{"id":"CVE-2019-15903","title":"In libexpat before 2.2.8, crafted XML input could fool the parser into changing from DTD parsing to document parsing too early; a consecutive call to XML_GetCurrentLineNumber (or XML_GetCurrentColumnNumber) then resulted in a heap-based …","summary":"In libexpat before 2.2.8, crafted XML input could fool the parser into changing from DTD parsing to document parsing too early; a consecutive call to XML_GetCurrentLineNumber (or XML_GetCurrentColumnNumber) then resulted in a heap-based …","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-125","CWE-776","CWE-125"],"vendor":"libexpat_project","product":"libexpat","affected":["libexpat < 2.2.8","python >= 2.7.0, < 2.7.17","python >= 3.5.0, < 3.5.8","python >= 3.6.0, < 3.6.10","python >= 3.7.0, < 3.7.5"],"patched":["libexpat 2.2.8","python 3.7.5"],"published":"2019-09-04","updated":"2026-10-14","sourceUpdated":"2026-10-14T07:16:47.100","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2019-15903","references":[{"url":"http://lists.opensuse.org/opensuse-security-announce/2019-09/msg00080.html","label":"cve@mitre.org"},{"url":"http://lists.opensuse.org/opensuse-security-announce/2019-09/msg00081.html","label":"cve@mitre.org"},{"url":"http://lists.opensuse.org/opensuse-security-announce/2019-11/msg00000.html","label":"cve@mitre.org"},{"url":"http://lists.opensuse.org/opensuse-security-announce/2019-11/msg00002.html","label":"cve@mitre.org"},{"url":"http://lists.opensuse.org/opensuse-security-announce/2019-11/msg00003.html","label":"cve@mitre.org"},{"url":"http://lists.opensuse.org/opensuse-security-announce/2019-11/msg00013.html","label":"cve@mitre.org"},{"url":"http://lists.opensuse.org/opensuse-security-announce/2019-11/msg00016.html","label":"cve@mitre.org"},{"url":"http://lists.opensuse.org/opensuse-security-announce/2019-11/msg00017.html","label":"cve@mitre.org"},{"url":"http://lists.opensuse.org/opensuse-security-announce/2019-11/msg00018.html","label":"cve@mitre.org"},{"url":"http://lists.opensuse.org/opensuse-security-announce/2019-11/msg00019.html","label":"cve@mitre.org"},{"url":"http://lists.opensuse.org/opensuse-security-announce/2020-01/msg00008.html","label":"cve@mitre.org"},{"url":"http://lists.opensuse.org/opensuse-security-announce/2020-01/msg00040.html","label":"cve@mitre.org"},{"url":"http://packetstormsecurity.com/files/154503/Slackware-Security-Advisory-expat-Updates.html","label":"cve@mitre.org"},{"url":"http://packetstormsecurity.com/files/154927/Slackware-Security-Advisory-python-Updates.html","label":"cve@mitre.org"},{"url":"http://packetstormsecurity.com/files/154947/Slackware-Security-Advisory-mozilla-firefox-Updates.html","label":"cve@mitre.org"},{"url":"http://seclists.org/fulldisclosure/2019/Dec/23","label":"cve@mitre.org"},{"url":"http://seclists.org/fulldisclosure/2019/Dec/26","label":"cve@mitre.org"},{"url":"http://seclists.org/fulldisclosure/2019/Dec/27","label":"cve@mitre.org"},{"url":"http://seclists.org/fulldisclosure/2019/Dec/30","label":"cve@mitre.org"},{"url":"https://access.redhat.com/errata/RHSA-2019:3210","label":"cve@mitre.org"},{"url":"https://access.redhat.com/errata/RHSA-2019:3237","label":"cve@mitre.org"},{"url":"https://access.redhat.com/errata/RHSA-2019:3756","label":"cve@mitre.org"},{"url":"https://github.com/libexpat/libexpat/commit/c20b758c332d9a13afbbb276d30db1d183a85d43","label":"cve@mitre.org"},{"url":"https://github.com/libexpat/libexpat/issues/317","label":"cve@mitre.org"},{"url":"https://github.com/libexpat/libexpat/issues/342","label":"cve@mitre.org"},{"url":"https://github.com/libexpat/libexpat/pull/318","label":"cve@mitre.org"},{"url":"https://lists.debian.org/debian-lts-announce/2019/11/msg00006.html","label":"cve@mitre.org"},{"url":"https://lists.debian.org/debian-lts-announce/2019/11/msg00017.html","label":"cve@mitre.org"},{"url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/A4TZKPJFTURRLXIGLB34WVKQ5HGY6JJA/","label":"cve@mitre.org"},{"url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/BDUTI5TVQWIGGQXPEVI4T2ENHFSBMIBP/","label":"cve@mitre.org"},{"url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/S26LGXXQ7YF2BP3RGOWELBFKM6BHF6UG/","label":"cve@mitre.org"},{"url":"https://seclists.org/bugtraq/2019/Dec/17","label":"cve@mitre.org"},{"url":"https://seclists.org/bugtraq/2019/Dec/21","label":"cve@mitre.org"},{"url":"https://seclists.org/bugtraq/2019/Dec/23","label":"cve@mitre.org"},{"url":"https://seclists.org/bugtraq/2019/Nov/1","label":"cve@mitre.org"},{"url":"https://seclists.org/bugtraq/2019/Nov/24","label":"cve@mitre.org"},{"url":"https://seclists.org/bugtraq/2019/Oct/29","label":"cve@mitre.org"},{"url":"https://seclists.org/bugtraq/2019/Sep/30","label":"cve@mitre.org"},{"url":"https://seclists.org/bugtraq/2019/Sep/37","label":"cve@mitre.org"},{"url":"https://security.gentoo.org/glsa/201911-08","label":"cve@mitre.org"},{"url":"https://security.netapp.com/advisory/ntap-20190926-0004/","label":"cve@mitre.org"},{"url":"https://support.apple.com/kb/HT210785","label":"cve@mitre.org"},{"url":"https://support.apple.com/kb/HT210788","label":"cve@mitre.org"},{"url":"https://support.apple.com/kb/HT210789","label":"cve@mitre.org"},{"url":"https://support.apple.com/kb/HT210790","label":"cve@mitre.org"},{"url":"https://support.apple.com/kb/HT210793","label":"cve@mitre.org"},{"url":"https://support.apple.com/kb/HT210794","label":"cve@mitre.org"},{"url":"https://support.apple.com/kb/HT210795","label":