{"cve":"CVE-2011-4905","nvd":{"published":"2012-01-05T16:55:00.800","modified":"2026-06-16T23:35:36.270","status":"Modified","description":"Apache ActiveMQ before 5.6.0 allows remote attackers to cause a denial of service (file-descriptor exhaustion and broker crash or hang) by sending many openwire failover:tcp:// connection requests.","cvss_v4":null,"cvss_v3":null,"cwes":["CWE-399"],"references":["http://openwall.com/lists/oss-security/2011/12/25/2","http://openwall.com/lists/oss-security/2011/12/25/6","http://secunia.com/advisories/47112","http://svn.apache.org/viewvc?view=revision&revision=1209700","http://svn.apache.org/viewvc?view=revision&revision=1211844"],"products":["apache:activemq"],"source":"nvd","synced_at":"2026-10-19T19:59:31.623151214+00:00"},"epss":{"cve":"CVE-2011-4905","score":0.08507,"percentile":0.9504,"date":"2026-10-31"},"kev":null,"osv":[{"id":"GHSA-9wcx-326r-7j7w","url":"https://osv.dev/vulnerability/GHSA-9wcx-326r-7j7w","summary":"Denial of Service in Apache ActiveMQ","modified":"2024-12-07T05:41:01.069853Z","packages":[{"ecosystem":"Maven","name":"org.apache.activemq:activemq-core","purl":"pkg:maven/org.apache.activemq/activemq-core","ranges":["<5.6.0"],"fixed":["5.6.0"]}]}],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}