{"id":"CVE-2018-1061","revision":"92463a41ee9541009f5afc5added15fb","records":[{"revision":"92463a41ee9541009f5afc5added15fb","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2018-1061","aliases":[],"title":"python before versions 2.7.15, 3.4.9, 3.5.6rc1, 3.6.5rc1 and 3.7.0 is vulnerable to catastrophic backtracking in the difflib.IS_LINE_JUNK method.  An attacker could use this flaw to cause denial of service.","description":"python before versions 2.7.15, 3.4.9, 3.5.6rc1, 3.6.5rc1 and 3.7.0 is vulnerable to catastrophic backtracking in the difflib.IS_LINE_JUNK method.  An attacker could use this flaw to cause denial of service.","state":0,"publishedAt":"2018-06-19T12:00:00+00:00","modifiedAt":"2026-10-15T17:20:16.677+00:00","affected":[{"ecosystem":"Vendor product","name":"python","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"product\": \"python\",\n                    \"vendor\": \"[UNKNOWN]\",\n                    \"versions\": [\n                        {\n                            \"status\": \"affected\",\n                            \"version\": \"python 2.7.15\"\n                        },\n                        {\n                            \"status\": \"affected\",\n                            \"version\": \"python 3.4.9\"\n                        },\n                        {\n                            \"status\": \"affected\",\n                            \"version\": \"python 3.5.6\"\n                        },\n                        {\n                            \"status\": \"affected\",\n                            \"version\": \"python 3.7.0\"\n                        }\n                    ]\n                }"}],"metrics":[{"system":"CVSS 3.0","vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H","score":6.5,"severity":"MEDIUM"}],"references":["https://www.debian.org/security/2018/dsa-4306","https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-1061","http://www.securitytracker.com/id/1042001","https://lists.debian.org/debian-lts-announce/2018/09/msg00031.html","https://bugs.python.org/issue32981","https://usn.ubuntu.com/3817-2/","https://docs.python.org/3.6/whatsnew/changelog.html#python-3-6-5-release-candidate-1","https://docs.python.org/3.5/whatsnew/changelog.html#python-3-5-6-release-candidate-1","https://access.redhat.com/errata/RHSA-2018:3505","https://access.redhat.com/errata/RHSA-2018:3041","https://www.debian.org/security/2018/dsa-4307","https://usn.ubuntu.com/3817-1/","https://lists.debian.org/debian-lts-announce/2018/09/msg00030.html","https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/JSKPGPZQNTAULHW4UH63KGOOUIDE4RRB/","https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/AEZ5IQT7OF7Q2NCGIVABOWYGKO7YU3NJ/","https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/46PVWY5LFP4BRPG3BVQ5QEEFYBVEXHCK/","https://access.redhat.com/errata/RHBA-2019:0327","https://access.redhat.com/errata/RHSA-2019:1260","https://support.hpe.com/hpsc/doc/public/display?docLocale=en_US&docId=emr_na-hpesbst03951en_us","https://access.redhat.com/errata/RHSA-2019:3725","http://lists.opensuse.org/opensuse-security-announce/2020-01/msg00040.html"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2018-1061","license":"CVE Program Terms of Use","key":"cve-program:CVE-2018-1061","identifiers":["CVE-2018-1061"]},"retained":false,"historicalAffected":[]}],"coverage":[]}