{"id":"CVE-2018-1000132","aliases":["GHSA-4mr4-7vjv-9hm6","PYSEC-2018-87"],"url":"https://o3.security/vulnerability/CVE-2018-1000132","summary":"Mercurial Incorrect Access Control vulnerability","details":"Mercurial version 4.5 and earlier contains a Incorrect Access Control (CWE-285) vulnerability in Protocol server that can result in Unauthorized data access. This attack appear to be exploitable via network connectivity. This vulnerability appears to have been fixed in 4.5.1.","published":"2018-03-14T13:29:00.407Z","modified":"2026-04-16T06:16:27.027424123Z","cvss":{"score":9.1,"severity":"CRITICAL","vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N"},"epss":{"score":0.02617,"percentile":0.84697,"asOf":"2026-09-17"},"cisaKev":null,"exploitsKnown":0,"affectedPackages":[{"ecosystem":"PyPI","name":"mercurial","fixedVersion":"4.5.1"}],"fix":null,"references":[{"type":"WEB","url":"https://lists.debian.org/debian-lts-announce/2020/07/msg00032.html"},{"type":"ADVISORY","url":"https://lists.debian.org/debian-lts-announce/2018/07/msg00005.html"},{"type":"ADVISORY","url":"https://www.mercurial-scm.org/wiki/WhatsNew#Mercurial_4.5.1_.2F_4.5.2_.282018-03-06.29"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2019:2276"},{"type":"ADVISORY","url":"https://lists.debian.org/debian-lts-announce/2018/03/msg00034.html"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2018-1000132"},{"type":"WEB","url":"https://github.com/pypa/advisory-database/tree/main/vulns/mercurial/PYSEC-2018-87.yaml"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-04-16T06:16:27.027424123Z"}}