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CVE-2021-29487

7.4 · HIGH

octobercms in a CMS platform based on the Laravel PHP Framework.

Published Aug 26, 2021CWE-287EPSS 0.90%

Overview

CVE-2021-29487 is a high-severity vulnerability. It was published on August 26, 2021 and has a CVSS 3.1 base score of 7.4 (HIGH).

This vulnerability has a CVSS 3.1 base score of 7.4, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

Technical description

octobercms in a CMS platform based on the Laravel PHP Framework. In affected versions of the october/system package an attacker can exploit this vulnerability to bypass authentication and takeover of and user account on an October CMS server. The vulnerability is exploitable by unauthenticated users via a specially crafted request. This only affects frontend users and the attacker must obtain a Laravel secret key for cookie encryption and signing in order to exploit this vulnerability. The issue has been patched in Build 472 and v1.1.5.

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/library/commit/016a297b1bec55d2e53bc889458ed2cb5c3e9374GitHubgithub.com/octobercms/library/commit/5bd1a28140b825baebe6becd4f7562299d3de3b9GitHubgithub.com/octobercms/october/security/advisories/GHSA-h76r-vgf3-j6w5GitHubgithub.com/octobercms/library/commit/016a297b1bec55d2e53bc889458ed2cb5c3e9374GitHubgithub.com/octobercms/library/commit/5bd1a28140b825baebe6becd4f7562299d3de3b9GitHubgithub.com/octobercms/october/security/advisories/GHSA-h76r-vgf3-j6w5

How CyberStrike helps

Frequently asked questions

What is CVE-2021-29487?

CVE-2021-29487 is a high-severity vulnerability. It was published on August 26, 2021 and has a CVSS 3.1 base score of 7.4 (HIGH).

How severe is CVE-2021-29487?

This vulnerability has a CVSS 3.1 base score of 7.4, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2021-29487?

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-2021-29487?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2021-29487 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.

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