CVE-2023-30520
Published: 12 April 2023
Summary
CVE-2023-30520 is a medium-severity Cross-site Scripting (CWE-79) vulnerability in Jenkins Quay.Io Trigger. Its CVSS base score is 5.4 (Medium).
Operationally, ranked in the top 8.3% of CVEs by exploit likelihood; it is not currently listed in the CISA KEV catalog.
Deeper analysis
The Jenkins Quay.io trigger Plugin version 0.1 and earlier contains a stored cross-site scripting vulnerability because it fails to restrict URL schemes on repository homepage URLs received through Quay.io trigger webhooks. The affected component is the webhook processing logic within this Jenkins plugin, which directly incorporates unvalidated input into stored pages.
Attackers who can submit crafted Quay.io trigger webhook payloads are able to exploit the flaw to achieve stored XSS, allowing execution of arbitrary scripts in the context of other users who view the affected Jenkins pages. The vulnerability carries a CVSS 3.1 score of 5.4, reflecting network attack vector, low attack complexity, and required privileges combined with user interaction.
The Jenkins security advisory SECURITY-2850, published on 2023-04-12, addresses the issue and is referenced alongside related disclosures on the Openwall mailing list. No further mitigation details such as specific configuration changes or workarounds are provided in the available references.
EU & UK References
- 🇪🇺 ENISA EUVD: EUVD-2023-1161
Vulnerability details
Jenkins Quay.io trigger Plugin 0.1 and earlier does not limit URL schemes for repository homepage URLs submitted via Quay.io trigger webhooks, resulting in a stored cross-site scripting (XSS) vulnerability exploitable by attackers able to submit crafted Quay.io trigger webhook payloads.
- 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.