CVE-2023-2015
Published: 07 June 2023
Summary
CVE-2023-2015 is a medium-severity Cross-site Scripting (CWE-79) vulnerability in Gitlab Gitlab. Its CVSS base score is 4.4 (Medium).
Operationally, ranked in the top 9.1% of CVEs by exploit likelihood; it is not currently listed in the CISA KEV catalog.
Deeper analysis
A reflected cross-site scripting vulnerability exists in GitLab Community Edition and Enterprise Edition when users create new abuse reports. The flaw affects all versions from 15.8 prior to 15.10.8, from 15.11 prior to 15.11.7, and from 16.0 prior to 16.0.2, and is tracked under CWE-79 with a CVSS 3.1 score of 4.4.
An attacker with low-privileged access can supply a crafted payload during abuse-report creation that executes in the context of another user who views the report. Successful exploitation allows the attacker to perform arbitrary actions on behalf of the victim, such as modifying account settings or initiating other privileged operations within the GitLab instance.
GitLab has published patches that remediate the issue in the fixed releases listed above; administrators are advised to upgrade affected instances promptly. Public references, including the official CVE record and associated GitLab issue tracker entries, contain the version-specific remediation details.
EPSS for this CVE rose from a low baseline to a peak of 0.0936 before settling at the current value of 0.0605, indicating measurable post-disclosure exploitation interest that warrants renewed attention from defenders.
EU & UK References
- 🇪🇺 ENISA EUVD: EUVD-2023-33544
Vulnerability details
An issue has been discovered in GitLab CE/EE affecting all versions starting from 15.8 before 15.10.8, all versions starting from 15.11 before 15.11.7, all versions starting from 16.0 before 16.0.2. A reflected XSS was possible when creating new abuse reports…
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which allows attackers to perform arbitrary actions on behalf of victims.
- 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.