Go to homepageCyberStrike

Menu

Star on GitHub · 3.3k
Sign inDownload

CVE-2020-26231

5.2 · MEDIUM

October is a free, open-source, self-hosted CMS platform based on the Laravel PHP Framework.

Published Nov 23, 2020CWE-862EPSS 0.29%

Overview

CVE-2020-26231 is a medium-severity vulnerability. It was published on November 23, 2020 and has a CVSS 3.1 base score of 5.2 (MEDIUM).

This vulnerability has a CVSS 3.1 base score of 5.2, rated MEDIUM. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.

Technical 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.

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

References

GitHubgithub.com/octobercms/october/commit/d34fb8ab51108495a9a651b841202d935f4e12f7GitHubgithub.com/octobercms/october/security/advisories/GHSA-r89v-cgv7-3jhxGitHubgithub.com/octobercms/october/commit/d34fb8ab51108495a9a651b841202d935f4e12f7GitHubgithub.com/octobercms/october/security/advisories/GHSA-r89v-cgv7-3jhx

How CyberStrike helps

Frequently asked questions

What is CVE-2020-26231?

CVE-2020-26231 is a medium-severity vulnerability. It was published on November 23, 2020 and has a CVSS 3.1 base score of 5.2 (MEDIUM).

How severe is CVE-2020-26231?

This vulnerability has a CVSS 3.1 base score of 5.2, rated MEDIUM. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.

How do I fix or remediate CVE-2020-26231?

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2020-26231?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2020-26231 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

Related MEDIUM CVEs from 2020

View all
Browse by year2026202520242023202220212020201920182017201620152014201320122011201020092008200720062005200420032002200120001999
LiveWatch live →