Improper handling of case sensitivity in Jenkins OpenId Connect Authentication Plugin
The Jenkins OpenId Connect Authentication Plugin 4.452.v2849b_d3945fa_ and earlier treats usernames as case-insensitive.
On a Jenkins instance configured with a case-sensitive OpenID Connect provider, this allows attackers to log in as any user by providing a username that differs only in letter case, potentially gaining administrator access to Jenkins.
OpenId Connect Authentication Plugin 4.453.v4d7765c854f4 introduces an advanced configuration option to manage username case sensitivity, with default to case-sensitive.
Affected software
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| Platform | Package | Vulnerable versions | Fixed in |
|---|---|---|---|
| Java / Kotlin (Maven) | org.jenkins-ci.plugins:oic-auth | < 4.453.v4d7765c854f4 | 4.453.v4d7765c854f4 |
References
- CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H- Weakness (CWE)
CWE-178, CWE-276- Platform
- Java / Kotlin (Maven)
- Package
org.jenkins-ci.plugins:oic-auth- Disclosed
- 22.01.2025
- Updated
- 11.10.2026 12:21
Sources and licenses
OSV / GitHub Advisory Database - GHSA-q9cm-88jx-3vfw - CC BY 4.0
Vulnerability history: org.jenkins-ci.plugins:oic-auth
All published vulnerabilities of this package (Java / Kotlin (Maven)), newest first. Shows whether this is a one-off slip or a package that needs watching.
- Total entries
- 8
- First → latest
- 05.2022 01.2025
- Without a fix
- 0
- Exploited in attacks
- 0
Severity breakdown
- Critical 2
- High 3
- Medium 3
Disclosures per year
- 2022: 1
- 2023: 3
- 2024: 3
- 2025: 1
- 2026: 0
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Improper handling of case sensitivity in Jenkins OpenId Connect Authentication Plugin this entry
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