Is CVE-2020-26231 actively exploited?

No active exploitation of CVE-2020-26231 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2020-26231 be exploited remotely?

No. CVE-2020-26231 requires local access to exploit.

What is the CVSS score of CVE-2020-26231?

CVE-2020-26231 has a CVSS score of 6.7 (MEDIUM).

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MEDIUM

CVE-2020-26231

CWE-862Published: November 23, 2020· Updated: Jun 17, 2026

6.7

CVSS v3.1

Official Description

October is a free, open-source, self-hosted CMS platform based on the Laravel PHP Framework. A bypass of CVE-2020-15247 (fixed in 1.0.469 and 1.1.0) was discovered that has the same impact as CVE-2020-15247. An authenticated backend user with the cms.manage_pages, cms.manage_layouts, or cms.manage_partials permissions who would normally not be permitted to provide PHP code to be executed by the CMS due to cms.enableSafeMode being enabled is able to write specific Twig code to escape the Twig sandbox and execute arbitrary PHP. This is not a problem for anyone that trusts their users with those permissions to normally write & manage PHP within the CMS by not having cms.enableSafeMode enabled, but would be a problem for anyone relying on cms.enableSafeMode to ensure that users with those permissions in production do not have access to write & execute arbitrary PHP. Issue has been patched in Build 470 (v1.0.470) and v1.1.1.

NVD Source

Technical Analysis

CVE-2020-26231 requires local access, meaning attackers must already have a foothold on the target system.

Exploitation requires high privileges, which limits the exposure to scenarios where an attacker has already gained initial access.

A successful exploit results in complete confidentiality breach (data exposure), full integrity compromise (data manipulation), availability disruption (denial of service), with a CVSS base score of 6.7.