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CVE-2026-34836— Combodo iTop: Improper access control in ajax.render.php and ajax.document.php

Quick assessment

Affected
Combodo iTop
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Combodo iTop 是一款基于 Web 的 IT 服务管理工具。在 3.2.3 版本之前， 和 中存在不适当的访问控制问题，导致在未检查用户权限的情况下即可访问文档。该问题已在 3.2.3 版本中得到修复。

CVSS 6.5 · Medium EPSS 0.28% · P21

Possible ATT&CK Techniques 1 AI

T1528 · Steal Application Access Token

Affected Version Matrix 1

VendorProduct Version RangeStatus
Combodo iTop < 3.2.3 affected
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I. Basic Information for CVE-2026-34836

Vulnerability Information
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Vulnerability Title
Combodo iTop: Improper access control in ajax.render.php and ajax.document.php
Source: CVE Program / CVE List V5
Vulnerability Description
Combodo iTop is a web based IT service management tool. Prior to 3.2.3, improper access control in ajax.render.php and ajax.document.php allows for document access without checking on user permissions. This issue has been fixed in version 3.2.3.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
授权机制缺失
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
Combodo iTop < 3.2.3 -

II. Public POCs for CVE-2026-34836

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III. Intelligence Information for CVE-2026-34836

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Patches & Fixes for CVE-2026-34836 (1)

Vendor Advisories for CVE-2026-34836 (1)

Same Patch Batch · Combodo · 2026-08-21 · 18 CVEs total

CVE-2026-31936 8.8 HIGH Combodo iTop: Unauthorized access to object information via search operation
CVE-2026-33240 8.8 HIGH Combodo iTop: Reflected XSS in foreign key search criteria
CVE-2026-34741 8.6 HIGH Combodo iTop: Authentication bypass in exec.php allows PHP file execution
CVE-2026-30826 8.0 HIGH Combodo iTop: Reflected XSS in run_query.php
CVE-2026-30890 8.0 HIGH Combodo iTop: Reflected XSS in synchro/synchro_import.php
CVE-2026-31803 8.0 HIGH Combodo iTop: Reflected XSS in tag admin
CVE-2026-31880 8.0 HIGH Combodo iTop: Reflected XSS in universal search
CVE-2026-34948 7.7 HIGH Combodo iTop: Access control bypass via OQL joins
CVE-2026-30866 7.5 HIGH Combodo iTop: Insecured access to uploaded images via sniffed url
CVE-2026-27462 7.5 HIGH Combodo iTop: User enumeration via password reset
CVE-2026-27490 7.5 HIGH Combodo iTop: Weak secret generation for inline image
CVE-2026-30819 7.3 HIGH Combodo iTop: Reflected XSS in /pages/ajax.render.php dashboard_id parameter
CVE-2026-30865 7.1 HIGH Combodo iTop: Reflected XSS in dashboard save
CVE-2026-34949 6.5 MEDIUM Combodo iTop: Unauthenticated user can delete .readonly file
CVE-2026-27463 5.3 MEDIUM Combodo iTop: Version disclosure via login page logo
CVE-2026-33047 4.3 MEDIUM Combodo iTop: Object can be locked by a user without write permissions
CVE-2026-33333 3.5 LOW Combodo iTop: Information disclosure in ajax.render.php

IV. Related Vulnerabilities

Same product: iTop
Same vendor: Combodo
Same weakness: CWE-862

V. Comments for CVE-2026-34836

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