How severe is CVE-2020-2096?

CVE-2020-2096 has a CVSS score of 6.1/10, rated MEDIUM. Review your exposure and patch according to your risk tolerance.

Which packages are affected by CVE-2020-2096?

CVE-2020-2096 affects the following packages: org.jenkins-ci.ruby-plugins:gitlab-hook (Maven). Ecosystems affected: Maven.

How do I fix CVE-2020-2096?

No fixed version has been published for CVE-2020-2096 yet. Monitor the advisory for updates, apply mitigations recommended by the vendor, and use O3 Security to track when a fix becomes available in your stack.

Is CVE-2020-2096 actively exploited in the wild?

Yes. There are 4 known exploit references for CVE-2020-2096, including 1 documented proof-of-concept exploit on Exploit-DB and 2 in-the-wild exploitations observed on GitHub and other sources. Treat this as actively exploitable and prioritize patching immediately. All exploit code should only be run in an isolated sandbox environment for research or authorized testing — never against production systems without explicit written authorization.

What is the EPSS score for CVE-2020-2096?

CVE-2020-2096 has an EPSS (Exploit Prediction Scoring System) score of 92.7%, placing it in the 100th percentile of all CVEs. EPSS is maintained by FIRST.org and estimates the probability that a vulnerability will be exploited in the wild within the next 30 days. A score above 50% indicates significantly elevated exploitation risk — immediate patching is strongly recommended.

Is there exploit tooling available for CVE-2020-2096?

A Nuclei detection template exists for CVE-2020-2096, meaning automated scanners can fingerprint it. Public exploit tooling significantly increases real-world risk — prioritize patching and ensure detection coverage. Exploit tooling should only ever be used in isolated, authorized testing environments.

When was CVE-2020-2096 published, and has it been updated?

CVE-2020-2096 was published on January 15, 2020 and was last updated on April 10, 2026. Advisory data evolves as severity scores, affected ranges, and exploit intelligence are revised — always check the latest version of the advisory before acting.

☕ Maven

CVE-2020-2096

MEDIUM

Reflected XSS vulnerability in Jenkins gitlab-hook Plugin

Also known asGHSA-8696-836p-c8qp

Published

Jan 15, 2020

Updated

Apr 10, 2026

Affected

1 pkg

Patched

None yet

Exploits

4 known

EPSS Exploitation Probability

via FIRST.org ↗

92.7%probability of exploitation in next 30 days

Very High Risk100th percentile0.00%

EPSS (Exploit Prediction Scoring System) is a daily probability model maintained by FIRST.org. It estimates the likelihood a CVE will be exploited in production environments within the next 30 days, derived from real-world threat intelligence signals.

Blast Radius

1 pkg affected

☕org.jenkins-ci.ruby-plugins:gitlab-hook

Real-time download stats are indexed for npm and PyPI packages. This vulnerability affects Maven packages — download data is not available via public APIs for these ecosystems.

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.

Affected Packages

1 total

Ecosystem	Package	Vulnerable range	Fix
☕Maven	`org.jenkins-ci.ruby-plugins:gitlab-hook`	all versions	No fix

Exploits & PoCs

Research use only. For defensive security, authorized penetration testing, and academic research only. Never execute exploit code against systems without explicit written authorization.

EDB-47927webappsjava

Jenkins Gitlab Hook Plugin 1.4.2 - Reflected Cross-Site Scripting

by Ai Ho · Jan 16, 2020

Exploit-DB Source

Frequently Asked 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.

O3 Security · Impact-Aware SCA

Is CVE-2020-2096 in your stack?

O3 detects CVE-2020-2096 across Maven dependencies and uses function-level reachability to confirm whether the vulnerable code path is actually reachable — not just present. No false positives.

Scan my stack How O3 SCA works