How severe is CVE-2023-40340?

CVE-2023-40340 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.

Is CVE-2023-40340 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (41st percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2023-40340?

CVE-2023-40340 affects Jenkins Nodejs. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2023-40340?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2023-40340 published?

CVE-2023-40340 was published on 2023-08-16 and last updated on 2026-06-17.

CVE-2023-40340

CVE-2023-40340 is a high-severity vulnerability in Jenkins Nodejs with a CVSS 3.x base score of 7.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low.

Key facts

Severity: High (CVSS 3.x base score 7.5)
EPSS exploit prediction: 1% (41st percentile)
Actively exploited: Not listed in CISA KEV
Affected product: Jenkins Nodejs
Published: 2023-08-16
Last modified: 2026-06-17

Description

Jenkins NodeJS Plugin 1.6.0 and earlier does not properly mask (i.e., replace with asterisks) credentials specified in the Npm config file in Pipeline build logs.

Frequently asked questions

What is CVE-2023-40340?: Jenkins NodeJS Plugin 1.6.0 and earlier does not properly mask (i.e., replace with asterisks) credentials specified in the Npm config file in Pipeline build logs.
How severe is CVE-2023-40340?: CVE-2023-40340 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.
Is CVE-2023-40340 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (41st percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2023-40340?: CVE-2023-40340 affects Jenkins Nodejs. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2023-40340?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2023-40340 published?: CVE-2023-40340 was published on 2023-08-16 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:jenkins:nodejs:*:*:*:*:*:jenkins:*:*