CVE-2022-23108
Published: 12 January 2022
Summary
CVE-2022-23108 is a medium-severity Cross-site Scripting (CWE-79) vulnerability in Jenkins Badge. Its CVSS base score is 5.4 (Medium).
Operationally, ranked at the 42.7th percentile by exploit likelihood (below the median); it is not currently listed in the CISA KEV catalog.
Deeper analysis
Jenkins Badge Plugin 1.9 and earlier contains a stored cross-site scripting vulnerability because it neither escapes badge descriptions nor restricts allowed protocols during badge creation. The affected component is the Badge Plugin for Jenkins, which processes user-supplied badge content without proper output encoding or protocol validation.
Attackers holding Item/Configure permission can supply a malicious badge description containing script or disallowed protocol content. When the badge is later rendered, the injected payload executes in the context of other users viewing the affected Jenkins item, enabling theft of session tokens or other actions within the Jenkins UI.
The Jenkins security advisory published on 2022-01-12 and the corresponding oss-security mailing list posting recommend upgrading the Badge Plugin to a version that performs proper escaping and protocol checks. Administrators are advised to apply the fix promptly and review existing badges for unexpected content.
EPSS for this CVE rose from a low baseline to a peak of 0.1639 before receding to the current value of 0.0021, indicating a period of increased exploitation interest well after initial disclosure.
EU & UK References
- 🇪🇺 ENISA EUVD: EUVD-2022-0468
Vulnerability details
Jenkins Badge Plugin 1.9 and earlier does not escape the description and does not check for allowed protocols when creating a badge, resulting in a stored cross-site scripting (XSS) vulnerability exploitable by attackers with Item/Configure permission.
- CWE(s)
Related Threats
No named actor attribution yet. ATT&CK technique mapping in progress for this CVE.
Affected Assets
Mitigating Controls
Likely Mitigating Controls AI
Per-CVE control mapping for this CVE has not run yet; the list below is derived from the weakness types (CWEs) cited in the NVD entry.
Penetration testing submits XSS payloads to web applications, detecting cross-site scripting flaws for subsequent remediation.
Validates web inputs to reject script-related content that could produce XSS.
Output validation against expected content can reject or sanitize script content in generated web pages, reducing XSS exploitability.