CVE-2021-26598 Incorrect Access Control in ImpressCMS

Medium 5.3 Published Updated

Unauthenticated attackers can access user search functionality in ImpressCMS due to incorrect access control, potentially exposing user data.

Exploited in the wild
Not known
Login needed
Not needed
Attackable
Over the internet
Victim action needed
Not needed
Fix
Available

What is CVE-2021-26598?

CVE-2021-26598 is a medium-severity missing authorization vulnerability in n/a, published on 28 Mar 2022. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

ImpressCMS before 1.4.3 has Incorrect Access Control because include/findusers.php allows access by unauthenticated attackers (who are, by design, able to have a security token).

Weakness: CWE-287

Which versions are affected by CVE-2021-26598?

2 open source packages ship an affected version, including impresscms/impresscms. It affects 1 product.

PackageAffectedFixed in
impresscms/impresscms PackagistAll versions1.4.3
impresscms/impresscms PackagistAll versions1.4.3

Products include Impresscms Impresscms.

How do I fix CVE-2021-26598?

Upgrade impresscms/impresscms to 1.4.3 or later.

Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.

Is CVE-2021-26598 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2021-26598 exists.

Public exploit code: 1 Nuclei template.

Sources

Also known as GHSA-48p3-xfvw-g59c.

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