CVE-2024-31351
Published: 17 May 2024
Summary
CVE-2024-31351 is a critical-severity Unrestricted Upload of File with Dangerous Type (CWE-434) vulnerability in Copymatic Copymatic. Its CVSS base score is 10.0 (Critical).
Operationally, exploitation aligns with the MITRE ATT&CK technique Web Shell (T1505.003); ranked in the top 1.8% of CVEs by exploit likelihood; it is not currently listed in the CISA KEV catalog.
This vulnerability is AI-related — categorised as Enterprise AI Assistants; in the Other ATLAS/OWASP Terms risk domain.
Deeper analysis
The vulnerability is an unrestricted upload of a file with a dangerous type, tracked as CWE-434, affecting the Copymatic – AI Content Writer & Generator WordPress plugin in versions through 1.6. It carries a CVSS 3.1 base score of 10.0, reflecting network attack vector, low complexity, no required privileges or user interaction, and changed scope with high impact on confidentiality, integrity, and availability.
Unauthenticated remote attackers can exploit the flaw to upload arbitrary files to the affected site, enabling them to achieve full compromise of the target system or connected components.
Public advisories published by Patchstack document the unauthenticated arbitrary file upload issue in the plugin and provide the associated vulnerability details for remediation tracking. The EPSS score has remained at 0.5681 with no material increase observed since disclosure.
EU & UK References
- 🇪🇺 ENISA EUVD: EUVD-2024-29247
Vulnerability details
Unrestricted Upload of File with Dangerous Type vulnerability in Copymatic Copymatic – AI Content Writer & Generator.This issue affects Copymatic – AI Content Writer & Generator: from n/a through 1.6.
- CWE(s)
AI Security AnalysisAI
- AI Category
- Enterprise AI Assistants
- Risk Domain
- Other ATLAS/OWASP Terms
- OWASP Top 10 for LLMs 2025
- None mapped
- Classification Reason
- Copymatic is a WordPress plugin explicitly described as 'AI Content Writer & Generator', which functions as an AI-powered content generation assistant integrated into enterprise-level CMS environments like WordPress.
Related Threats
MITRE ATT&CK Enterprise TechniquesAI
Why these techniques?
Unauthenticated arbitrary file upload enables exploitation of public-facing WordPress plugin (T1190) and deployment/execution of web shells or backdoors (T1100).
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.
Requiring identifiable owners for portable devices reduces the attack surface for unrestricted uploads of dangerous file types via anonymous media.
Dangerous file uploads can be detonated in the chamber to determine malice before any production write or execution occurs.
Prevents unrestricted writing of arbitrary or malicious firmware by keeping hardware write-protect enabled except under tightly controlled manual procedures.
Scans files from external sources on download/open/execute, blocking unrestricted uploads of dangerous file types.