shared identifiers or dates alone do not establish shared exposure, root cause or applicability.

CVE-2026-90776 · Microsoft / collected KEV context

EUVD-2026-77000

GHSA-vm5r-23w9-m8hx

GHSA-prgh-xp8r-p3m5

cve-program · CVE-2026-90776

• https://github.com/nodemailer/nodemailer/security/advisories/GHSA-prgh-xp8r-p3m5
• https://github.com/nodemailer/nodemailer/commit/c07f17518d25aca8ab2ad66968dcbca538c24b89
• https://github.com/nodemailer/nodemailer/blob/v10.0.4/src/addressparser/index.ts#L251
• https://github.com/nodemailer/nodemailer/releases/tag/v10.0.5
• https://github.com/nodemailer/nodemailer
• https://www.vulncheck.com/advisories/nodemailer-9.1.0-through-10.0.4-denial-of-service-via-quadratic-address-parsing

euvd · EUVD-2026-77000

• https://github.com/nodemailer/nodemailer/security/advisories/GHSA-prgh-xp8r-p3m5
• https://github.com/nodemailer/nodemailer/commit/c07f17518d25aca8ab2ad66968dcbca538c24b89
• https://github.com/nodemailer/nodemailer/blob/v10.0.4/src/addressparser/index.ts#L251
• https://github.com/nodemailer/nodemailer/releases/tag/v10.0.5
• https://github.com/nodemailer/nodemailer
• https://www.vulncheck.com/advisories/nodemailer-9.1.0-through-10.0.4-denial-of-service-via-quadratic-address-parsing

nvd · CVE-2026-90776

• https://github.com/nodemailer/nodemailer
• https://github.com/nodemailer/nodemailer/blob/v10.0.4/src/addressparser/index.ts#L251
• https://github.com/nodemailer/nodemailer/commit/c07f17518d25aca8ab2ad66968dcbca538c24b89
• https://github.com/nodemailer/nodemailer/releases/tag/v10.0.5
• https://github.com/nodemailer/nodemailer/security/advisories/GHSA-prgh-xp8r-p3m5
• https://www.vulncheck.com/advisories/nodemailer-9.1.0-through-10.0.4-denial-of-service-via-quadratic-address-parsing

osv · GHSA-prgh-xp8r-p3m5

• https://github.com/nodemailer/nodemailer/security/advisories/GHSA-prgh-xp8r-p3m5
• https://nvd.nist.gov/vuln/detail/CVE-2026-90776
• https://github.com/nodemailer/nodemailer/commit/c07f17518d25aca8ab2ad66968dcbca538c24b89
• https://github.com/nodemailer/nodemailer
• https://github.com/nodemailer/nodemailer/releases/tag/v10.0.5
• https://www.vulncheck.com/advisories/nodemailer-9.1.0-through-10.0.4-denial-of-service-via-quadratic-address-parsing

osv · GHSA-vm5r-23w9-m8hx

• https://github.com/nodemailer/nodemailer/security/advisories/GHSA-prgh-xp8r-p3m5
• https://nvd.nist.gov/vuln/detail/CVE-2026-90776
• https://github.com/nodemailer/nodemailer/commit/c07f17518d25aca8ab2ad66968dcbca538c24b89
• https://github.com/nodemailer/nodemailer
• https://github.com/nodemailer/nodemailer/blob/v10.0.4/src/addressparser/index.ts#L251
• https://github.com/nodemailer/nodemailer/releases/tag/v10.0.5
• https://www.vulncheck.com/advisories/nodemailer-9.1.0-through-10.0.4-denial-of-service-via-quadratic-address-parsing

• Nodemailer versions 9.1.0 through 10.0.4 contain a quadratic time complexity vulnerability in the addressparser component when parsing email addresses with RFC 5322 comments. Attackers can craft malicious email headers with comment-separate… · Advisory content revised · 11 Nov 2026