Vulnerability identifier: #VU57098

Vulnerability risk: Medium

CVSSv3.1: 7.1 [CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2021-41126

CWE-ID: CWE-285

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
October CMS
Web applications / CMS

Vendor: OctoberCMS

Description

The vulnerability allows a remote user to compromise the affected application.

The vulnerability exists due to improper authorization. An attacker who previously had an administrative account with access to the admin interface is able to sign in to the backend using October CMS v2.0 even after the account has been deleted.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

October CMS: 2.1.11

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External links
http://github.com/octobercms/october/security/advisories/GHSA-6gjf-7w99-j7x7/

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Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.