{"action":"Upgrade mercurial to 4.7.2 or later.","affected":[{"fixed":"4.7.2","introduced":"0"}],"component":"mercurial","cve_ids":["CVE-2018-17983"],"ecosystem":"PyPI","epss":0.02007,"exploited":false,"fixed_versions":["4.7.2"],"ghsa_id":"GHSA-p575-cf9h-wv42","id":"tcs_01M5KG890FZA0YWG7P826A3NJ0","modified_at":"2026-06-10T17:01:24.129646652Z","published_at":"2018-10-04T23:29:00Z","references":["https://osv.dev/vulnerability/PYSEC-2018-91","https://www.mercurial-scm.org/wiki/WhatsNew#Mercurial_4.7.2_.282018-10-01.29","https://www.mercurial-scm.org/repo/hg/rev/5405cb1a7901","https://github.com/advisories/GHSA-p575-cf9h-wv42"],"severity":{"label":"critical","score":9.1},"sources":[{"source":"osv","source_id":"PYSEC-2018-91","url":"https://osv.dev/vulnerability/PYSEC-2018-91"},{"source":"nvd","source_id":"CVE-2018-17983","url":"https://nvd.nist.gov/vuln/detail/CVE-2018-17983"}],"summary":"cext/manifest.c in Mercurial before 4.7.2 has an out-of-bounds read during parsing of a malformed manifest entry."}