{"id":"CVE-2018-17983","aliases":["GHSA-p575-cf9h-wv42","PYSEC-2018-91"],"url":"https://o3.security/vulnerability/CVE-2018-17983","summary":"Mercurial Out-of-bounds Read vulnerability","details":"cext/manifest.c in Mercurial before 4.7.2 has an out-of-bounds read during parsing of a malformed manifest entry.","published":"2018-10-04T23:29:00.417Z","modified":"2026-04-16T06:16:52.322546132Z","cvss":{"score":9.1,"severity":"CRITICAL","vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H"},"epss":null,"cisaKev":null,"exploitsKnown":0,"affectedPackages":[{"ecosystem":"PyPI","name":"mercurial","fixedVersion":"4.7.2"}],"fix":null,"references":[{"type":"ADVISORY","url":"https://www.mercurial-scm.org/wiki/WhatsNew#Mercurial_4.7.2_.282018-10-01.29"},{"type":"FIX","url":"https://www.mercurial-scm.org/repo/hg/rev/5405cb1a7901"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-04-16T06:16:52.322546132Z"}}