{"schema":"threatline.record/2","record":{"id":"CVE-2026-111367","aliases":[],"summary":"BillionMail through 4.9 Forgeable JWTs via Default Signing Key","details":"BillionMail through 4.9 contains a hard-coded cryptographic key vulnerability that allows unauthenticated attackers to forge unsubscribe and subscribe-confirm JWTs by computing the key from shipped configuration constants. Attackers can submit forged tokens to /api/unsubscribe, /api/unsubscribe_new, or /api/subscribe/confirm to deactivate any contact or force confirmed subscriptions.","categories":["Unclassified"],"product":"BillionMail","vendor":"aaPanel","ecosystem":null,"affected_ranges":[{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-111367","source_modified_at":"2026-10-21T01:53:10.056Z","fetched_at":"2026-10-23T18:45:31.882637Z","product":"BillionMail","vendor":"aaPanel","versions":[{"version":"0","lessThanOrEqual":"4.9","status":"affected","versionType":"custom"}],"defaultStatus":"unaffected"}],"fixed_versions":[],"cvss":6.9,"severity":"Medium","kev":{"listed":false},"epss":{"probability":0.00262,"percentile":0.17055,"score_date":"2026-10-23"},"published_at":"2026-10-15T21:43:50.886Z","modified_at":"2026-10-21T01:53:10.056Z","provenance":[{"source":"CVE List","url":"https://www.cve.org/CVERecord?id=CVE-2026-111367","fetched_at":"2026-10-23T18:45:31.882637Z","source_modified_at":"2026-10-21T01:53:10.056Z"},{"source":"EPSS","url":"https://api.first.org/data/v1/epss?cve=CVE-2026-111367","fetched_at":"2026-10-23T18:42:43.628194Z","source_modified_at":"2026-10-23"}],"sources":["CVE List","EPSS"],"references":[{"source":"CVE List","url":"https://hackmd.io/@hieuPenguinnn/billionmail-unsubscribe-subscribe-jwt-deterministic-secret-forgery","tags":["exploit"]},{"source":"CVE List","url":"https://github.com/aaPanel/BillionMail/blob/v4.9/core/internal/service/batch_mail/jwt.go#L98-L123","tags":["technical-description"]},{"source":"CVE List","url":"https://github.com/aaPanel/BillionMail/blob/v4.9/core/manifest/config/config.yaml","tags":["technical-description"]},{"source":"CVE List","url":"https://github.com/aaPanel/BillionMail","tags":["product"]},{"source":"CVE List","url":"https://www.vulncheck.com/advisories/billionmail-through-4.9-forgeable-jwts-via-default-signing-key","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":"2026-10-21T01:52:47.127044Z"},"classification":{"method":"product-first software-layer rules","rules_version":"2.1","matched_on":null,"confidence":"unknown","reviewed":false},"change_timestamp":"2026-10-21T01:53:10.056Z","content_hash":"2daeb88b60ac07b4813a574247899be42b8f16a6a2a6e9bf81511fb8f72e2276"}}