CVE-2023-27904 is a medium-severity (CVSS 5.3) vulnerability in org.jenkins-ci.main:jenkins-core. A fix is available for org.jenkins-ci.main:jenkins-core — see the affected versions and patch details below.
Information disclosure through error stack traces related to agents
Exploitation Status
No confirmed exploitation observed yet
- CISA’s own triage has not observed active exploitation or public proof-of-concept code for this CVE as of its last assessment.
Exploitation and automatability from CISA’s SSVC triage for CVE-2023-27904.
EPSS Exploitation Probability
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
org.jenkins-ci.main:jenkins-core☕org.jenkins-ci.main:jenkins-core☕org.jenkins-ci.main:jenkins-coreReal-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
Jenkins 2.393 and earlier, LTS 2.375.3 and earlier, and prior to LTS 2.387.1 prints an error stack trace on agent-related pages when agent connections are broken, potentially revealing information about Jenkins configuration that is otherwise inaccessible to attackers.
Jenkins 2.394, LTS 2.375.4, and LTS 2.387.1 does not display error stack traces when agent connections are broken.
Affected Packages
| Ecosystem | Package | Vulnerable range | Fix |
|---|---|---|---|
| ☕Maven | org.jenkins-ci.main:jenkins-core | ≥ 2.376&&< 2.387.1 | 2.387.1org.jenkins-ci.main:jenkins-core:2.387.1 |
| ☕Maven | org.jenkins-ci.main:jenkins-core | all versions | 2.375.4org.jenkins-ci.main:jenkins-core:2.375.4 |
| ☕Maven | org.jenkins-ci.main:jenkins-core | ≥ 2.388&&< 2.394 | 2.394org.jenkins-ci.main:jenkins-core:2.394 |
Affected Products
jenkinsjenkinsDetection & mitigation playbook
Open-source dependencyDetect
Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for org.jenkins-ci.main:jenkins-core, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.
Fix
Update org.jenkins-ci.main:jenkins-core to 2.387.1 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms CVE-2023-27904 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.
Fixing This On Your OS
If you run this on a Linux distribution, patch through your package manager against the distro's own security advisory below — it tracks the exact backported fix for your release, which can ship on a different timeline (and sometimes a different severity) than the upstream project.
OpenShift 3.11 is already in the ELS support model phase. The Jenkins components are out of the scope of the ELS support; hence OpenShift 3.11 Jenkins component is marked in this CVE as Out of Support Scope.
| Product | Fixed in | Advisory |
|---|---|---|
| OCP-Tools-4.12-RHEL-8 | jenkins-0:2.387.1.1683009767-3.el8 | RHSA-2023:3195 |
| OCP-Tools-4.12-RHEL-8 | jenkins-0:2.414.3.1698293911-3.el8 | RHSA-2023:6172 |
| OCP-Tools-4.12-RHEL-8 | jenkins-0:2.426.3.1706515686-3.el8 | RHSA-2024:0778 |
| OCP-Tools-4.13-RHEL-8 | jenkins-0:2.387.3.1684911776-3.el8 | RHSA-2023:3299 |
| OCP-Tools-4.13-RHEL-8 | jenkins-0:2.401.1.1686680404-3.el8 | RHSA-2023:3622 |
| OpenShift Developer Tools and Services for OCP 4.11 | jenkins-0:2.387.1.1683009763-3.el8 | RHSA-2023:3198 |
| OpenShift Developer Tools and Services for OCP 4.11 | jenkins-0:2.401.1.1686831596-3.el8 | RHSA-2023:3663 |
| OpenShift Developer Tools and Services for OCP 4.11 | jenkins-0:2.414.3.1698298955-3.el8 | RHSA-2023:6171 |
Frequently Asked Questions
Is CVE-2023-27904 in your dependencies?
Find it across Maven, including transitive dependencies.