{"cve":{"cve_id":"CVE-2026-66909","is_kev":false,"kev_date_added":null,"kev_vendor_project":null,"kev_product":null,"kev_vulnerability_name":null,"kev_short_description":null,"kev_required_action":null,"kev_due_date":null,"kev_known_ransomware":null,"kev_notes":null,"kev_cwes":null,"epss_score":0.00667,"epss_percentile":0.49207,"epss_as_of":"2026-08-26","description":"Apache CXF's JMS transport deserializes the body of any inbound JMS ObjectMessage using native Java deserialization, with no type restrictions in place. Any attacker able to place a message on the service's JMS destination can submit a malicious serialized object, leading to denial of service or, if a suitable gadget class is on the classpath, remote code execution. The fix disables ObjectMessage deserialization by default, with a configuration switch to re-enable it if needed. Users are recommended to upgrade to versions 4.2.3 or 4.1.8 or 3.6.12, which fix this issue.","published_at":"2026-08-06T10:23:23.571000Z","last_modified_at":"2026-08-07T00:16:39.457000Z","cvss_v3_score":9.8,"cvss_v3_vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","cvss_v3_severity":"CRITICAL","cvss_v4_score":null,"cvss_v4_vector":null,"cvss_v4_severity":null,"ssvc_decision":null,"ssvc_exploitation":"none","ssvc_automatable":true,"ssvc_technical_impact":"total","cwes":["CWE-502"],"nvd_references":["https://lists.apache.org/thread/lr5d4tg6tf7j29jmw8wt242oowonjqpx"],"vuln_status":"Modified","trending_score":null,"is_trending":false,"has_trended":false,"trended_number_one":false,"trending_peak_score":null,"trending_peak_rank":null,"started_trending_at":null,"trended_number_one_at":null,"summary_generated":null,"summary_generated_at":null,"summary_model":null,"created_at":"2026-08-06T12:40:38.297437Z","updated_at":"2026-08-08T21:17:56.756808Z"},"effective_severity":"CRITICAL","badges":[],"impact_analysis":[],"cvss_v3_decoded":{"version":"3.1","metrics":[{"metric":"AV","name":"Attack Vector","value":"N","value_label":"Network"},{"metric":"AC","name":"Attack Complexity","value":"L","value_label":"Low"},{"metric":"PR","name":"Privileges Required","value":"N","value_label":"None"},{"metric":"UI","name":"User Interaction","value":"N","value_label":"None"},{"metric":"S","name":"Scope","value":"U","value_label":"Unchanged"},{"metric":"C","name":"Confidentiality","value":"H","value_label":"High"},{"metric":"I","name":"Integrity","value":"H","value_label":"High"},{"metric":"A","name":"Availability","value":"H","value_label":"High"}]},"cvss_v4_decoded":{"version":null,"metrics":[]},"affected":[{"vendor_slug":"apache","vendor_name":"apache","product_slug":"cxf","product_name":"CXF","version_start":null,"version_start_inclusive":null,"version_end":"3.6.12","version_end_inclusive":false,"cpe23_uri":"cpe:2.3:a:apache:cxf:*:*:*:*:*:*:*:*"},{"vendor_slug":"apache-software-foundation","vendor_name":"Apache Software Foundation","product_slug":"apache-cxf","product_name":"Apache CXF","version_start":"4.2.0","version_start_inclusive":true,"version_end":"4.2.3","version_end_inclusive":false,"cpe23_uri":"cve5:apache-software-foundation:apache-cxf:4.2.0:4.2.3"},{"vendor_slug":"apache-software-foundation","vendor_name":"Apache Software Foundation","product_slug":"apache-cxf","product_name":"Apache CXF","version_start":"4.0.0","version_start_inclusive":true,"version_end":"4.1.8","version_end_inclusive":false,"cpe23_uri":"cve5:apache-software-foundation:apache-cxf:4.0.0:4.1.8"},{"vendor_slug":"apache-software-foundation","vendor_name":"Apache Software Foundation","product_slug":"apache-cxf","product_name":"Apache CXF","version_start":"0","version_start_inclusive":true,"version_end":"3.6.12","version_end_inclusive":false,"cpe23_uri":"cve5:apache-software-foundation:apache-cxf:0:3.6.12"}],"exploit_refs":[],"news":[],"references":[{"url":"https://lists.apache.org/thread/lr5d4tg6tf7j29jmw8wt242oowonjqpx","source_type":"MAILING_LIST","tags":["mailing-list"]}],"timeline":[{"type":"published","at":"2026-08-06T10:23:23.571000Z","label":"CVE published","source":null},{"type":"cvss_changed","at":"2026-08-06T15:40:38.298186Z","label":"CVSS score revised","source":"cvelistv5"},{"type":"cvss_changed","at":"2026-08-06T15:40:38.298186Z","label":"CVSS score revised","source":"cvelistv5"},{"type":"cvss_changed","at":"2026-08-06T15:40:38.298186Z","label":"CVSS score revised","source":"cvelistv5"},{"type":"ssvc_changed","at":"2026-08-06T16:41:38.288298Z","label":"SSVC decision revised","source":"vulnrichment"},{"type":"ssvc_changed","at":"2026-08-06T16:41:38.288298Z","label":"SSVC decision revised","source":"vulnrichment"},{"type":"ssvc_changed","at":"2026-08-06T16:41:38.288298Z","label":"SSVC decision revised","source":"vulnrichment"}]}