"cve@mitre.org"},{"url":"https://usn.ubuntu.com/4132-1/","label":"cve@mitre.org"},{"url":"https://usn.ubuntu.com/4132-2/","label":"cve@mitre.org"},{"url":"https://usn.ubuntu.com/4165-1/","label":"cve@mitre.org"},{"url":"https://usn.ubuntu.com/4202-1/","label":"cve@mitre.org"},{"url":"https://usn.ubuntu.com/4335-1/","label":"cve@mitre.org"},{"url":"https://www.debian.org/security/2019/dsa-4530","label":"cve@mitre.org"},{"url":"https://www.debian.org/security/2019/dsa-4549","label":"cve@mitre.org"},{"url":"https://www.debian.org/security/2019/dsa-4571","label":"cve@mitre.org"},{"url":"https://www.oracle.com/security-alerts/cpuapr2020.html","label":"cve@mitre.org"},{"url":"https://www.oracle.com/security-alerts/cpuoct2020.html","label":"cve@mitre.org"},{"url":"https://www.tenable.com/security/tns-2021-11","label":"cve@mitre.org"},{"url":"http://lists.opensuse.org/opensuse-security-announce/2019-09/msg00080.html","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://lists.opensuse.org/opensuse-security-announce/2019-09/msg00081.html","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://lists.opensuse.org/opensuse-security-announce/2019-11/msg00000.html","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://lists.opensuse.org/opensuse-security-announce/2019-11/msg00002.html","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://lists.opensuse.org/opensuse-security-announce/2019-11/msg00003.html","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://lists.opensuse.org/opensuse-security-announce/2019-11/msg00013.html","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://lists.opensuse.org/opensuse-security-announce/2019-11/msg00016.html","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://lists.opensuse.org/opensuse-security-announce/2019-11/msg00017.html","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://lists.opensuse.org/opensuse-security-announce/2019-11/msg00018.html","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://lists.opensuse.org/opensuse-security-announce/2019-11/msg00019.html","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://lists.opensuse.org/opensuse-security-announce/2020-01/msg00008.html","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://lists.opensuse.org/opensuse-security-announce/2020-01/msg00040.html","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://packetstormsecurity.com/files/154503/Slackware-Security-Advisory-expat-Updates.html","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://packetstormsecurity.com/files/154927/Slackware-Security-Advisory-python-Updates.html","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://packetstormsecurity.com/files/154947/Slackware-Security-Advisory-mozilla-firefox-Updates.html","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://seclists.org/fulldisclosure/2019/Dec/23","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://seclists.org/fulldisclosure/2019/Dec/26","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://seclists.org/fulldisclosure/2019/Dec/27","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://seclists.org/fulldisclosure/2019/Dec/30","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://access.redhat.com/errata/RHSA-2019:3210","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://access.redhat.com/errata/RHSA-2019:3237","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://access.redhat.com/errata/RHSA-2019:3756","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://github.com/libexpat/libexpat/commit/c20b758c332d9a13afbbb276d30db1d183a85d43","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://github.com/libexpat/libexpat/issues/317","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://github.com/libexpat/libexpat/issues/342","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://github.com/libexpat/libexpat/pull/318","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://lists.debian.org/debian-lts-announce/2019/11/msg00006.html","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://lists.debian.org/debian-lts-announce/2019/11/msg00017.html","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/A4TZKPJFTURRLXIGLB34WVKQ5HGY6JJA/","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/BDUTI5TVQWIGGQXPEVI4T2ENHFSBMIBP/","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/S26LGXXQ7YF2BP3RGOWELBFKM6BHF6UG/","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://seclists.org/bugtraq/2019/Dec/17","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://seclists.org/bugtraq/2019/Dec/21","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://seclists.org/bugtraq/2019/Dec/23","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://seclists.org/bugtraq/2019/Nov/1","label":"af854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Overview\n\nIn libexpat before 2.2.8, crafted XML input could fool the parser into changing from DTD parsing to document parsing too early; a consecutive call to XML_GetCurrentLineNumber (or XML_GetCurrentColumnNumber) then resulted in a heap-based buffer over-read.\n\n## Affected\n\n- `libexpat < 2.2.8`\n- `python >= 2.7.0, < 2.7.17`\n- `python >= 3.5.0, < 3.5.8`\n- `python >= 3.6.0, < 3.6.10`\n- `python >= 3.7.0, < 3.7.5`\n\n## Remediation\n\nUpgrade past the affected range:\n\n- `libexpat 2.2.8`\n- `python 3.7.5`","depth":"twilight","depthScore":43,"depthScoreParts":{"impact":41.3,"likelihood":1.3,"exploitation":0,"ransomware":0},"changes":[]}