CVE-2023-1318
Published: 10 March 2023
Summary
CVE-2023-1318 is a medium-severity Cross-site Scripting (CWE-79) vulnerability in Enhancesoft Osticket. Its CVSS base score is 5.4 (Medium).
Operationally, ranked in the top 8.7% of CVEs by exploit likelihood; it is not currently listed in the CISA KEV catalog; a public proof-of-concept is referenced.
Deeper analysis
CVE-2023-1318 is a generic cross-site scripting vulnerability (CWE-79) affecting the osTicket GitHub repository prior to version 1.16.6. The flaw received a CVSS 3.1 score of 5.4, reflecting network attack vector, low complexity, low privileges required, and user interaction needed, with changed scope and limited impacts on confidentiality and integrity.
An authenticated user with low privileges can supply crafted input that executes arbitrary script in the context of other users' sessions, enabling actions such as session hijacking or unauthorized data manipulation within the osTicket application. The requirement for user interaction and the changed scope indicate the payload can affect resources beyond the immediate component.
The referenced GitHub commit 343a2b47e164dd9090a3c9477ef273f0efa16a7d and the associated huntr.dev bounty report document the fix that was merged to address the issue; administrators should upgrade to osTicket 1.16.6 or later. The EPSS score rose from a low baseline to a peak of 0.1287 on 2025-12-11 before receding to the current value of 0.0647, indicating a period of increased exploitation interest after disclosure.
EU & UK References
- 🇪🇺 ENISA EUVD: EUVD-2023-23576
Vulnerability details
Cross-site Scripting (XSS) - Generic in GitHub repository osticket/osticket prior to v1.16.6.
- 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.