{"items":[{"id":"NVI-00013161","kind":"vulnerability","title":"Nodemailer: Improper TLS Certificate Validation in OAuth2 Token Fetch Enables Credential Interception","revision":2,"unknowns":["Customer inventory, deployment, reachability and exploitation have not been inspected.","NVD lastModified does not establish freshness of every associated CPE record."],"lifecycle":"active","identifiers":["GHSA-r7g4-qg5f-qqm2","CVE-2026-82662"],"plain_summary":"GitHub lists this reviewed advisory for nodemailer. Published version ranges and source prerequisites are shown below; this is not an inspection of a visitor’s application.","review_status":"source_listed","control_topics":[],"public_actions":[{"summary":"Identify the exact component and deployed version, examine the linked publisher’s conditions, and retain evidence of any mitigation.","source_ids":["sr-0cf91e8f40d71afdc3c11f7529357a51"],"action_type":"investigate","limitations":"Confirm current vendor support, compatibility and deployment evidence. This report has not tested a fix in your system.","current_supported_target":null}],"schema_version":"1.1.0","source_metrics":[{"kind":"CVSS","as_of":"2026-10-05T22:51:58.000Z","value":"6.5 high","meaning":"GitHub source severity; exploitability and local consequence require separate evidence.","source_id":"sr-7ce5c02e0bf50de8a4036e6afaa4fae1"},{"kind":"CVSS","as_of":"2026-09-10T15:48:28.757Z","value":"6.5 MEDIUM (3.1)","meaning":"disclosure@vulncheck.com severity; no combined Null risk score.","source_id":"sr-0cf91e8f40d71afdc3c11f7529357a51"},{"kind":"CVSS","as_of":"2026-09-10T15:48:28.757Z","value":"8.3 HIGH (4.0)","meaning":"disclosure@vulncheck.com severity; no combined Null risk score.","source_id":"sr-0cf91e8f40d71afdc3c11f7529357a51"}],"why_it_matters":"Published affected context helps an owner decide what evidence to gather. This report has not examined your application.","related_sources":[{"id":"sr-7ce5c02e0bf50de8a4036e6afaa4fae1","url":"https://github.com/advisories/GHSA-r7g4-qg5f-qqm2","basis":"vendor_advisory","notes":"GitHub Advisory Database; CC-BY-4.0. Each advisory links its original attribution. Null normalizes fields.","title":"GHSA-r7g4-qg5f-qqm2","publisher":"GitHub Advisory Database","observed_at":"2026-11-01T01:39:10.636Z"},{"id":"sr-0cf91e8f40d71afdc3c11f7529357a51","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-82662","basis":"official_catalog","notes":"This product uses data from the NVD API but is not endorsed or certified by the NVD.","title":"CVE-2026-82662","publisher":"NIST National Vulnerability Database","observed_at":"2026-11-04T09:59:13.348Z"}],"affected_context":[{"certainty":"source_listed","source_ids":["sr-7ce5c02e0bf50de8a4036e6afaa4fae1"],"technology":"nodemailer","known_exclusions":[],"conditions_summary":"### Summary\nNodemailer disables TLS certificate verification in its internal HTTPS fetch client through the use of rejectUnauthorized: false inside lib/fetch/index.js.\n\nAs a result, OAuth2 token requests trust invalid or self-signed HTTPS certificates and transmit sensitive OAuth credentials over connections that should fail TLS validation.\n\nAn attacker in a machine-in-the-middle position can intercept OAuth2 credential exchanges and capture:\n\n- OAuth client_secret\n- refresh_token\n- access tokens\n\nThe issue was verified through runtime testing using a self-signed HTTPS OAuth endpoint.\n\n### Details\nRoot Cause\n\nThe issue originates from the internal HTTPS fetch implementation used by Nodemailer for OAuth2 token retrieval and related outbound HTTPS requests.\n\nInside:\n\n`lib/fetch/index.js`\n\nthe request options contain:\n\n`rejectUnauthorized: false`\n\nThis disables TLS peer certificate verification globally for the internal HTTPS client unless explicitly overridden through optional TLS configuration.