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CVE-2018-1000132

Mercurial Incorrect Access Control vulnerability

9.1 CriticalFix available

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.

Attack profile

How easy it is to exploit

Attack vector
Network
Complexity
Low
Privileges needed
None
User interaction
None

What an attacker can affect

Confidentiality
High
Integrity
High
Availability
None

Exploit likelihood

2.67%Up 1.4 points since Apr 14, 2021
90%50%10%1%

What each source reports

NVD Score used 9.1

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.

Record
CVE-2018-1000132
CVSS 3.0
9.1 CriticalCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
CVSS 2.0
6.4 MediumAV:N/AC:L/Au:N/C:P/I:P/A:N
Weakness
CWE-732
Updated
2026-11-02
CVE List No score

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.

Record
CVE-2018-1000132
Updated
2026-11-02
EUVDEUVD-2018-0094 No score

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.

Record
EUVD-2018-0094
Updated
2026-11-03
GitHub AdvisoriesGHSA-4mr4-7vjv-9hm6 9.3

Mercurial Incorrect Access Control vulnerability

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.

Record
GHSA-4mr4-7vjv-9hm6
CVSS 4.0
9.3 CriticalCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N
CVSS 3.0
9.1 CriticalCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
Weakness
CWE-732
Updated
2026-11-02
OSVALPINE-CVE-2018-1000132 9.1

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.

Record
ALPINE-CVE-2018-1000132
CVSS 3.0
9.1 CriticalCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
Updated
2026-11-02
OSV 9.1

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.

Record
CVE-2018-1000132
CVSS 3.0
9.1 CriticalCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
Updated
2026-11-02
Show 8 moreShow less
OSVDEBIAN-CVE-2018-1000132 9.1

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.

Record
DEBIAN-CVE-2018-1000132
CVSS 3.0
9.1 CriticalCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
Updated
2026-11-02
OSVGHSA-4mr4-7vjv-9hm6 9.3

Mercurial Incorrect Access Control vulnerability

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.

Record
GHSA-4mr4-7vjv-9hm6
CVSS 4.0
9.3 CriticalCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N
CVSS 3.0
9.1 CriticalCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
Weakness
CWE-732
Updated
2026-11-02
OSVRHSA-2019:2276 7.5

Red Hat Security Advisory: mercurial security update

Record
RHSA-2019:2276
CVSS 3.0
7.5 HighCVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H
Updated
2026-11-02
OSVUBUNTU-CVE-2018-1000132 9.1

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.

Record
UBUNTU-CVE-2018-1000132
CVSS 3.0
9.1 CriticalCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
Updated
2026-11-02
OSVMGASA-2018-0355 No score

Updated mercurial packages fix security vulnerabilities

This update provides mercurial version 4.6.2 and fixes the following security issues:

Fix the mpatch_apply function in mpatch.c that incorrectly proceeds in cases where the fragment start is past the end of the original data (CVE-2018-13346).

Fix mpatch.c that mishandles integer addition and subtraction (CVE-2018-13347).

Fix the mpatch_decode function in mpatch.c that mishandles certain situations where there should be at least 12 bytes remaining after the current position in the patch data (CVE-2018-13348).

Remote attackers may bypass HTTP server permissions via batch wire protocol commands(CVE-2018-1000132).

Record
MGASA-2018-0355
Updated
2026-11-02
OSVopenSUSE-SU-2024:10586-1 No score

mercurial-5.9.1-2.1 on GA media

These are all security issues fixed in the mercurial-5.9.1-2.1 package on the GA media of openSUSE Tumbleweed.

Record
openSUSE-SU-2024:10586-1
Updated
2026-11-02
OSVPYSEC-2018-87 No score

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.

Record
PYSEC-2018-87
Updated
2026-11-02
OSVSUSE-SU-2018:0933-1 No score

Security update for mercurial

This update for mercurial fixes the following issues:

  • Fix HTTP server permissions bypass (CVE-2018-1000132, bsc#1085211):
Record
SUSE-SU-2018:0933-1
Updated
2026-11-02

