{"id":"CVE-2024-28757","title":"libexpat through 2.6.1 allows an XML Entity Expansion attack when there is isolated use of external parsers (created via XML_ExternalEntityParserCreate).","summary":"libexpat through 2.6.1 allows an XML Entity Expansion attack when there is isolated use of external parsers (created via XML_ExternalEntityParserCreate).","severity":"high","cvss":7.5,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","cwe":["CWE-776"],"vendor":"libexpat_project","product":"libexpat","affected":["libexpat < 2.6.2","fedora = 38","fedora = 39","fedora = 40","active_iq_unified_manager","oncommand_workflow_automation","ontap = 9","ontap_tools = 10","windows_host_utilities","h300s_firmware","h500s_firmware","h700s_firmware","h410s_firmware","h410c_firmware","h610c_firmware","h610s_firmware"],"patched":["libexpat 2.6.2"],"published":"2024-03-10","updated":"2026-10-15","sourceUpdated":"2026-10-15T01:17:42.003","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2024-28757","references":[{"url":"http://www.openwall.com/lists/oss-security/2024/03/15/1","label":"cve@mitre.org"},{"url":"https://github.com/libexpat/libexpat/issues/839","label":"cve@mitre.org"},{"url":"https://github.com/libexpat/libexpat/pull/842","label":"cve@mitre.org"},{"url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/FPLC6WDSRDUYS7F7JWAOVOHFNOUQ43DD/","label":"cve@mitre.org"},{"url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/LKJ7V5F6LJCEQJXDBWGT27J7NAP3E3N7/","label":"cve@mitre.org"},{"url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/VK2O34GH43NTHBZBN7G5Y6YKJKPUCTBE/","label":"cve@mitre.org"},{"url":"https://security.netapp.com/advisory/ntap-20240322-0001/","label":"cve@mitre.org"},{"url":"http://www.openwall.com/lists/oss-security/2024/03/15/1","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://github.com/libexpat/libexpat/issues/839","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://github.com/libexpat/libexpat/pull/842","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/FPLC6WDSRDUYS7F7JWAOVOHFNOUQ43DD/","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/LKJ7V5F6LJCEQJXDBWGT27J7NAP3E3N7/","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/VK2O34GH43NTHBZBN7G5Y6YKJKPUCTBE/","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/FPLC6WDSRDUYS7F7JWAOVOHFNOUQ43DD/","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/LKJ7V5F6LJCEQJXDBWGT27J7NAP3E3N7/","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/VK2O34GH43NTHBZBN7G5Y6YKJKPUCTBE/","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://security.netapp.com/advisory/ntap-20240322-0001/","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://cert-portal.siemens.com/productcert/html/ssa-398330.html","label":"0b142b55-0307-4c5a-b3c9-f314f3fb7c5e"},{"url":"https://cert-portal.siemens.com/productcert/html/ssa-784301.html","label":"0b142b55-0307-4c5a-b3c9-f314f3fb7c5e"}],"tags":["nvd","exploit-available","cve.org"],"epss":0.02006,"epssPercentile":0.80423,"exploits":{"github":2,"githubRepos":["https://github.com/RenukaSelvar/expat_CVE-2024-28757","https://github.com/saurabh2088/expat_2_1_0_CVE-2024-28757"],"checkedAt":"2026-10-15T03:30:48.733Z"},"exploitAvailable":true,"ingestedAt":"2026-10-15T03:30:12.641Z","ssvc":{"exploitation":"none","automatable":"no","technicalImpact":"partial","timestamp":"2024-03-11T13:15:18.395170Z"},"slug":"CVE-2024-28757","body":"## Overview\n\nlibexpat through 2.6.1 allows an XML Entity Expansion attack when there is isolated use of external parsers (created via XML_ExternalEntityParserCreate).\n\n## Affected\n\n- `libexpat < 2.6.2`\n- `fedora = 38`\n- `fedora = 39`\n- `fedora = 40`\n- `active_iq_unified_manager`\n- `oncommand_workflow_automation`\n- `ontap = 9`\n- `ontap_tools = 10`\n- `windows_host_utilities`\n- `h300s_firmware`\n- `h500s_firmware`\n- `h700s_firmware`\n- `h410s_firmware`\n- `h410c_firmware`\n- `h610c_firmware`\n- `h610s_firmware`\n\n## Remediation\n\nUpgrade past the affected range:\n\n- `libexpat 2.6.2`","depth":"midnight","depthScore":54,"depthScoreParts":{"impact":41.3,"likelihood":0.4,"exploitation":12,"ransomware":0},"changes":[]}