\n\nAs a result:\n\n- self-signed certificates are trusted\n- invalid CA chains are accepted\n- hostname validation is bypassed\n- attacker-controlled HTTPS endpoints are treated as trusted\n\nThis vio","public_affected_ranges":["<= 8.0.7"]}],"null_published_at":"2026-11-04T10:04:35.902Z","source_updated_at":"2026-10-05T22:51:58.000Z","source_disclosed_at":"2026-06-15T17:34:48.000Z","is_synthetic_fixture":false,"null_last_reviewed_at":null,"public_change_summary":"Source facts changed; compare the preserved prior revision.","null_first_observed_at":"2026-11-01T01:39:10.636Z"},{"id":"NVI-00013161","kind":"vulnerability","title":"Nodemailer: Improper TLS Certificate Validation in OAuth2 Token Fetch Enables Credential Interception","revision":1,"unknowns":["Customer inventory, deployment, reachability and exploitation have not been inspected."],"lifecycle":"active","identifiers":["GHSA-r7g4-qg5f-qqm2","CVE-2026-82662"],"plain_summary":"GitHub lists this reviewed advisory for nodemailer. Published version ranges and source prerequisites are shown below; this is not an inspection of a visitor’s application.","review_status":"source_listed","control_topics":[],"public_actions":[{"summary":"Identify the exact component and deployed version, examine the linked publisher’s conditions, and retain evidence of any mitigation.","source_ids":["sr-7ce5c02e0bf50de8a4036e6afaa4fae1"],"action_type":"investigate","limitations":"Confirm current vendor support, compatibility and deployment evidence. This report has not tested a fix in your system.","current_supported_target":null}],"schema_version":"1.1.0","source_metrics":[{"kind":"CVSS","as_of":"2026-10-05T22:51:58.000Z","value":"6.5 high","meaning":"GitHub source severity; exploitability and local consequence require separate evidence.","source_id":"sr-7ce5c02e0bf50de8a4036e6afaa4fae1"}],"why_it_matters":"Published affected context helps an owner decide what evidence to gather. This report has not examined your application.","related_sources":[{"id":"sr-7ce5c02e0bf50de8a4036e6afaa4fae1","url":"https://github.com/advisories/GHSA-r7g4-qg5f-qqm2","basis":"vendor_advisory","notes":"GitHub Advisory Database; CC-BY-4.0. Each advisory links its original attribution. Null normalizes fields.","title":"GHSA-r7g4-qg5f-qqm2","publisher":"GitHub Advisory Database","observed_at":"2026-11-01T01:39:10.636Z"}],"affected_context":[{"certainty":"source_listed","source_ids":["sr-7ce5c02e0bf50de8a4036e6afaa4fae1"],"technology":"nodemailer","known_exclusions":[],"conditions_summary":"### Summary\nNodemailer disables TLS certificate verification in its internal HTTPS fetch client through the use of rejectUnauthorized: false inside lib/fetch/index.js.\n\nAs a result, OAuth2 token requests trust invalid or self-signed HTTPS certificates and transmit sensitive OAuth credentials over connections that should fail TLS validation.\n\nAn attacker in a machine-in-the-middle position can intercept OAuth2 credential exchanges and capture:\n\n- OAuth client_secret\n- refresh_token\n- access tokens\n\nThe issue was verified through runtime testing using a self-signed HTTPS OAuth endpoint.\n\n### Details\nRoot Cause\n\nThe issue originates from the internal HTTPS fetch implementation used by Nodemailer for OAuth2 token retrieval and related outbound HTTPS requests.\n\nInside:\n\n`lib/fetch/index.js`\n\nthe request options contain:\n\n`rejectUnauthorized: false`\n\nThis disables TLS peer certificate verification globally for the internal HTTPS client unless explicitly overridden through optional TLS configuration.\n\nAs a result:\n\n- self-signed certificates are trusted\n- invalid CA chains are accepted\n- hostname validation is bypassed\n- attacker-controlled HTTPS endpoints are treated as trusted\n\nThis vio","public_affected_ranges":["<= 8.0.7"]}],"null_published_at":"2026-11-01T07:29:12.927Z","source_updated_at":"2026-10-05T22:51:58.000Z","source_disclosed_at":"2026-06-15T17:34:48.000Z","is_synthetic_fixture":false,"null_last_reviewed_at":null,"public_change_summary":"First indexed by Null; source disclosure date is shown separately.","null_first_observed_at":"2026-11-01T01:39:10.636Z"}],"next_cursor":null,"snapshot_revision":"42594"}