How severe is CVE-2023-40338?

CVE-2023-40338 has a CVSS score of 4.3/10, rated MEDIUM. Review your exposure and patch according to your risk tolerance.

Which packages are affected by CVE-2023-40338?

CVE-2023-40338 affects the following packages: org.jenkins-ci.plugins:cloudbees-folder (Maven). Ecosystems affected: Maven.

How do I fix CVE-2023-40338?

Update org.jenkins-ci.plugins:cloudbees-folder to 6.848.ve3b or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms CVE-2023-40338 is resolved across your whole dependency graph.

How do I detect CVE-2023-40338 in my Maven dependencies?

Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for org.jenkins-ci.plugins:cloudbees-folder, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.

How do I mitigate CVE-2023-40338 if there is no patch (or I can't update yet)?

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.

Is CVE-2023-40338 actively exploited in the wild?

No public exploit code has been indexed for CVE-2023-40338 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-2023-40338?

CVE-2023-40338 has an EPSS (Exploit Prediction Scoring System) score of 0.6%, placing it in the 51th 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-2023-40338?

CVE-2023-40338 is classified as CWE-532 (CWE-532). This weakness type describe the underlying flaw category, which helps determine the potential impact and the right class of mitigation.

When was CVE-2023-40338 published, and has it been updated?

CVE-2023-40338 was published on August 16, 2023 and was last updated on February 16, 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

MEDIUM severity

CVE-2023-40338 — cloudbees-folder

MEDIUM

CVE-2023-40338 is a medium-severity (CVSS 4.3) CWE-532 vulnerability in org.jenkins-ci.plugins:cloudbees-folder. A fix is available for org.jenkins-ci.plugins:cloudbees-folder — see the affected versions and patch details below.

Jenkins Folders Plugin information disclosure vulnerability

Published

Aug 16, 2023

Updated

Feb 16, 2024

Affected

1 pkg

Patched

1 / 1

Exploits

None indexed

Exploitation data as of Oct 27, 2026 · OSV.dev, NVD, FIRST.org (EPSS)

EPSS Exploitation Probability

via FIRST.org ↗

0.6%probability of exploitation in next 30 days

Lower Risk0.00%

Lower risk than most CVEs51th percentile — riskier than 51% of all scored CVEsHighest risk

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:cloudbees-folder

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

Jenkins Folders Plugin displays an error message when attempting to access the Scan Organization Folder Log if no logs are available.

In Folders Plugin 6.846.v23698686f0f6 and earlier, this error message includes the absolute path of a log file, exposing information about the Jenkins controller file system.

Folders Plugin 6.848.ve3b_fd7839a_81 does not display the absolute path of a log file in the error message.

Affected Packages

1 total 1 fixed

Ecosystem	Package	Vulnerable range	Fix
☕Maven	`org.jenkins-ci.plugins:cloudbees-folder`	all versions	6.848.ve3b`org.jenkins-ci.plugins:cloudbees-folder:6.848.ve3b`

Affected Products

1 product · 1 configurations

Application

foldersjenkins

≤ 6.846.v23698686f0f6

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.plugins:cloudbees-folder, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.
Fix
Update org.jenkins-ci.plugins:cloudbees-folder to 6.848.ve3b or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms CVE-2023-40338 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.

Red HatModerate

Product	Fixed in	Advisory
OCP-Tools-4.12-RHEL-8	`jenkins-2-plugins-0:4.12.1706515741-1.el8`	RHSA-2024:0778
OCP-Tools-4.14-RHEL-8	`jenkins-2-plugins-0:4.14.1706516441-1.el8`	RHSA-2024:0777

Frequently Asked Questions

Jenkins Folders Plugin displays an error message when attempting to access the Scan Organization Folder Log if no logs are available. In Folders Plugin 6.846.v23698686f0f6 and earlier, this error message includes the absolute path of a log file, exposing information about the Jenkins controller file system. Folders Plugin 6.848.ve3b_fd7839a_81 does not display the absolute path of a log file in the error message.

O3 Security · Impact-Aware SCA

Is CVE-2023-40338 in your dependencies?

Find it across Maven, including transitive dependencies.

Scan my dependencies How O3 SCA works

CVSS Score

4.3/10CVSS v3 base

Vector breakdown

Attack Vector

Network

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

Low

Integrity

None

Availability

None

Raw vector

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N

CWE Classification

CWE-532CWE-532

Weaponization

No Nuclei template, Metasploit module or public proof-of-concept found.

Timeline

Disclosed

Aug 16, 2023

Last updated

Feb 16, 2024

Identifiers

CVE-2023-40338

References

Advisorynvd.nist.gov · CVE 2023 40338 Webjenkins.io · 2023 08 16 Webopenwall.com

Related vulnerabilities

Also affects cloudbees-folder

This CVE is medium severity; 2 of 2 other CVEs affecting cloudbees-folder are rated as high or higher (top: high).

CVE-2023-40337CVE-2023-40336

Same weakness: CWE-532

This CVE is medium severity; 4 of 6 other CVEs with CWE-532 are rated as high or higher (top: moderate).

CVE-2026-115885CVE-2026-116691CVE-2026-113799CVE-2026-111762CVE-2026-107293CVE-2026-107291Browse all CWE-532

Provenance

Sources

OSV.devNVDFIRST.org (EPSS)

Last verifiedFeb 16, 2024

CVE-2023-40338 — cloudbees-folder

EPSS Exploitation Probability

How urgent is this, really

Where this sits among everything scored

Real-World Exposure

Description

Affected Packages

Affected Products

Detection & mitigation playbook

Detect

Fix

Workarounds

Fixing This On Your OS

Frequently Asked Questions

Is CVE-2023-40338 in your dependencies?