CVE-2021-40604

Name: CVE-2021-40604
Creator: NVD / NIST
Published: 2022-06-13T18:15:09.787+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

CRITICALCVSS 9.1/10EPSS 1.13%

Last modified Jun 17, 2026

CVE-2021-40604 is a critical-severity vulnerability rated 9.1/10 on the CVSS scale. A Server-Side Request Forgery (SSRF) vulnerability in IPS Community Suite before 4.6.2 allows remote authenticated users to request arbitrary URLs or trigger deserialization via phar protocol when generating class names dynamically. In some cases an exploitation is possible by an unauthenticated user.. EPSS estimates a 1.13% chance of exploitation in the next 30 days.

Description

A Server-Side Request Forgery (SSRF) vulnerability in IPS Community Suite before 4.6.2 allows remote authenticated users to request arbitrary URLs or trigger deserialization via phar protocol when generating class names dynamically. In some cases an exploitation is possible by an unauthenticated user.

Metrics

CVSS 3.1

9.1/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N

EPSS Probability

1.13%

62.2th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-918

Affected Software

Vendor	Product	Versions
Invisioncommunity	Ips Community Suite	< 4.6.2

References

https://invisioncommunity.com/release-notes/462-r99/Release Notes, Vendor Advisory
https://invisioncommunity.com/release-notes/462-r99/Release Notes, Vendor Advisory

Timeline

Published: Jun 13, 2022
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2021-40604?

How severe is CVE-2021-40604?

CVE-2021-40604 has a CVSS score of 9.1/10 (CRITICAL severity). The EPSS model estimates a 1.13% probability of exploitation in the next 30 days.

How do I fix CVE-2021-40604?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2021-40604?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST