CVE-2022-38463
Published: 23 August 2022
Summary
CVE-2022-38463 is a medium-severity Cross-site Scripting (CWE-79) vulnerability in Servicenow Servicenow. Its CVSS base score is 6.1 (Medium).
Operationally, ranked in the top 2.2% of CVEs by exploit likelihood; it is not currently listed in the CISA KEV catalog.
Deeper analysis
ServiceNow through San Diego Patch 4b and Patch 6 contains a reflected cross-site scripting flaw (CVE-2022-38463, CWE-79) in the logout functionality. The vulnerability is reachable over the network without authentication and is rated 6.1 under CVSS 3.1 (AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N).
An unauthenticated attacker can supply a crafted link that, when opened by a user, executes attacker-controlled script in the context of the ServiceNow instance. Successful exploitation can result in limited disclosure of session data or actions performed within the victim’s privileges.
ServiceNow addresses the issue in knowledge base article KB1156793, which contains the official mitigation steps and patch guidance for affected releases. The associated EPSS score has remained essentially flat near 0.48 since disclosure, indicating no material increase in observed exploitation interest.
EU & UK References
- 🇪🇺 ENISA EUVD: EUVD-2022-41046
Vulnerability details
ServiceNow through San Diego Patch 4b and Patch 6 allows reflected XSS in the logout functionality.
- 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.