How severe is CVE-2014-2066?

No CVSS score has been assigned to CVE-2014-2066 yet. Review the advisory details and affected package list to assess your exposure.

Which packages are affected by CVE-2014-2066?

CVE-2014-2066 affects the following packages: org.jenkins-ci.main:jenkins-core (Maven), org.jenkins-ci.main:jenkins-core (Maven). Ecosystems affected: Maven.

How do I fix CVE-2014-2066?

Update org.jenkins-ci.main:jenkins-core to 1.551 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms CVE-2014-2066 is resolved across your whole dependency graph.

How do I detect CVE-2014-2066 in my Maven dependencies?

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.

How do I mitigate CVE-2014-2066 if there is no patch (or I can't update yet)?

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.

Is CVE-2014-2066 actively exploited in the wild?

No public exploit code has been indexed for CVE-2014-2066 yet. This does not mean the vulnerability cannot be exploited — absence of public exploits does not imply safety. Apply the recommended fix and use O3 Security to monitor your exposure.

What is the EPSS score for CVE-2014-2066?

CVE-2014-2066 has an EPSS (Exploit Prediction Scoring System) score of 2.1%, placing it in the 81th percentile of all CVEs. EPSS is maintained by FIRST.org and estimates the probability that a vulnerability will be exploited in the wild within the next 30 days. This score indicates relatively lower exploitation probability, though the CVSS severity should still guide your patching priority.

What type of vulnerability is CVE-2014-2066?

CVE-2014-2066 is classified as Improper Authentication (CWE-287). This weakness type describe the underlying flaw category, which helps determine the potential impact and the right class of mitigation.

When was CVE-2014-2066 published, and has it been updated?

CVE-2014-2066 was published on May 17, 2022 and was last updated on December 3, 2024. Advisory data evolves as severity scores, affected ranges, and exploit intelligence are revised — always check the latest version of the advisory before acting.

☕ Maven

Not in CISA KEV

CVE-2014-2066 — jenkins-core

Fix: jenkinsci/jenkins@8ac74c3

CVE-2014-2066 is a Improper Authentication 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.

Jenkins session fixation vulnerability

Published

May 17, 2022

Updated

Dec 3, 2024

Affected

2 pkgs

Patched

2 / 2

Exploits

None indexed

Exploitation data as of Nov 5, 2026 · OSV.dev, NVD, FIRST.org (EPSS)

EPSS Exploitation Probability

via FIRST.org ↗

2.1%probability of exploitation in next 30 days

Lower Risk0.00%

Lower risk than most CVEs81th percentile — riskier than 81% of all scored CVEsHighest risk

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

Real-World Exposure

2 pkgs affected

☕org.jenkins-ci.main:jenkins-core☕org.jenkins-ci.main:jenkins-core

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

Session fixation vulnerability in Jenkins before 1.551 and LTS before 1.532.2 allows remote attackers to hijack web sessions via vectors involving the "override" of Jenkins cookies.

Affected Packages

2 total 2 fixed

Ecosystem	Package	Vulnerable range	Fix
☕Maven	`org.jenkins-ci.main:jenkins-core`	≥ 1.533&&< 1.551	1.551`org.jenkins-ci.main:jenkins-core:1.551`
☕Maven	`org.jenkins-ci.main:jenkins-core`	all versions	1.532.2`org.jenkins-ci.main:jenkins-core:1.532.2`

Affected Products

1 product · 2 configurations

Application

jenkinsjenkins

≤ 1.550

range

Detection & mitigation playbook

Open-source dependency

Detect
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 1.551 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms CVE-2014-2066 is resolved across your whole dependency graph.
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.

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.

Red HatModerate

Product	Fixed in	Advisory
Red Hat OpenShift Enterprise 2.1	`jenkins-0:1.565.3-1.el6op`	RHBA-2014:1630

Frequently Asked Questions

Session fixation vulnerability in Jenkins before 1.551 and LTS before 1.532.2 allows remote attackers to hijack web sessions via vectors involving the "override" of Jenkins cookies.