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MEDIUM severity

GitHub Authentication Plugin showed plain text client secret in configuration formGHSA-87pj-9q82-m9qh

MEDIUMFix: jenkinsci/github-oauth-plugin@10d173f

GHSA-87pj-9q82-m9qh is a medium-severity (CVSS 4.3) Information Exposure vulnerability in org.jenkins-ci.plugins:github-oauth. A fix is available for org.jenkins-ci.plugins:github-oauth — see the affected versions and patch details below.

Also known asCVE-2019-1003018
Published
Updated
Affected
1 pkg
Patched
1 / 1
Exploits
None indexed
Exploitation data as of Nov 10, 2026 · OSV.dev, NVD, FIRST.org (EPSS)

EPSS Exploitation Probability

via FIRST.org ↗
1.1%probability of exploitation in next 30 days
Lower Risk0.00%
Lower risk than most CVEs67th percentile — riskier than 67% of all scored CVEsHighest risk
0.00%0.54%1.09%1.63%0.0%1.1%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:github-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

An exposure of sensitive information vulnerability exists in Jenkins GitHub Authentication Plugin 0.29 and earlier in GithubSecurityRealm/config.jelly that allows attackers able to view a Jenkins administrator's web browser output, or control the browser (e.g. malicious extension) to retrieve the configured client secret.

Affected Packages

1 total 1 fixed
EcosystemPackageVulnerable rangeFix
☕Mavenorg.jenkins-ci.plugins:github-oauthall versions0.31org.jenkins-ci.plugins:github-oauth:0.31

Affected Products

1 product · 1 configurations
Application
github oauthjenkins
≤ 0.29
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:github-oauth, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.

  2. Fix

    Update org.jenkins-ci.plugins:github-oauth to 0.31 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms GHSA-87pj-9q82-m9qh is resolved across your whole dependency graph.

  3. Workarounds

    Assume what was exposed is already known: rotate any credential, token or key that the affected component could return, restrict the endpoint to callers that genuinely need it, and strip sensitive fields from responses and error output at the boundary rather than relying on the client not to read them.

Frequently Asked Questions

An exposure of sensitive information vulnerability exists in Jenkins GitHub Authentication Plugin 0.29 and earlier in GithubSecurityRealm/config.jelly that allows attackers able to view a Jenkins administrator's web browser output, or control the browser (e.g. malicious extension) to retrieve the configured client secret.
O3 Security · Impact-Aware SCA

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GitHub Authentication Plugin showed plain text client…