CVE catalog

CVE-2019-3902

mercurial: CVE-2019-3902

Severity: Medium · CVSS 5CVSS:3.0/AV:L/AC:L/PR:L/UI:R/S:U/C:N/I:H/A:N
Published: Apr 22, 2019, 12:00:00 AM UTC
Source: [NVD] · [CVE record]
EPSS: 1.37% · Oct 25, 2026

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.

Vulnerable and fixed packages

Distribution-reported package versions and fixes. These do not depend on matching against the OpenFactory package catalog.

Distribution	Package	Release	Version	Status
Debian	mercurial	sid	`7.2.4-2`	fixed
Debian	mercurial	forky	`7.2.4-2`	fixed
Debian	mercurial	trixie	`7.0.1-2`	fixed
Debian	mercurial	bookworm	`6.3.2-1+deb12u1`	fixed
Debian	mercurial	bookworm-security	`6.3.2-1+deb12u1`	fixed
Alpine	mercurial	3.10	`4.9-r0`	fixed
Alpine	mercurial	3.11	`4.9-r0`	fixed
Alpine	mercurial	3.12	`4.9-r0`	fixed
Alpine	mercurial	3.13	`4.9-r0`	fixed
Alpine	mercurial	3.7	`4.5.2-r1`	fixed
Alpine	mercurial	3.8	`4.6.1-r1`	fixed
Alpine	mercurial	3.9	`4.9-r0`	fixed
Ubuntu	mercurial	pro	`3.4-1ubuntu2`	vulnerable
Ubuntu	mercurial	pro	`3.6.2-1ubuntu2`	vulnerable
Ubuntu	mercurial	pro	`3.7.3-1ubuntu1`	vulnerable
Ubuntu	mercurial	pro	`3.7.3-1ubuntu1.1`	vulnerable
Ubuntu	mercurial	pro	`3.7.3-1ubuntu1.2`	vulnerable
Ubuntu	mercurial	pro	`3.7.3-1ubuntu1.2+esm2`	fixed
Ubuntu	mercurial	18.04	`4.3.1-2`	vulnerable
Ubuntu	mercurial	18.04	`4.5-1ubuntu1`	vulnerable
Ubuntu	mercurial	18.04	`4.5.2-0ubuntu2`	vulnerable
Ubuntu	mercurial	18.04	`4.5.3-1ubuntu2`	vulnerable
Ubuntu	mercurial	18.04	`4.5.3-1ubuntu2.1`	vulnerable
Ubuntu	mercurial	18.04	`4.5.3-1ubuntu2.2`	fixed
Suse	mercurial	linux enterprise module for python 2 15 sp1	`4.5.2-3.9.44`	fixed
Opensuse	mercurial	leap 15.2	`4.5.2-lp152.7.3.1`	fixed
Opensuse	mercurial	leap 15.1	`4.5.2-lp151.6.3.1`	fixed
Suse	mercurial	linux enterprise software development kit 12 sp5	`2.8.2-15.18.4`	fixed
Suse	mercurial	linux enterprise module for python 2 15 sp2	`4.5.2-3.9.44`	fixed

