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MEDIUM severity

CVE-2019-10372 — gitlab-oauth

MEDIUMFix: jenkinsci/gitlab-oauth-plugin@10059a4

CVE-2019-10372 is a medium-severity (CVSS 6.1) Open Redirect vulnerability in org.jenkins-ci.plugins:gitlab-oauth. A fix is available for org.jenkins-ci.plugins:gitlab-oauth — see the affected versions and patch details below.

Jenkins Gitlab Authentication Plugin Open Redirect vulnerability

Also known asGHSA-pg59-2w33-8vmc
Published
Updated
Affected
1 pkg
Patched
1 / 1
Exploits
None indexed
Exploitation data as of Nov 5, 2026 · OSV.dev, NVD, FIRST.org (EPSS)

EPSS Exploitation Probability

via FIRST.org ↗
1.0%probability of exploitation in next 30 days
Lower Risk0.00%
Lower risk than most CVEs62th percentile — riskier than 62% of all scored CVEsHighest risk
0.00%0.49%0.98%1.47%0.1%1.0%May 26Sep 26Nov 26

Probability of exploitation in the next 30 days, from FIRST.org EPSS.

How urgent is this, really

Where this sits among everything scored

Real-World Exposure

1 pkg affected
☕org.jenkins-ci.plugins:gitlab-oauth

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

GitLab Authentication Plugin records the HTTP Referer header when the authentication process starts and redirects users to that URL when the user has finished logging in.

This implements an open redirect, allowing malicious sites to implement a phishing attack, with users expecting they have just logged in to Jenkins.

Affected Packages

1 total 1 fixed
EcosystemPackageVulnerable rangeFix
☕Mavenorg.jenkins-ci.plugins:gitlab-oauthall versions1.5org.jenkins-ci.plugins:gitlab-oauth:1.5

Affected Products

1 product · 1 configurations
Application
gitlab oauthjenkins
≤ 1.4
range

Detection & mitigation playbook

Open-source dependency

  1. Detect

    Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for org.jenkins-ci.plugins:gitlab-oauth, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.

  2. Fix

    Update org.jenkins-ci.plugins:gitlab-oauth to 1.5 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms CVE-2019-10372 is resolved across your whole dependency graph.

  3. Workarounds

    Stop reflecting attacker-controlled destinations: resolve every redirect target against an allowlist of paths or hosts you own, prefer a server-side key over a full URL in the request, and reject absolute URLs entirely where the flow only ever needs a relative one.

Frequently Asked Questions

GitLab Authentication Plugin records the HTTP `Referer` header when the authentication process starts and redirects users to that URL when the user has finished logging in. This implements an open redirect, allowing malicious sites to implement a phishing attack, with users expecting they have just logged in to Jenkins.
O3 Security · Impact-Aware SCA

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CVE-2019-10372: gitlab-oauth Open Redirect — Fixed in 1.5