CVE-2022-0963
Published: 15 March 2022
Summary
CVE-2022-0963 is a medium-severity Cross-site Scripting (CWE-79) vulnerability in Microweber Microweber. Its CVSS base score is 5.4 (Medium).
Operationally, ranked in the top 7.6% 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-2022-0963 is a stored cross-site scripting vulnerability (CWE-79) caused by unrestricted XML file uploads in the Microweber content management system. It affects the microweber/microweber GitHub repository in all versions prior to 1.2.12 and carries a CVSS 3.1 score of 5.4.
An attacker with low-privileged authenticated access can upload a crafted XML file that is stored and later rendered in other users' browsers, achieving limited confidentiality and integrity impact with changed scope. The attack requires user interaction and can be performed over the network with low complexity.
Public references point to a fix merged in commit 975fc1d6d3fba598ee550849ceb81af23ce72e08, which restricts XML file handling and eliminates the stored XSS vector; administrators are advised to upgrade to version 1.2.12 or later. The associated EPSS score has remained flat at 0.0826 with no material increase after disclosure.
EU & UK References
- 🇪🇺 ENISA EUVD: EUVD-2022-1508
Vulnerability details
Unrestricted XML Files Leads to Stored XSS in GitHub repository microweber/microweber prior to 1.2.12.
- 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.