CVE-2020-2096
MediumExploitedPublic exploitReflected XSS vulnerability in Jenkins gitlab-hook Plugin
Published May 24, 2022 · Updated Jul 8, 2026 · Also known as GHSA-8696-836p-c8qp
Key Facts
Patch immediately- CVE-2020-2096 is a medium-severity vulnerability (CVSS 6.1 v3.1) affecting Gitlab Hook (Jenkins), org.jenkins-ci.ruby-plugins:gitlab-hook (maven), Jenkins Gitlab Hook Plugin.
- It is exploited in the wild, listed in Industry KEV feed since Jun 7, 2025. Public exploit code is available.
- EPSS estimates a 93% probability of exploitation in the next 30 days.
- Fixed versions are available, including Gitlab Hook <=1.4.2, Gitlab Hook 1.4.2.
- Brandefense priority: patch immediately, because it is listed as exploited in the wild.
CVSS v3.1
6.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
EPSS (30-day exploit likelihood)
93%
Higher than 99.8% of all scored CVEs
Exploited in the wild
Yes
1 catalog listing
Public exploit code
Available
Proof-of-concept or weaponized module
Get the full CVE-2020-2096 brief as a PDF
Every affected product and fixed release, exploitation status and a first 24 hours response checklist, emailed within minutes.
Description
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.
Known-Exploited Catalog Listings
| Catalog | Added | Remediation due | Ransomware use |
|---|---|---|---|
| Industry KEV feed | Jun 7, 2025 | n/a | Not reported |
Required action: Apply remediations or mitigations per vendor instructions or discontinue use of the product if remediation or mitigations are unavailable.
Affected Products
3 affected entries in total| Product | Affected versions | Fixed in |
|---|---|---|
| Gitlab HookJenkins | See advisory | 1.4.2 |
| org.jenkins-ci.ruby-plugins:gitlab-hookmaven | See advisory | n/a |
| Jenkins Gitlab Hook Plugin | >= unspecified | n/a |
Patched Releases
Gitlab Hook
<=1.4.2
Timeline
Publicly disclosed
May 24, 2022
Added to Industry KEV feed
Jun 7, 2025
Last updated
Jul 8, 2026
Weakness Type
- CWE-79 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
References
- advisoryGHSA advisory
- advisoryhttps://jenkins.io/security/advisory/2020-01-15/#SECURITY-1683
- advisoryhttps://nvd.nist.gov/vuln/detail/CVE-2020-2096
- advisory[oss-security] 20200115 Multiple vulnerabilities in Jenkins plugins
- exploithttp://packetstormsecurity.com/files/155967/Jenkins-Gitlab-Hook-1.4.2-Cross-Site-Scripting.html
FAQ
Common Questions.
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.
Affected: Gitlab Hook (Jenkins); org.jenkins-ci.ruby-plugins:gitlab-hook (maven); Jenkins Gitlab Hook Plugin versions >= unspecified. The full list is in the CVE brief.
It is exploited in the wild, listed in Industry KEV feed since Jun 7, 2025.
No, it is not currently listed in the CISA Known Exploited Vulnerabilities catalog.
Public exploit code is available.
Fixed versions are available, including Gitlab Hook <=1.4.2, Gitlab Hook 1.4.2.
Brandefense priority: patch immediately, because it is listed as exploited in the wild.
Is CVE-2020-2096 Running On Your Attack Surface?
Brandefense maps vulnerabilities like this one to your internet-facing assets and tells you exactly where to patch.
Request A Demo