Affected products

Affected packages

Affected packages
PackageAffectedFixed
mercurial
PyPI
 before 4.5.1
4.5.1
mercurial
Alpine:v3.5
 before 4.5.2-r0
4.5.2-r0
mercurial
Alpine:v3.6
 before 4.5.2-r0
4.5.2-r0
mercurial
Alpine:v3.7
 before 4.5.2-r0
4.5.2-r0
mercurial
Debian:12
 before 4.5.2-1
4.5.2-1
mercurial
Debian:13
 before 4.5.2-1
4.5.2-1
mercurial
Debian:14
 before 4.5.2-1
4.5.2-1
mercurial
Debian:7
 before 2.2.2-4+deb7u7, plus listed versions
2.2.2-32.2.2-42.2.2-4+deb7u12.2.2-4+deb7u22.2.2-4+deb7u32.2.2-4+deb7u42.2.2-4+deb7u52.2.2-4+deb7u6
2.2.2-4+deb7u7
mercurial
Debian:8
From an advisory covering 6 CVEs
 before 3.1.2-2+deb8u5, plus listed versions
3.1.2-23.1.2-2+deb8u13.1.2-2+deb8u23.1.2-2+deb8u33.1.2-2+deb8u4
3.1.2-2+deb8u5
mercurial
Debian:9
From an advisory covering 6 CVEs
 before 4.0-1+deb9u2, plus listed versions
4.0-14.0-1+deb9u1
4.0-1+deb9u2
Show 27 moreShow less
Affected packages
PackageAffectedFixed
mercurial
PyPI
 before 4.5.1, plus listed versions
0.8.10.90.9.10.9.20.9.3
Show 45 moreShow less
0.9.40.9.51.01.0.11.0.21.11.1.11.1.21.21.2.11.31.3.11.41.4.11.4.21.4.31.51.5.11.5.21.5.31.5.41.61.6.11.6.21.6.31.6.41.71.7.11.7.21.7.31.7.51.81.8.11.8.21.8.31.8.41.91.9.11.9.21.9.32.02.0.12.0.22.12.1.1
4.5.1
mercurial
Mageia:5
From an advisory covering 4 CVEs
 before 4.6.2-1.mga5
4.6.2-1.mga5
mercurial
Mageia:6
From an advisory covering 4 CVEs
 before 4.6.2-1.mga6
4.6.2-1.mga6
emacs-mercurial
Red Hat:enterprise_linux:7::client
From an advisory covering 3 CVEs
 before 0:2.6.2-10.el7
0:2.6.2-10.el7
emacs-mercurial-el
Red Hat:enterprise_linux:7::client
From an advisory covering 3 CVEs
 before 0:2.6.2-10.el7
0:2.6.2-10.el7
mercurial
Red Hat:enterprise_linux:7::client
From an advisory covering 3 CVEs
 before 0:2.6.2-10.el7
0:2.6.2-10.el7
mercurial-debuginfo
Red Hat:enterprise_linux:7::client
From an advisory covering 3 CVEs
 before 0:2.6.2-10.el7
0:2.6.2-10.el7
mercurial-hgk
Red Hat:enterprise_linux:7::client
From an advisory covering 3 CVEs
 before 0:2.6.2-10.el7
0:2.6.2-10.el7
emacs-mercurial
Red Hat:enterprise_linux:7::computenode
From an advisory covering 3 CVEs
 before 0:2.6.2-10.el7
0:2.6.2-10.el7
emacs-mercurial-el
Red Hat:enterprise_linux:7::computenode
From an advisory covering 3 CVEs
 before 0:2.6.2-10.el7
0:2.6.2-10.el7
mercurial
Red Hat:enterprise_linux:7::computenode
From an advisory covering 3 CVEs
 before 0:2.6.2-10.el7
0:2.6.2-10.el7
mercurial-debuginfo
Red Hat:enterprise_linux:7::computenode
From an advisory covering 3 CVEs
 before 0:2.6.2-10.el7
0:2.6.2-10.el7
mercurial-hgk
Red Hat:enterprise_linux:7::computenode
From an advisory covering 3 CVEs
 before 0:2.6.2-10.el7
0:2.6.2-10.el7
mercurial
Red Hat:enterprise_linux:7::server
From an advisory covering 3 CVEs
 before 0:2.6.2-10.el7
0:2.6.2-10.el7
mercurial-debuginfo
Red Hat:enterprise_linux:7::server
From an advisory covering 3 CVEs
 before 0:2.6.2-10.el7
0:2.6.2-10.el7
emacs-mercurial
Red Hat:enterprise_linux:7::server
From an advisory covering 3 CVEs
 before 0:2.6.2-10.el7
0:2.6.2-10.el7
emacs-mercurial-el
Red Hat:enterprise_linux:7::server
From an advisory covering 3 CVEs
 before 0:2.6.2-10.el7
0:2.6.2-10.el7
mercurial-hgk
Red Hat:enterprise_linux:7::server
From an advisory covering 3 CVEs
 before 0:2.6.2-10.el7
0:2.6.2-10.el7
mercurial
Red Hat:enterprise_linux:7::workstation
From an advisory covering 3 CVEs
 before 0:2.6.2-10.el7
0:2.6.2-10.el7
mercurial-debuginfo
Red Hat:enterprise_linux:7::workstation
From an advisory covering 3 CVEs
 before 0:2.6.2-10.el7
0:2.6.2-10.el7
emacs-mercurial
Red Hat:enterprise_linux:7::workstation
From an advisory covering 3 CVEs
 before 0:2.6.2-10.el7
0:2.6.2-10.el7
emacs-mercurial-el
Red Hat:enterprise_linux:7::workstation
From an advisory covering 3 CVEs
 before 0:2.6.2-10.el7
0:2.6.2-10.el7
mercurial-hgk
Red Hat:enterprise_linux:7::workstation
From an advisory covering 3 CVEs
 before 0:2.6.2-10.el7
0:2.6.2-10.el7
mercurial
SUSE:Linux Enterprise Software Development Kit 12 SP3
 before 2.8.2-15.10.1
2.8.2-15.10.1
mercurial
Ubuntu:14.04:LTS
 before 2.8.2-1ubuntu1.4, plus listed versions
2.6.3-12.7.2-12.8.1-22.8.2-1ubuntu12.8.2-1ubuntu1.3
2.8.2-1ubuntu1.4
mercurial
Ubuntu:16.04:LTS
 before 3.7.3-1ubuntu1.1, plus listed versions
3.4-1ubuntu23.6.2-1ubuntu23.7.3-1ubuntu1
3.7.3-1ubuntu1.1
mercurial
openSUSE:Tumbleweed
From an advisory covering 9 CVEs
 before 5.9.1-2.1
5.9.1-2.1

History

History
RecordedChangedSources
affected, facts
aliasesEUVD
first indexedCVE List, GitHub Advisories, NVD, OSV

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2018-1000132 is a critical vulnerability (CVSS 9.1) in Mercurial, published March 14, 2018. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 2.67%, the 85th percentile. Fixed in mercurial 4.5.1.

References

Show 35 moreShow less
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Left out here: 91 versions. The JSON record has them.

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