CVE-2026-33240Network attack vector

Reflected XSS via unsafe HTML insertion

Published Aug 21, 2026 · Updated Aug 25, 2026

Reflected XSS in the foreign key search criteria API in Combodo iTop before 3.2.3 allows remote attackers to execute script in a user's browser. The search modal passes criteria to ajax.render.php and inserts the server-returned HTML into the DOM as a jQuery object without neutralizing reflected input. A victim must open the crafted request in a JavaScript-enabled browser, allowing script to act within the victim's iTop origin and session.

CVSS severity8.8
High
EPSS probability0.27%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Reflected XSS in the foreign key search criteria API in Combodo iTop before 3.2.3 allows remote attackers to execute script in a user's browser. The search modal passes criteria to ajax.render.php and inserts the server-returned HTML into the DOM as a jQuery object without neutralizing reflected input. A victim must open the crafted request in a JavaScript-enabled browser, allowing script to act within the victim's iTop origin and session.

The record

CVE
CVE-2026-33240
Published
Aug 21, 2026
Updated
Aug 25, 2026
Vendor
Combodo
Product
iTop
Classifications
CWE-79, T1189
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Aug 21, 2026CVE publishedPublication date reported by the CVE source.
  2. Aug 25, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=< 3.2.3

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Combodo · iTopversion=< 3.2.3

Published CVSS scores

8.8GitHubCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
T1189Drive-by Compromise

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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