{"schema":"threatline.record/2","record":{"id":"CVE-2026-100700","aliases":["GHSA-v53p-9fqp-m79j"],"summary":"nodemailer before 10.0.6 Denial of Service via addressparser","details":"nodemailer before 10.0.6 contains a denial of service vulnerability in the addressparser free-text fallback regex pattern that exhibits quadratic backtracking behavior. Attackers can supply crafted email header values with long whitespace-free runs to block the Node.js event loop for tens of seconds, causing service unavailability.","categories":["Libraries & packages"],"product":"nodemailer","vendor":"nodemailer","ecosystem":"npm","affected_ranges":[{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-100700","source_modified_at":"2026-09-28T15:01:54.036Z","fetched_at":"2026-10-23T18:52:38.922436Z","product":"nodemailer","vendor":"nodemailer","versions":[{"version":"0","status":"affected","versionType":"semver","lessThan":"10.0.6"},{"version":"10.0.6","status":"unaffected","versionType":"semver"}],"defaultStatus":"unaffected"},{"source":"OSV","source_url":"https://osv.dev/vulnerability/GHSA-v53p-9fqp-m79j","source_modified_at":"2026-09-30T00:00:03.838265495Z","fetched_at":"2026-10-23T18:42:43.628194Z","package":{"ecosystem":"npm","name":"nodemailer","purl":"pkg:npm/nodemailer"},"ranges":[{"events":[{"introduced":"0"},{"fixed":"10.0.6"}],"type":"SEMVER"}],"versions":[]}],"fixed_versions":[{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-100700","source_modified_at":"2026-09-28T15:01:54.036Z","fetched_at":"2026-10-23T18:52:38.922436Z","package":{"name":"nodemailer","ecosystem":null},"version":"10.0.6","basis":"first unaffected version stated in the CVE record"},{"source":"OSV","source_url":"https://osv.dev/vulnerability/GHSA-v53p-9fqp-m79j","source_modified_at":"2026-09-30T00:00:03.838265495Z","fetched_at":"2026-10-23T18:42:43.628194Z","package":{"ecosystem":"npm","name":"nodemailer","purl":"pkg:npm/nodemailer"},"version":"10.0.6"}],"cvss":8.7,"severity":"High","kev":{"listed":false},"epss":{"probability":0.00279,"percentile":0.19296,"score_date":"2026-10-23"},"published_at":"2026-09-26T13:23:56.526Z","modified_at":"2026-09-30T00:00:03.838265495Z","provenance":[{"source":"CVE List","url":"https://www.cve.org/CVERecord?id=CVE-2026-100700","fetched_at":"2026-10-23T18:52:38.922436Z","source_modified_at":"2026-09-28T15:01:54.036Z"},{"source":"OSV","url":"https://osv.dev/vulnerability/GHSA-v53p-9fqp-m79j","fetched_at":"2026-10-23T18:42:43.628194Z","source_modified_at":"2026-09-30T00:00:03.838265495Z"},{"source":"EPSS","url":"https://api.first.org/data/v1/epss?cve=CVE-2026-100700","fetched_at":"2026-10-23T18:42:43.628194Z","source_modified_at":"2026-10-23"}],"sources":["CVE List","OSV","EPSS"],"references":[{"source":"CVE List","url":"https://github.com/nodemailer/nodemailer/security/advisories/GHSA-v53p-9fqp-m79j","tags":["exploit"]},{"source":"CVE List","url":"https://www.vulncheck.com/advisories/nodemailer-before-10.0.6-denial-of-service-via-addressparser","tags":["third-party-advisory"]}],"locations":[],"motoko_assessment":{"status":"requires_architecture_review","automatic_remediation":false},"cve_state":"PUBLISHED","cvss_source":"CVE List","ssvc":{"exploitation":"poc","automatable":"yes","technical_impact":"partial","assessed_at":"2026-09-28T15:00:18.660649Z"},"classification":{"method":"product-first software-layer rules","rules_version":"2.1","matched_on":"ecosystem","confidence":"heuristic","reviewed":false},"change_timestamp":"2026-09-30T00:00:03.838265495Z","content_hash":"484c7f48661d87791742344fbd7836b034d02e03edb961f008481e5c63ef3b98"}}