How severe is CVE-2024-23903?

CVE-2024-23903 has a CVSS 3.x base score of 5.3, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is low, integrity none, and availability none.

Is CVE-2024-23903 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (39th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2024-23903?

CVE-2024-23903 affects Jenkins Github Branch Source. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2024-23903?

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

Does CVE-2024-23903 have an EU (EUVD) identifier?

Yes. CVE-2024-23903 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2024-0341.

When was CVE-2024-23903 published?

CVE-2024-23903 was published on 2024-01-24 and last updated on 2026-06-17.

CVE-2024-23903

CVE-2024-23903 is a medium-severity vulnerability in Jenkins Github Branch Source with a CVSS 3.x base score of 5.3. 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-697.

Key facts

Severity: Medium (CVSS 3.x base score 5.3)
EPSS exploit prediction: 0% (39th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2024-0341
Weakness: CWE-697
Affected product: Jenkins Github Branch Source
Published: 2024-01-24
Last modified: 2026-06-17

Description

Jenkins GitLab Branch Source Plugin 684.vea_fa_7c1e2fe3 and earlier uses a non-constant time comparison function when checking whether the provided and expected webhook token are equal, potentially allowing attackers to use statistical methods to obtain a valid webhook token.

Frequently asked questions

What is CVE-2024-23903?: Jenkins GitLab Branch Source Plugin 684.vea_fa_7c1e2fe3 and earlier uses a non-constant time comparison function when checking whether the provided and expected webhook token are equal, potentially allowing attackers to use statistical methods to obtain a valid webhook token.
How severe is CVE-2024-23903?: CVE-2024-23903 has a CVSS 3.x base score of 5.3, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is low, integrity none, and availability none.
Is CVE-2024-23903 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (39th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2024-23903?: CVE-2024-23903 affects Jenkins Github Branch Source. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2024-23903?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2024-23903 have an EU (EUVD) identifier?: Yes. CVE-2024-23903 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2024-0341.
When was CVE-2024-23903 published?: CVE-2024-23903 was published on 2024-01-24 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:jenkins:github_branch_source:*:*:*:*:*:jenkins:*:*

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