{"schema":"threatline.record/2","record":{"id":"CVE-2019-18426","aliases":[],"summary":"WhatsApp Cross-Site Scripting Vulnerability","details":"A vulnerability in WhatsApp Desktop when paired with WhatsApp for iPhone allows cross-site scripting and local file reading.","categories":["Applications & CMS"],"product":"WhatsApp","vendor":"Meta Platforms","ecosystem":null,"affected_ranges":[{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2019-18426","source_modified_at":"2025-10-21T23:35:53.174Z","fetched_at":"2026-10-23T18:42:43.628194Z","product":"WhatsApp Desktop","vendor":"Facebook","versions":[{"status":"affected","version":"0.3.9309"},{"lessThan":"0.3.9309","status":"affected","version":"unspecified","versionType":"custom"}],"defaultStatus":null}],"fixed_versions":[{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2019-18426","source_modified_at":"2025-10-21T23:35:53.174Z","fetched_at":"2026-10-23T18:42:43.628194Z","package":{"name":"WhatsApp Desktop","ecosystem":null},"version":"0.3.9309","basis":"first unaffected version stated in the CVE record"}],"cvss":8.2,"severity":"High","kev":{"listed":true,"date_added":"2022-05-23","due_date":"2022-06-13","required_action":"Apply updates per vendor instructions.","ransomware_campaign_use":"Unknown"},"epss":{"probability":0.67859,"percentile":0.99322,"score_date":"2026-10-23"},"published_at":"2020-01-21T20:30:15.000Z","modified_at":"2025-10-21T23:35:53.174Z","provenance":[{"source":"CISA KEV","url":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","fetched_at":"2026-10-23T18:42:43.628194Z","source_modified_at":"2026-10-23T17:00:09.9001Z"},{"source":"CVE List","url":"https://www.cve.org/CVERecord?id=CVE-2019-18426","fetched_at":"2026-10-23T18:42:43.628194Z","source_modified_at":"2025-10-21T23:35:53.174Z"},{"source":"Exploit-DB","url":"https://www.exploit-db.com/exploits/48295","fetched_at":"2026-10-23T18:42:43.628194Z","source_modified_at":"2020-04-06"},{"source":"EPSS","url":"https://api.first.org/data/v1/epss?cve=CVE-2019-18426","fetched_at":"2026-10-23T18:42:43.628194Z","source_modified_at":"2026-10-23"}],"sources":["CISA KEV","CVE List","Exploit-DB","EPSS"],"references":[{"url":"https://nvd.nist.gov/vuln/detail/CVE-2019-18426","source":"CISA KEV"},{"source":"CVE List","url":"https://www.facebook.com/security/advisories/cve-2019-18426","tags":["x_refsource_CONFIRM","x_transferred"]},{"source":"CVE List","url":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2019-18426","tags":["government-resource"]}],"locations":[],"motoko_assessment":{"status":"requires_architecture_review","automatic_remediation":false},"cve_state":"PUBLISHED","cvss_source":"CISA ADP","ssvc":{"exploitation":"active","automatable":"no","technical_impact":"partial","assessed_at":"2025-02-07T12:55:17.810586Z"},"exploits":[{"source":"Exploit-DB","kind":"Webapps exploit","name":"WhatsApp Desktop 0.3.9308 - Persistent Cross-Site Scripting","url":"https://www.exploit-db.com/exploits/48295","date":"2020-04-06","added":"2020-04-06","verified":false}],"classification":{"method":"product-first software-layer rules","rules_version":"2.1","matched_on":"product","confidence":"heuristic","reviewed":false},"change_timestamp":"2025-10-21T23:35:53.174Z","content_hash":"fdb17772638811bf982767978b34838a69c22ab9a60b38f68b92f56abcf0c378"}}