GHSA-5c4v-vh95-c67c is a low-severity (CVSS 3.7) 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 SMTP password transmitted and displayed in plain text
EPSS Exploitation Probability
EPSS (Exploit Prediction Scoring System) is a daily probability model maintained by FIRST.org. It estimates the likelihood a CVE will be exploited in production environments within the next 30 days, derived from real-world threat intelligence signals.
How urgent is this, really
GHSA-5c4v-vh95-c67c plotted by exploitation likelihood (EPSS) against impact (CVSS). The shaded corner — EPSS 50%+ and CVSS 7.0+ — is where this CVE doesn't sit, though severity or exploitability alone can still warrant action.
Where this sits among everything scored
Of 379,145 CVEs with a current EPSS score, this one falls in the < 10% band (highlighted). Real counts from FIRST.org, not a sample — log-scaled since the landscape is heavily right-skewed.
Real-World Exposure
org.jenkins-ci.plugins:email-extReal-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
Email Extension Plugin stores an SMTP password in its global configuration file hudson.plugins.emailext.ExtendedEmailPublisher.xml on the Jenkins controller as part of its configuration.
While this password is stored encrypted on disk, it is transmitted and displayed in plain text as part of the configuration form by Email Extension Plugin 2.72 and 2.73. This can result in exposure of the password.
Email Extension Plugin 2.74 transmits the SMTP password in its global configuration encrypted and masks it using a password field.
Affected Packages
| Ecosystem | Package | Vulnerable range | Fix |
|---|---|---|---|
| ☕Maven | org.jenkins-ci.plugins:email-ext | ≥ 2.72&&< 2.74 | 2.74org.jenkins-ci.plugins:email-ext:2.74 |
Detection & mitigation playbook
Open-source dependencyDetect
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.
Fix
Update org.jenkins-ci.plugins:email-ext to 2.74 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms GHSA-5c4v-vh95-c67c is resolved across your whole dependency graph.
Workarounds
If you can't upgrade right away: gate or disable the affected feature, validate untrusted input at the boundary, and avoid passing attacker-controlled data into the vulnerable path. O3's runtime protection blocks exploitation in production as an interim safeguard until the upgrade lands.
How O3 protects you
O3 Security's impact-aware SCA analyses which vulnerable code paths your application actually calls, so a match like GHSA-5c4v-vh95-c67c can be triaged on real exposure rather than presence alone.
Tailored to GHSA-5c4v-vh95-c67c. Runtime protection reduces exposure until a permanent patch is applied and verified — it complements patching, it doesn't replace it.
Frequently Asked Questions
Is GHSA-5c4v-vh95-c67c in your dependencies?
O3 Security finds GHSA-5c4v-vh95-c67c across Maven dependencies, including transitive ones, and its impact-aware SCA ranks findings by whether your code actually calls the vulnerable path.