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MEDIUM severity

CVE-2018-1000421 — mesos

MEDIUM

CVE-2018-1000421 is a medium-severity (CVSS 6.5) Server-Side Request Forgery (SSRF) vulnerability in org.jenkins-ci.plugins:mesos. A fix is available for org.jenkins-ci.plugins:mesos — see the affected versions and patch details below.

Server-side request forgery vulnerability in Jenkins Mesos Plugin

Also known asGHSA-5q7j-8hpc-4848
Published
Updated
Affected
1 pkg
Patched
1 / 1
Exploits
None indexed
Exploitation data as of Nov 5, 2026 · OSV.dev, NVD, FIRST.org (EPSS)

EPSS Exploitation Probability

via FIRST.org ↗
1.3%probability of exploitation in next 30 days
Lower Risk0.00%
Lower risk than most CVEs70th percentile — riskier than 70% of all scored CVEsHighest risk
0.00%0.60%1.20%1.79%0.3%1.3%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:mesos

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 Mesos Plugin 0.17.1 and earlier in MesosCloud.java that allows attackers with Overall/Read access to initiate a test connection to an attacker-specified Mesos server with attacker-specified credentials IDs obtained through another method, capturing credentials stored in Jenkins.

Affected Packages

1 total 1 fixed
EcosystemPackageVulnerable rangeFix
☕Mavenorg.jenkins-ci.plugins:mesosall versions0.18org.jenkins-ci.plugins:mesos:0.18

Affected Products

1 product · 1 configurations
Application
mesosapache
≤ 0.17.1
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:mesos, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.

  2. Fix

    Update org.jenkins-ci.plugins:mesos to 0.18 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms CVE-2018-1000421 is resolved across your whole dependency graph.

  3. Workarounds

    Restrict outbound requests from the affected component to an allowlist of hosts, block access to link-local and internal address ranges at the network layer, and require authentication on internal services so a forged request cannot reach them unauthenticated.

Frequently Asked Questions

An improper authorization vulnerability exists in Jenkins Mesos Plugin 0.17.1 and earlier in MesosCloud.java that allows attackers with Overall/Read access to initiate a test connection to an attacker-specified Mesos server with attacker-specified credentials IDs obtained through another method, capturing credentials stored in Jenkins.
O3 Security · Impact-Aware SCA

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CVE-2018-1000421: mesos — Fixed in 0.18