{"cve":{"cve_id":"CVE-2026-50734","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":0.0074,"epss_percentile":0.53656,"epss_as_of":"2026-10-15","description":"Memory Allocation with Excessive Size Value vulnerability in Apache ActiveMQ Client, Apache ActiveMQ, Apache ActiveMQ All.\n\nAn unauthenticated network attacker can cause a broker DoS by sending a crafted WireFormatInfo frame with a malicious large size value. The value is not validate and causes the broker to attempt allocation during pre-auth negotiation which can trigger OOM and crash the broker.\nThis issue affects Apache ActiveMQ Client: before 5.19.8, from 6.0.0 before 6.2.7; Apache ActiveMQ: before 5.19.8, from 6.0.0 before 6.2.7; Apache ActiveMQ All: before 5.19.8, from 6.0.0 before 6.2.7.\n\nUsers are recommended to upgrade to version 6.2.7 or 5.19.8, which fixes the issue.","published_at":"2026-06-30T09:53:03.435000Z","last_modified_at":"2026-07-02T18:40:36.210000Z","cvss_v3_score":7.5,"cvss_v3_vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","cvss_v3_severity":"HIGH","cvss_v4_score":null,"cvss_v4_vector":null,"cvss_v4_severity":null,"ssvc_decision":null,"ssvc_exploitation":"none","ssvc_automatable":true,"ssvc_technical_impact":"partial","cwes":["CWE-789"],"nvd_references":["https://lists.apache.org/thread/nxso951fnvf72qf9m475mpz4yf931xk0"],"vuln_status":"Analyzed","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":"2026-06-30T10:46:12.618246Z","updated_at":"2026-07-04T01:43:39.485079Z"},"effective_severity":"HIGH","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":"N","value_label":"None"},{"metric":"I","name":"Integrity","value":"N","value_label":"None"},{"metric":"A","name":"Availability","value":"H","value_label":"High"}]},"cvss_v4_decoded":{"version":null,"metrics":[]},"affected":[{"vendor_slug":"apache","vendor_name":"apache","product_slug":"activemq","product_name":"ActiveMQ","version_start":null,"version_start_inclusive":null,"version_end":"5.19.8","version_end_inclusive":false,"cpe23_uri":"cpe:2.3:a:apache:activemq:*:*:*:*:*:*:*:*"},{"vendor_slug":"apache-software-foundation","vendor_name":"Apache Software Foundation","product_slug":"apache-activemq","product_name":"Apache ActiveMQ","version_start":"0","version_start_inclusive":true,"version_end":"5.19.8","version_end_inclusive":false,"cpe23_uri":"cve5:apache-software-foundation:apache-activemq:0:5.19.8"},{"vendor_slug":"apache-software-foundation","vendor_name":"Apache Software Foundation","product_slug":"apache-activemq","product_name":"Apache ActiveMQ","version_start":"6.0.0","version_start_inclusive":true,"version_end":"6.2.7","version_end_inclusive":false,"cpe23_uri":"cve5:apache-software-foundation:apache-activemq:6.0.0:6.2.7"},{"vendor_slug":"apache-software-foundation","vendor_name":"Apache Software Foundation","product_slug":"apache-activemq-all","product_name":"Apache ActiveMQ All","version_start":"0","version_start_inclusive":true,"version_end":"5.19.8","version_end_inclusive":false,"cpe23_uri":"cve5:apache-software-foundation:apache-activemq-all:0:5.19.8"},{"vendor_slug":"apache-software-foundation","vendor_name":"Apache Software Foundation","product_slug":"apache-activemq-all","product_name":"Apache ActiveMQ All","version_start":"6.0.0","version_start_inclusive":true,"version_end":"6.2.7","version_end_inclusive":false,"cpe23_uri":"cve5:apache-software-foundation:apache-activemq-all:6.0.0:6.2.7"},{"vendor_slug":"apache-software-foundation","vendor_name":"Apache Software Foundation","product_slug":"apache-activemq-client","product_name":"Apache ActiveMQ Client","version_start":"0","version_start_inclusive":true,"version_end":"5.19.8","version_end_inclusive":false,"cpe23_uri":"cve5:apache-software-foundation:apache-activemq-client:0:5.19.8"},{"vendor_slug":"apache-software-foundation","vendor_name":"Apache Software Foundation","product_slug":"apache-activemq-client","product_name":"Apache ActiveMQ Client","version_start":"6.0.0","version_start_inclusive":true,"version_end":"6.2.7","version_end_inclusive":false,"cpe23_uri":"cve5:apache-software-foundation:apache-activemq-client:6.0.0:6.2.7"}],"exploit_refs":[],"news":[],"references":[{"url":"https://lists.apache.org/thread/nxso951fnvf72qf9m475mpz4yf931xk0","source_type":"MAILING_LIST","tags":["mailing-list"]}],"timeline":[{"type":"published","at":"2026-06-30T09:53:03.435000Z","label":"CVE published","source":null},{"type":"ssvc_changed","at":"2026-06-30T13:46:12.619479Z","label":"SSVC decision revised","source":"vulnrichment"},{"type":"ssvc_changed","at":"2026-06-30T13:46:12.619479Z","label":"SSVC decision revised","source":"vulnrichment"},{"type":"ssvc_changed","at":"2026-06-30T13:46:12.619479Z","label":"SSVC decision revised","source":"vulnrichment"},{"type":"cvss_changed","at":"2026-06-30T13:46:12.619479Z","label":"CVSS score revised","source":"vulnrichment"},{"type":"cvss_changed","at":"2026-06-30T13:46:12.619479Z","label":"CVSS score revised","source":"vulnrichment"},{"type":"cvss_changed","at":"2026-06-30T13:46:12.619479Z","label":"CVSS score revised","source":"vulnrichment"}]}