{"id":"GHSA-frj6-5rhh-vwfw","summary":"Duplicate Advisory: Nodemailer: Improper TLS Certificate Validation in OAuth2 Token Fetch Enables Credential Interception","details":"## Duplicate Advisory\n\nThis advisory has been withdrawn because it is a duplicate of GHSA-r7g4-qg5f-qqm2. This link is maintained to preserve external references.\n\n## Original Description\nNodemailer before 8.0.8 disables TLS certificate verification in lib/fetch/index.js through rejectUnauthorized: false, allowing attackers to intercept OAuth2 token requests. Attackers in a machine-in-the-middle position can capture OAuth client secrets, refresh tokens, and access tokens transmitted over compromised HTTPS connections.","modified":"2026-10-05T23:00:04.253174474Z","published":"2026-08-31T09:30:29Z","withdrawn":"2026-10-05T22:51:40Z","database_specific":{"github_reviewed":true,"github_reviewed_at":"2026-10-05T22:51:40Z","nvd_published_at":"2026-08-31T09:17:04Z","cwe_ids":["CWE-295"],"severity":"HIGH"},"references":[{"type":"WEB","url":"https://github.com/nodemailer/nodemailer/security/advisories/GHSA-r7g4-qg5f-qqm2"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-82662"},{"type":"WEB","url":"https://www.vulncheck.com/advisories/nodemailer-before-8.0.8-tls-certificate-validation-bypass"}],"affected":[{"package":{"name":"nodemailer","ecosystem":"npm","purl":"pkg:npm/nodemailer"},"ranges":[{"type":"SEMVER","events":[{"introduced":"0"},{"last_affected":"8.0.7"}]}],"database_specific":{"source":"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/08/GHSA-frj6-5rhh-vwfw/GHSA-frj6-5rhh-vwfw.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:L/A:N"},{"type":"CVSS_V4","score":"CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:H/VI:L/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X"}]}