Read the docs
TI-2026-85882 Aliases CVE-2026-92895GHSA-5xwf-2jpg-pxvv

Unauthenticated file upload in Live2DWebCanvas WordPress plugin

Priority LOW 39CWE-434Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
High
Impact type
Code execution
Confidentiality · integrity · availability
High · High · High
Fix status
No fix listed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-434.

Summary

The Live2DWebCanvas plugin for WordPress is affected up to and including 2.2.1. The download_one_file function writes files from attacker-controlled manifest entries into the web-served plugin directory without file extension or MIME type validation (CWE-434). An unauthenticated remote attacker can upload executable files, which enables remote code execution when the apiType setting is set to custom-local, a non-default option that requires a paid license.

Written with Claude Haiku 5.5 from the sources below · 2026-11-06

Description from the CNA

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.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00915 60th percentileScored 2026-11-08
Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
jiangweifangLive2DWebCanvasup to 2.2.1—No fix listedCNA
  • Live2DWebCanvas Vendorjiangweifang Affected up to 2.2.1 Fixed in — No fix listed CNA

Remediation

The sources list no fixed version for Live2DWebCanvas.

Written with Claude Haiku 5.5 from the sources below · 2026-11-06

Timeline

  1. 2026-11-06 Threatist record created from CVE-2026-92895
  2. 2026-11-06 Alias added: GHSA-5xwf-2jpg-pxvv
  3. 2026-11-06 CISA SSVC decision points changed
  4. 2026-11-06 Priority changed: MEDIUM → LOW

References

Other 7

  • TI-2024-12795 Live2DWebCanvas <= 1.9.11 - Authenticated (Subscriber+) Arbitrary File Deletion CVSS 3.1HIGH 8.1

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences