How severe is CVE-2023-40342?

CVE-2023-40342 has a CVSS 3.x base score of 5.4, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.

Is CVE-2023-40342 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (40th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2023-40342?

CVE-2023-40342 affects Jenkins Flaky Test Handler. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2023-40342?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2023-40342 published?

CVE-2023-40342 was published on 2023-08-16 and last updated on 2026-06-17.

CVE-2023-40342

CVE-2023-40342 is a medium-severity vulnerability in Jenkins Flaky Test Handler with a CVSS 3.x base score of 5.4. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-79.

Key facts

Severity: Medium (CVSS 3.x base score 5.4)
EPSS exploit prediction: 1% (40th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-79
Affected product: Jenkins Flaky Test Handler
Published: 2023-08-16
Last modified: 2026-06-17

Description

Jenkins Flaky Test Handler Plugin 1.2.2 and earlier does not escape JUnit test contents when showing them on the Jenkins UI, resulting in a stored cross-site scripting (XSS) vulnerability exploitable by attackers able to control JUnit report file contents.

Frequently asked questions

What is CVE-2023-40342?: Jenkins Flaky Test Handler Plugin 1.2.2 and earlier does not escape JUnit test contents when showing them on the Jenkins UI, resulting in a stored cross-site scripting (XSS) vulnerability exploitable by attackers able to control JUnit report file contents.
How severe is CVE-2023-40342?: CVE-2023-40342 has a CVSS 3.x base score of 5.4, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.
Is CVE-2023-40342 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (40th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2023-40342?: CVE-2023-40342 affects Jenkins Flaky Test Handler. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2023-40342?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2023-40342 published?: CVE-2023-40342 was published on 2023-08-16 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:jenkins:flaky_test_handler:*:*:*:*:*:jenkins:*:*

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