CVE-2021-21407: Portal : the CSRF token isn't validated

Severity: medium (CVSS 6.5 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.5% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2021-07-21 · updated 2026-06-17
Weakness: CWE-352

Description

Combodo iTop is an open source, web based IT Service Management tool. Prior to version 2.7.4, the CSRF token validation can be bypassed through iTop portal via a tricky browser procedure. The vulnerability is patched in version 2.7.4 and 3.0.0.

Affected products

Combodo iTop: before 2.7.4 — fixed in 2.7.4

How to fix

Upgrade to a fixed version: Combodo iTop 2.7.4. Check the vendor advisory for mitigations.

References

https://github.com/Combodo/iTop/security/advisories/GHSA-9wq8-4qm9-3j6f
https://github.com/Combodo/iTop/security/advisories/GHSA-9wq8-4qm9-3j6f

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