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MEDIUM severity

Incorrect Authorization in Jenkins Mercurial PluginGHSA-f9cx-789c-w2mr

MEDIUMFix: jenkinsci/mercurial-plugin@54b4f82

GHSA-f9cx-789c-w2mr is a medium-severity (CVSS 5.3) CWE-863 vulnerability in org.jenkins-ci.plugins:mercurial. A fix is available for org.jenkins-ci.plugins:mercurial — see the affected versions and patch details below.

Also known asCVE-2018-1000112
Published
Updated
Affected
1 pkg
Patched
1 / 1
Exploits
None indexed
Exploitation data as of Nov 4, 2026 · OSV.dev, NVD, FIRST.org (EPSS)

EPSS Exploitation Probability

via FIRST.org ↗
1.0%probability of exploitation in next 30 days
Lower Risk0.00%
Lower risk than most CVEs62th percentile — riskier than 62% of all scored CVEsHighest risk
0.00%0.49%0.97%1.46%0.1%0.1%1.0%1.0%1.0%May 26Sep 26Nov 26

Probability of exploitation in the next 30 days, from FIRST.org EPSS.

How urgent is this, really

Where this sits among everything scored

Real-World Exposure

1 pkg affected
☕org.jenkins-ci.plugins:mercurial

Real-time download stats are indexed for npm and PyPI packages. This vulnerability affects Maven packages — download data is not available via public APIs for these ecosystems.

Description

An improper authorization vulnerability exists in Jenkins Mercurial Plugin version 2.2 and earlier in MercurialStatus.java that allows an attacker with network access to obtain a list of nodes and users.

Affected Packages

1 total 1 fixed
EcosystemPackageVulnerable rangeFix
☕Mavenorg.jenkins-ci.plugins:mercurialall versions2.3org.jenkins-ci.plugins:mercurial:2.3

Affected Products

1 product · 1 configurations
Application
mercurialjenkins
≤ 2.2
range

Detection & mitigation playbook

Open-source dependency

  1. Detect

    Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for org.jenkins-ci.plugins:mercurial, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.

  2. Fix

    Update org.jenkins-ci.plugins:mercurial to 2.3 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms GHSA-f9cx-789c-w2mr is resolved across your whole dependency graph.

  3. Workarounds

    Put an independent control in front of the weakness: restrict the affected endpoint or interface to trusted networks, require an additional authentication factor or proxy-level check, and invalidate existing sessions and credentials in case the flaw has already been used.

Frequently Asked Questions

An improper authorization vulnerability exists in Jenkins Mercurial Plugin version 2.2 and earlier in MercurialStatus.java that allows an attacker with network access to obtain a list of nodes and users.
O3 Security · Impact-Aware SCA

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Incorrect Authorization in Jenkins Mercurial Plugin