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If an attacker creates another server to proxy the original, and bound that, he effectively becomes a man in the middle and is able to intercept the credentials when an user connects. Upgrade to Apache ActiveMQ 5.15.12.","references":[{"reference_url":"https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2020-13920.json","reference_id":"","reference_type":"","scores":[{"value":"5.9","scoring_system":"cvssv3","scoring_elements":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N"}],"url":"https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2020-13920.json"},{"reference_url":"https://api.first.org/data/v1/epss?cve=CVE-2020-13920","reference_id":"","reference_type":"","scores":[{"value":"0.00174","scoring_system":"epss","scoring_elements":"0.38564","published_at":"2026-04-24T12:55:00Z"},{"value":"0.00174","scoring_system":"epss","scoring_elements":"0.38728","published_at":"2026-04-21T12:55:00Z"},{"value":"0.00174","scoring_system":"epss","scoring_elements":"0.38808","published_at":"2026-04-18T12:55:00Z"},{"value":"0.00174","scoring_system":"epss","scoring_elements":"0.3883","published_at":"2026-04-16T12:55:00Z"},{"value":"0.00174","scoring_system":"epss","scoring_elements":"0.38451","published_at":"2026-04-29T12:55:00Z"},{"value":"0.00174","scoring_system":"epss","scoring_elements":"0.38785","published_at":"2026-04-13T12:55:00Z"},{"value":"0.00174","scoring_system":"epss","scoring_elements":"0.38813","published_at":"2026-04-12T12:55:00Z"},{"value":"0.00174","scoring_system":"epss","scoring_elements":"0.38849","published_at":"2026-04-11T12:55:00Z"},{"value":"0.00174","scoring_system":"epss","scoring_elements":"0.38837","published_at":"2026-04-09T12:55:00Z"},{"value":"0.00174","scoring_system":"epss","scoring_elements":"0.38826","published_at":"2026-04-08T12:55:00Z"},{"value":"0.00174","scoring_system":"epss","scoring_elements":"0.38539","published_at":"2026-04-26T12:55:00Z"},{"value":"0.00179","scoring_system":"epss","scoring_elements":"0.39537","published_at":"2026-04-04T12:55:00Z"},{"value":"0.00179","scoring_system":"epss","scoring_elements":"0.39352","published_at":"2026-04-01T12:55:00Z"},{"value":"0.00179","scoring_system":"epss","scoring_elements":"0.39514","published_at":"2026-04-02T12:55:00Z"},{"value":"0.00179","scoring_system":"epss","scoring_elements":"0.39451","published_at":"2026-04-07T12:55:00Z"}],"url":"https://api.first.org/data/v1/epss?cve=CVE-2020-13920"},{"reference_url":"https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-13920","reference_id":"","reference_type":"","scores":[],"url":"https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-13920"},{"reference_url":"https://github.com/apache/activemq","reference_id":"","reference_type":"","scores":[{"value":"5.9","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N"},{"value":"MODERATE","scoring_system":"generic_textual","scoring_elements":""}],"url":"https://github.com/apache/activemq"},{"reference_url":"https://github.com/apache/activemq/commit/359ae4b","reference_id":"","reference_type":"","scores":[{"value":"5.9","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N"},{"value":"MODERATE","scoring_system":"generic_textual","scoring_elements":""}],"url":"https://github.com/apache/activemq/commit/359ae4b"},{"reference_url":"https://github.com/apache/activemq/commit/48cd61d","reference_id":"","reference_type":"","scores":[{"value":"5.9","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N"},{"value":"MODERATE","scoring_system":"generic_textual","scoring_elements":""}],"url":"https://github.com/apache/activemq/commit/48cd61d"},{"reference_url":"https://github.com/apache/activemq/commit/58382283330f7c7b110c7afd8ef4ca2648786532","reference_id":"","reference_type":"","scores":[{"value":"5.9","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N"},{"value":"MODERATE","scoring_system":"generic_textual","scoring_elements":""}],"url":"https://github.com/apache/activemq/commit/58382283330f7c7b110c7afd8ef4ca2648786532"},{"reference_url":"https://github.com/apache/activemq/commit/b7dca5e","reference_id":"","reference_type":"","scores":[{"value":"5.9","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N"},{"value":"MODERATE","scoring_system":"generic_textual","scoring_elements":""}],"url":"https://github.com/apache/activemq/commit/b7dca5e"},{"reference_url":"https://issues.apache.org/jira/browse/AMQ-7400","reference_id":"","reference_type":"","scores":[{"value":"5.9","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N"},{"value":"MODERATE","scoring_system":"generic_textual","scoring_elements":""}],"url":"https://issues.apache.org/jira/browse/AMQ-7400"},{"reference_url":"https://lists.apache.org/thread.html/r946488fb942fd35c6a6e0359f52504a558ed438574a8f14d36d7dcd7@%3Ccommits.activemq.apache.org%3E","reference_id":"","reference_type":"","scores":[{"value":"5.9","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N"},{"value":"MODERATE","scoring_system":"generic_textual","scoring_el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