CVE-2023-6846
RCE in Filemanagerpro File Manager ≤ 8.3.4
Raw vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:HCVSS and EPSS are reproduced from their sources (NVD, FIRST EPSS). Risk Priority is our own derived reading, not an NVD score.
Summary
CVE-2023-6846 is a high-severity Code Injection (CWE-94) vulnerability in Filemanagerpro File Manager. Its CVSS base score is 8.8 (High).
Operationally, exploitation aligns with the MITRE ATT&CK technique Data Obfuscation (T1001); ranked in the top 3% of CVEs by exploit likelihood; it is not currently listed in the CISA KEV catalog; a public proof-of-concept is referenced.
The strongest mitigations our analysis identified map to SA-11 (Developer Testing and Evaluation) and SI-10 (Information Input Validation) — see the control section below for these in your framework.
Deeper analysis AI-assisted summary
Synthesised by an AI model from the NVD description and linked references — a reading aid, not an authoritative source.
The File Manager Pro plugin for WordPress is vulnerable to arbitrary file upload in all versions through 8.3.4. The flaw exists in the mk_check_filemanager_php_syntax AJAX handler, which permits upload of files containing executable PHP code without adequate validation. This corresponds to CWE-434 and CWE-94 and carries a CVSS 3.1 score of 8.8.
An authenticated attacker holding subscriber-level or higher privileges can invoke the affected AJAX function to upload a malicious file and subsequently execute arbitrary code on the server, achieving full compromise of the WordPress site and underlying host. No unauthenticated vector is described.
Public advisories from Wordfence and associated proof-of-concept references indicate that version 8.3.5 mitigates the issue by adding a capability check that restricts the function to administrators only; site owners are advised to update immediately. The EPSS score has remained flat at 0.1331 with no material increase since disclosure.
OWASP Top 10 for Web (2025)
EU & UK References
- 🇪🇺 ENISA EUVD: EUVD-2023-59050
Vulnerability Data
The File Manager Pro plugin for WordPress is vulnerable to Arbitrary File Upload in all versions up to, and including, 8.3.4 via the mk_check_filemanager_php_syntax AJAX function. This makes it possible for authenticated attackers, with subscriber access and above, to execute…
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code on the server. Version 8.3.5 introduces a capability check that prevents users lower than admin from executing this function.
- CWE(s)
Related Threats
MITRE ATT&CK Enterprise Techniques
CVEs Like This One
Affected Assets
Mitigating Controls
Control response
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V5.1.1V1.3.1
Mitigating Controls (NIST 800-53 r5) AI
Developer testing and evaluation finds code paths that accept and execute externally influenced strings.
Input validation directly stops untrusted data from being used to construct executable code without neutralization.
Malicious-code protection at entry points blocks dangerous file types from being accepted and executed.
Least privilege limits the damage an injected code fragment can perform once executed.
Least functionality restricts the file types and automatic processing capabilities the system will accept.
Requiring documented secure development standards and tools enforces use of safe code-generation APIs and escaping.
Mitigating Controls (NIST CSF 2.0) AI
Derived directly from the weakness types (CWEs) cited in the NVD entry via our AI-authored CWE→CSF cross-walk (authority under review) — links open the control.
PR.PS-06's SDLC practices directly target injection flaws via secure coding and testing (mostly), yet as a single broad outcome it leaves many code-generation specifics unaddressed (partial).
Hardened configuration baselines can enforce allowed file types and processing rules.
Restricting execution of unauthorized software directly blocks dangerous uploaded files from running.
PR.DS-10 protects runtime data confidentiality/integrity but has no bearing on neutralizing externally influenced input during code generation, so neither direction shows any preventive effect.
Mitigating Controls (ISO/IEC 27001:2022 Annex A) AI
Derived directly from the weakness types (CWEs) cited in the NVD entry via our AI-authored CWE→ISO cross-walk (authority under review) — links open the control.