Fixed-version evidence

Distribution	Package	Type	Release	Fixed version	Urgency	Origin	Bugs
Debian	mercurial	source	sid	`4.9-1`	not yet assigned	Not reported	[927674]
Debian	mercurial	source	forky	`4.9-1`	not yet assigned	Not reported	[927674]
Debian	mercurial	source	trixie	`4.9-1`	not yet assigned	Not reported	[927674]
Debian	mercurial	source	bookworm	`4.9-1`	not yet assigned	Not reported	[927674]
Alpine	mercurial	apk	3.10	`4.9-r0`	Not reported	ALPINE-CVE-2019-3902	Not reported
Alpine	mercurial	apk	3.11	`4.9-r0`	Not reported	ALPINE-CVE-2019-3902	Not reported
Alpine	mercurial	apk	3.12	`4.9-r0`	Not reported	ALPINE-CVE-2019-3902	Not reported
Alpine	mercurial	apk	3.13	`4.9-r0`	Not reported	ALPINE-CVE-2019-3902	Not reported
Alpine	mercurial	apk	3.7	`4.5.2-r1`	Not reported	ALPINE-CVE-2019-3902	Not reported
Alpine	mercurial	apk	3.8	`4.6.1-r1`	Not reported	ALPINE-CVE-2019-3902	Not reported
Alpine	mercurial	apk	3.9	`4.9-r0`	Not reported	ALPINE-CVE-2019-3902	Not reported
Ubuntu	mercurial	deb	pro	`3.7.3-1ubuntu1.2+esm2`	Not reported	UBUNTU-CVE-2019-3902	Not reported
Ubuntu	mercurial	deb	18.04	`4.5.3-1ubuntu2.2`	Not reported	UBUNTU-CVE-2019-3902	Not reported
Suse	mercurial	rpm	linux enterprise module for python 2 15 sp1	`4.5.2-3.9.44`	Not reported	SUSE-SU-2020:1709-1	Not reported
Opensuse	mercurial	rpm	leap 15.2	`4.5.2-lp152.7.3.1`	Not reported	OPENSUSE-SU-2020:0880-1	Not reported
Opensuse	mercurial	rpm	leap 15.1	`4.5.2-lp151.6.3.1`	Not reported	OPENSUSE-SU-2020:0869-1	Not reported
Suse	mercurial	rpm	linux enterprise software development kit 12 sp5	`2.8.2-15.18.4`	Not reported	SUSE-SU-2020:3003-1	Not reported
Suse	mercurial	rpm	linux enterprise module for python 2 15 sp2	`4.5.2-3.9.44`	Not reported	SUSE-SU-2020:1709-2	Not reported

[Debian bug #927674]

OpenFactory catalog packages

[Debian 12 (Bookworm)]

[mercurial]Fixed
Details (4)
- 6.3.2-1+deb12u1 · amd64 · bookworm
  Fixed · Fixed: 4.9-1
  dsa · mercurial · debian · bookworm; dsa · mercurial · debian · 12
- 6.3.2-1+deb12u1 · arm64 · bookworm
  Fixed · Fixed: 4.9-1
  dsa · mercurial · debian · bookworm; dsa · mercurial · debian · 12
- 6.3.2-1+deb12u1 · amd64 · bookworm-security
  Fixed · Fixed: 4.9-1
  dsa · mercurial · debian · bookworm; dsa · mercurial · debian · 12
- 6.3.2-1+deb12u1 · arm64 · bookworm-security
  Fixed · Fixed: 4.9-1
  dsa · mercurial · debian · bookworm; dsa · mercurial · debian · 12
[mercurial-common]Fixed
Source package: [mercurial]
Details (4)
- 6.3.2-1+deb12u1 · all · bookworm
  Fixed · Fixed: 4.9-1
  dsa · mercurial · debian · bookworm; dsa · mercurial · debian · 12
- 6.3.2-1+deb12u1 · all · bookworm
  Fixed · Fixed: 4.9-1
  dsa · mercurial · debian · bookworm; dsa · mercurial · debian · 12
- 6.3.2-1+deb12u1 · all · bookworm-security
  Fixed · Fixed: 4.9-1
  dsa · mercurial · debian · bookworm; dsa · mercurial · debian · 12
- 6.3.2-1+deb12u1 · all · bookworm-security
  Fixed · Fixed: 4.9-1
  dsa · mercurial · debian · bookworm; dsa · mercurial · debian · 12

[Debian 13 (Trixie)]

[mercurial]Fixed
Details (2)
- 7.0.1-2 · amd64 · trixie
  Fixed · Fixed: 4.9-1
  dsa · mercurial · debian · 13
- 7.0.1-2 · arm64 · trixie
  Fixed · Fixed: 4.9-1
  dsa · mercurial · debian · 13
[mercurial-common]Fixed
Source package: [mercurial]
Details (2)
- 7.0.1-2 · all · trixie
  Fixed · Fixed: 4.9-1
  dsa · mercurial · debian · 13
- 7.0.1-2 · all · trixie
  Fixed · Fixed: 4.9-1
  dsa · mercurial · debian · 13

Observed: Oct 23, 2026, 5:44:37 PM UTC

References

[Debian Security Tracker] · [FIRST EPSS] · [OSV Package Vulnerability Database] · [SUSE security advisories and VEX]