A flaw was found in Mercurial before 4.9. It was possible to use symlinks and subrepositories to defeat Mercurial's path-checking logic and write files outside a repository.
https://www.mercurial-scm.org/wiki/WhatsNew#Mercurial_4.9_.282019-02-01.29
https://usn.ubuntu.com/4086-1/
https://lists.debian.org/debian-lts-announce/2019/04/msg00024.html
https://lists.debian.org/debian-lts-announce/2020/07/msg00032.html
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2019-3902
Source: Mitre, NVD
Published: 2019-04-22
Updated: 2024-11-21
Base Score: 5.8
Vector: CVSS2#AV:N/AC:M/Au:N/C:N/I:P/A:P
Severity: Medium
Base Score: 5.9
Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N
EPSS: 0.00996