# CVE-2026-34741: Combodo iTop authentication bypass in exec.php

Source: https://junglewise.ai/threats/cve-2026-34741-combodo-itop-authentication-bypass-in-exec-php  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-08-21. Updated: 2026-09-25  
License: CC BY 4.0 with a link back

CVE-2026-34741 · Severity: high · CVSS 8.6 · Published 2026-08-21

Combodo iTop is a web-based IT service management platform used to track and manage IT operations. Prior to version 3.2.3, an unauthenticated attacker can bypass authentication and execute arbitrary PHP files from the production environment directory, allowing complete compromise of the system without requiring any credentials or user interaction.

Technologies: [Combodo iTop](https://junglewise.ai/threats/technologies/itop). Vendors: [Combodo](https://junglewise.ai/threats/vendors/combodo).

## Quick answers

**Is CVE-2026-34741 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-34741 being exploited in the wild.

**How severe is CVE-2026-34741?** High severity, with a CVSS score of 8.6, published 21 August 2026.

**Which products and versions are affected?** Combodo iTop prior to 3.2.3.

**Is there a fix for CVE-2026-34741?** A patch was published on 2026-03-16: Fix committed to develop branch (PR #835) Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

**How is CVE-2026-34741 attacked?** It is attacked over the network.

**Am I affected by CVE-2026-34741?** Check whether you run Combodo iTop at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## Technical details

The vulnerability is an authentication bypass in the exec.php file that allows unauthenticated remote attackers to execute arbitrary PHP files from the env-production directory on a new iTop instance. The root cause is insufficient authentication checks in exec.php before allowing file execution. The attack vector is network-based with no authentication required, no user interaction needed, and affects production environments. An attacker can achieve arbitrary PHP code execution and data manipulation (high integrity impact). The vulnerability is fixed in iTop versions 3.2.3 and 3.3.0 through the introduction of a configuration option (security.force_login_when_no_delegated_authentication_endpoints_list) to enforce authentication, though this is not the default behavior initially to maintain backward compatibility.

## Affected products

- Combodo iTop prior to 3.2.3

## Timeline

- 2026-08-21: disclosed
- 2026-03-16: patched: Fix committed to develop branch (PR #835)

## References

- [https://github.com/Combodo/iTop/commit/4fe61cbdc779cb5576395d4ae8be31f9fbc7306c](https://github.com/Combodo/iTop/commit/4fe61cbdc779cb5576395d4ae8be31f9fbc7306c)
- [https://github.com/Combodo/iTop/security/advisories/GHSA-36h9-5qw2-jcc6](https://github.com/Combodo/iTop/security/advisories/GHSA-36h9-5qw2-jcc6)

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- [Combodo iTop PHP object injection in user preferences](https://junglewise.ai/threats/cve-2026-40877-combodo-itop-php-object-injection-in-user-preferences)
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- [Combodo iTop reflected XSS in dashboard revert](https://junglewise.ai/threats/cve-2026-30864-combodo-itop-reflected-xss-in-dashboard-revert)
- [Combodo iTop .readonly file deletion by unauthenticated users](https://junglewise.ai/threats/cve-2026-34949-combodo-itop-readonly-file-deletion-by-unauthenticated-users)