How severe is CVE-2023-43499?

CVE-2023-43499 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-2023-43499 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-2023-43499?

CVE-2023-43499 affects Jenkins Build Failure Analyzer. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2023-43499?

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

When was CVE-2023-43499 published?

CVE-2023-43499 was published on 2023-09-20 and last updated on 2026-06-17.

CVE-2023-43499

CVE-2023-43499 is a medium-severity vulnerability in Jenkins Build Failure Analyzer 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 Build Failure Analyzer
Published: 2023-09-20
Last modified: 2026-06-17

Description

Jenkins Build Failure Analyzer Plugin 2.4.1 and earlier does not escape Failure Cause names in build logs, resulting in a stored cross-site scripting (XSS) vulnerability exploitable by attackers able to create or update Failure Causes.

Frequently asked questions

What is CVE-2023-43499?: Jenkins Build Failure Analyzer Plugin 2.4.1 and earlier does not escape Failure Cause names in build logs, resulting in a stored cross-site scripting (XSS) vulnerability exploitable by attackers able to create or update Failure Causes.
How severe is CVE-2023-43499?: CVE-2023-43499 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-2023-43499 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-2023-43499?: CVE-2023-43499 affects Jenkins Build Failure Analyzer. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2023-43499?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2023-43499 published?: CVE-2023-43499 was published on 2023-09-20 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:jenkins:build_failure_analyzer:*:*:*:*:*:jenkins:*:*

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