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CVE-2021-32726

7.1 · HIGH

Nextcloud Server is a Nextcloud package that handles data storage.

Published Jul 12, 2021CWE-708EPSS 1.78%

Overview

CVE-2021-32726 is a high-severity vulnerability. It was published on July 12, 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

Nextcloud Server is a Nextcloud package that handles data storage. In versions prior to 19.0.13, 20.011, and 21.0.3, webauthn tokens were not deleted after a user has been deleted. If a victim reused an earlier used username, the previous user could gain access to their account. The issue was fixed in versions 19.0.13, 20.0.11, and 21.0.3. There are no known workarounds.

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-6qr9-c846-j8mgGitHubgithub.com/nextcloud/server/pull/27532Refhackerone.com/reports/1202590Refsecurity.gentoo.org/glsa/202208-17GitHubgithub.com/nextcloud/security-advisories/security/advisories/GHSA-6qr9-c846-j8mgGitHubgithub.com/nextcloud/server/pull/27532Refhackerone.com/reports/1202590Refsecurity.gentoo.org/glsa/202208-17

How CyberStrike helps

Frequently asked questions

What is CVE-2021-32726?

CVE-2021-32726 is a high-severity vulnerability. It was published on July 12, 2021 and has a CVSS 3.1 base score of 7.1 (HIGH).

How severe is CVE-2021-32726?

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-2021-32726?

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-2021-32726?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2021-32726 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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