CVE-2026-92895 Details
Description
The Live2DWebCanvas plugin for WordPress is vulnerable to Arbitrary File Upload in all versions up to, and including, 2.2.1 via the download_one_file function. This is due to missing file extension whitelist and MIME type validation in download_one_file() when writing files derived from attacker-controlled manifest entries to the web-served plugin directory. This makes it possible for unauthenticated attackers to upload files that may be executable, which makes remote code execution possible when the plugin's apiType setting is configured as custom-local (self-hosted model mode), a non-default option that requires a paid license and prints the REST nonce and one-time session tokens into every front-end page.
A vulnerability allowing arbitrary file upload has been identified in the Live2DWebCanvas plugin for WordPress, affecting all versions through 2.2.1. The issue arises in the download_one_file function, where there is a lack of proper validation for file extensions and MIME types. This oversight allows unauthenticated attackers to upload potentially executable files to the web-served plugin directory, derived from attacker-controlled manifest entries. If the plugin's apiType setting is set to custom-local (self-hosted model mode), which requires a paid license, this vulnerability could be exploited to execute remote code, as the setting injects REST nonce and one-time session tokens into every front-end page.
No known patch is available. It is recommended to review the vulnerability details and consider uninstalling the affected plugin.
Metrics
CVSS 4.0 Severity and Vector Strings:
VolerionCVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
Volerion
Assessed Nov 6, 2026CISA-ADP
Assessed Nov 6, 2026References to Advisories, Solutions, and Tools
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Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-434 | Unrestricted Upload of File with Dangerous Type | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| Live2DWebCanvas | <= 2.2.1 (semver) |
CPE
Remediation
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Change History
2 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Nov 6, 2026 | CVE Modified | CISA-ADP |
| Nov 6, 2026 | New CVE Received | [email protected] |