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Not in CISA KEV
MEDIUM severity

CVE-2018-1000176 — email-ext

MEDIUM

CVE-2018-1000176 is a medium-severity (CVSS 6.5) Information Exposure vulnerability in org.jenkins-ci.plugins:email-ext. A fix is available for org.jenkins-ci.plugins:email-ext — see the affected versions and patch details below.

Jenkins Email Extension Plugin showed plain text SMTP password in configuration form field

Also known asGHSA-gwxm-wqpq-w539
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%0.50%0.99%1.49%0.1%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:email-ext

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 exposure of sensitive information vulnerability exists in Jenkins Email Extension Plugin 2.61 and older in src/main/resources/hudson/plugins/emailext/ExtendedEmailPublisher/global.groovy and ExtendedEmailPublisherDescriptor.java that allows attackers with control of a Jenkins administrator's web browser (e.g. malicious extension) to retrieve the configured SMTP password.

Affected Packages

1 total 1 fixed
EcosystemPackageVulnerable rangeFix
☕Mavenorg.jenkins-ci.plugins:email-extall versions2.62org.jenkins-ci.plugins:email-ext:2.62

Affected Products

1 product · 1 configurations
Application
email extensionjenkins
≤ 2.61
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:email-ext, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.

  2. Fix

    Update org.jenkins-ci.plugins:email-ext to 2.62 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms CVE-2018-1000176 is resolved across your whole dependency graph.

  3. Workarounds

    Assume what was exposed is already known: rotate any credential, token or key that the affected component could return, restrict the endpoint to callers that genuinely need it, and strip sensitive fields from responses and error output at the boundary rather than relying on the client not to read them.

Frequently Asked Questions

An exposure of sensitive information vulnerability exists in Jenkins Email Extension Plugin 2.61 and older in src/main/resources/hudson/plugins/emailext/ExtendedEmailPublisher/global.groovy and ExtendedEmailPublisherDescriptor.java that allows attackers with control of a Jenkins administrator's web browser (e.g. malicious extension) to retrieve the configured SMTP password.
O3 Security · Impact-Aware SCA

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CVE-2018-1000176: email-ext — Fixed in 2.62