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CVE-2021-32735

7.1 · HIGH

Kirby is a content management system.

Published Jul 2, 2021CWE-80EPSS 0.53%

Overview

CVE-2021-32735 is a high-severity vulnerability. It was published on July 2, 2021 and has a CVSS 3.1 base score of 7.1 (HIGH).

This vulnerability has a CVSS 3.1 base score of 7.1, rated HIGH. It can be exploited remotely over the network. Some level of privileges is required for exploitation.

Technical description

Kirby is a content management system. In Kirby CMS versions 3.5.5 and 3.5.6, the Panel's `ListItem` component (used in the pages and files section for example) displayed HTML in page titles as it is. This could be used for cross-site scripting (XSS) attacks. Malicious authenticated Panel users can escalate their privileges if they get access to the Panel session of an admin user. Visitors without Panel access can use the attack vector if the site allows changing site data from a frontend form. Kirby 3.5.7 patches the vulnerability. As a partial workaround, site administrators can protect against attacks from visitors without Panel access by validating or sanitizing provided data from the frontend form.

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/getkirby/kirby/releases/tag/3.5.7GitHubgithub.com/getkirby/kirby/security/advisories/GHSA-2f2w-349x-vrqmGitHubgithub.com/getkirby/kirby/releases/tag/3.5.7GitHubgithub.com/getkirby/kirby/security/advisories/GHSA-2f2w-349x-vrqm

How CyberStrike helps

Frequently asked questions

What is CVE-2021-32735?

CVE-2021-32735 is a high-severity vulnerability. It was published on July 2, 2021 and has a CVSS 3.1 base score of 7.1 (HIGH).

How severe is CVE-2021-32735?

This vulnerability has a CVSS 3.1 base score of 7.1, rated HIGH. It can be exploited remotely over the network. Some level of privileges is required for exploitation.

How do I fix or remediate CVE-2021-32735?

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-2021-32735?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2021-32735 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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