# CVE-2026-34836: Combodo iTop improper access control in document handling

Source: https://junglewise.ai/threats/cve-2026-34836-combodo-itop-improper-access-control-in-document-handling  
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-2026-34836 · Severity: medium · CVSS 6.5 · Published 2026-08-21

Combodo iTop is a web-based IT service management platform used by organizations to track and manage IT infrastructure and services. An improper access control flaw in versions before 3.2.3 allows authenticated users with limited permissions to access documents without proper authorization checks, potentially exposing sensitive business data and IT configuration information to unauthorized personnel.

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

## Quick answers

**Is CVE-2026-34836 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-34836 being exploited in the wild.

**How severe is CVE-2026-34836?** Medium severity, with a CVSS score of 6.5, published 21 August 2026.

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

**Is there a fix for CVE-2026-34836?** A patch was published on 2026-03-30: Fix committed to repository for versions 3.2.3 and 3.3.0 Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

**How is CVE-2026-34836 attacked?** It is attacked over the network.

**Am I affected by CVE-2026-34836?** 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 improper access control issue in ajax.render.php and ajax.document.php that fails to validate user permissions when accessing documents. Unlike the Attachment class which enforces proper rights checks, the document handling code allows direct access without verifying the current user's authorization level. An attacker with valid iTop credentials (low-privilege user) can bypass permission controls to retrieve documents they should not have access to. The vulnerability requires network access to the iTop application and valid authentication, but no additional user interaction. The fix, implemented in versions 3.2.3 and 3.3.0, applies the same safety checks to documents that the Attachment class uses.

## Affected products

- Combodo iTop <3.2.3

## Timeline

- 2026-08-21: disclosed: CVE-2026-34836 published
- 2026-03-30: patched: Fix committed to repository for versions 3.2.3 and 3.3.0

## References

- [https://github.com/Combodo/iTop/commit/77915853875710f152a873842fa2a84ebd09719b](https://github.com/Combodo/iTop/commit/77915853875710f152a873842fa2a84ebd09719b)
- [https://github.com/Combodo/iTop/security/advisories/GHSA-2gvp-4cv3-cx6j](https://github.com/Combodo/iTop/security/advisories/GHSA-2gvp-4cv3-cx6j)

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