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CVE-2021-32655

3.5 · LOW

Nextcloud Server is a Nextcloud package that handles data storage.

Published Jun 1, 2021CWE-241EPSS 1.03%

Overview

CVE-2021-32655 is a low-severity vulnerability. It was published on June 1, 2021 and has a CVSS 3.1 base score of 3.5 (LOW).

This vulnerability has a CVSS 3.1 base score of 3.5, rated LOW. It can be exploited remotely over the network. Some level of privileges is required for exploitation.

Technical description

Nextcloud Server is a Nextcloud package that handles data storage. In versions prior to 19.0.11, 20.0.10, and 21.0.2, an attacker is able to convert a Files Drop link to a federated share. This causes an issue on the UI side of the sharing user. When the sharing user opens the sharing panel and tries to remove the "Create" privileges of this unexpected share, Nextcloud server would silently grant the share read privileges. The vulnerability is patched in versions 19.0.11, 20.0.10 and 21.0.2. No workarounds are known to exist.

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/nextcloud/security-advisories/security/advisories/GHSA-grph-cm44-p3jvRefhackerone.com/reports/1167929Refsecurity.gentoo.org/glsa/202208-17GitHubgithub.com/nextcloud/security-advisories/security/advisories/GHSA-grph-cm44-p3jvRefhackerone.com/reports/1167929Refsecurity.gentoo.org/glsa/202208-17

How CyberStrike helps

Frequently asked questions

What is CVE-2021-32655?

CVE-2021-32655 is a low-severity vulnerability. It was published on June 1, 2021 and has a CVSS 3.1 base score of 3.5 (LOW).

How severe is CVE-2021-32655?

This vulnerability has a CVSS 3.1 base score of 3.5, rated LOW. It can be exploited remotely over the network. Some level of privileges is required for exploitation.

How do I fix or remediate CVE-2021-32655?

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-2021-32655?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2021-32655 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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