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Vulnerabilities

Vulnerability · CVE-2020-2096

Jenkins gitlab_hook Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

Published Jun 7, 2025 · catalog updated Jun 7, 2025 · Jenkins

Patch now

CVE-2020-2096 is in the CISA known-exploited catalog. Confirm Jenkins against the vendor advisory and apply that fix. The CVSS score does not change the priority.

Severity
Unknown—
Known exploitation
CISA KEV and VulnCheck KEV
EPSS
92.79%
Remediation
Remediation guidance
Affected products
stated gitlab_hook · vendor Jenkins gitlab_hook

Jenkins Gitlab Hook Plugin 1.4.2 and earlier does not escape project names in the build_now endpoint, resulting in a reflected XSS vulnerability.

Are you affected?

Enter the version you run. The result uses only the ranges stored on this record.

The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.

  • stated gitlab_hook<= 1.4.2
  • vendor Jenkins gitlab_hookversion unspecified

How to fix CVE-2020-2096

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

CVE-2020-2096 is in the CISA known-exploited catalog. Confirm Jenkins against the vendor advisory and apply that fix. The CVSS score does not change the priority.

Which versions are affected?

Compare what you have installed with <= 1.4.2. Apply remediations or mitigations per vendor instructions or discontinue use of the product if remediation or mitigations are unavailable.

What should an analyst verify?

No weakness class is stored. EPSS 92.79%. The CISA KEV listing is the exploitation evidence. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.

Code

The project this record applies to. Exploit listings stay in References.

No public source repository is identified for this product.

Timeline

Detection, updates, and resolution for this record.

  1. Jun 7, 2025 · VulnCheck KEV

    Detected

    Jenkins Gitlab Hook Plugin 1.4.2 and earlier does not escape project names in the build_now endpoint, resulting in a reflected XSS vulnerability.

  2. Jun 7, 2025 · CISA KEV

    Known exploited

    Apply remediations or mitigations per vendor instructions or discontinue use of the product if remediation or mitigations are unavailable.

Sources

  • CVE.orgVulnerability recordCVE-2020-2096

    Official CVE identifier

    cve.org
  • FIRST EPSSExploitation probabilityCVE-2020-2096

    30-day exploitation probability 92.8%

    first.org
  • VulnCheck KEVConfirmed exploitationCVE-2020-2096

    Jenkins Gitlab Hook Plugin 1.4.2 and earlier does not escape project names in the build_now endpoint, resulting in a reflected XSS vulnerability.

    vulncheck.com

References

Freshness

Last verified in this catalog Oct 18, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.