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CVE-2025-24026— iTop Inefficient Regular Expression Complexity vulnerability

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.

iTop是Combodo开源的一个简单的、基于 Web 的 IT 服务管理工具。 iTop 3.2.1之前版本存在安全漏洞，该漏洞源于正则表达式拒绝服务可能影响服务器。

CVSS 5.3 · Medium EPSS 0.32% · P23

Possible ATT&CK Techniques 1 AI

T1499 · Endpoint Denial of Service
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I. Basic Information for CVE-2025-24026

Vulnerability Information
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Vulnerability Title
iTop Inefficient Regular Expression Complexity vulnerability
Source: CVE Program / CVE List V5
Vulnerability Description
iTop is an web based IT Service Management tool. Versions prior to 3.2.1 are vulnerable to regular expression denial of service (ReDoS) that may, under some circumstances, affect iTop server. Version 3.2.1 doesn't use the affected variable in the regular expression. As a workaround, if iTop app_root_url is defined in the configuration file, then there is no possible way to exploit this ReDoS.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
CWE-1333
Source: CVE Program / CVE List V5
Vulnerability Title
iTop 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
iTop是Combodo开源的一个简单的、基于 Web 的 IT 服务管理工具。 iTop 3.2.1之前版本存在安全漏洞，该漏洞源于正则表达式拒绝服务可能影响服务器。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
Combodo iTop < 3.2.1 -

II. Public POCs for CVE-2025-24026

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III. Intelligence Information for CVE-2025-24026

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Same Patch Batch · Combodo · 2025-05-14 · 7 CVEs total

CVE-2025-24022 8.6 HIGH iTop server vulnerable to portal code injection
CVE-2024-52601 6.5 MEDIUM iTop portal Insecure Direct Object Reference vulnerability
CVE-2024-56157 6.3 MEDIUM iTop vulnerable to Self XSS in CSV Import
CVE-2025-24021 5.0 MEDIUM iTop doesn't have mass assignment of fields in the portal form
CVE-2025-24969 5.0 MEDIUM iTop portal user can see any other contact's picture
CVE-2025-24785 4.3 MEDIUM iTop dashboard vulnerable to denial of service

IV. Related Vulnerabilities

Same product: iTop
Same vendor: Combodo
Same weakness: CWE-1333

V. Comments for CVE-2025-24026

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