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CVE-2023-32320

8.7 · HIGH

Nextcloud Server is a data storage system for Nextcloud, a self-hosted productivity platform.

Published Jun 22, 2023CWE-307EPSS 0.87%

Overview

CVE-2023-32320 is a high-severity vulnerability. It was published on June 22, 2023 and has a CVSS 3.1 base score of 8.7 (HIGH).

This vulnerability has a CVSS 3.1 base score of 8.7, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

Technical description

Nextcloud Server is a data storage system for Nextcloud, a self-hosted productivity platform. When multiple requests are sent in parallel, all of them were executed even if the amount of faulty requests succeeded the limit by the time the response was sent to the client. This allowed someone to send as many requests the server could handle in parallel to bruteforce protected details instead of the configured limit, default 8. Nextcloud Server versions 25.0.7 and 26.0.2 and Nextcloud Enterprise Server versions 21.0.9.12, 22.2.10.12, 23.0.12.7, 24.0.12.2, 25.0.7 and 26.0.2 contain patches for this issue.

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-qphh-6xh7-vffgGitHubgithub.com/nextcloud/server/pull/38274Refhackerone.com/reports/1918525GitHubgithub.com/nextcloud/security-advisories/security/advisories/GHSA-qphh-6xh7-vffgGitHubgithub.com/nextcloud/server/pull/38274Refhackerone.com/reports/1918525

How CyberStrike helps

Frequently asked questions

What is CVE-2023-32320?

CVE-2023-32320 is a high-severity vulnerability. It was published on June 22, 2023 and has a CVSS 3.1 base score of 8.7 (HIGH).

How severe is CVE-2023-32320?

This vulnerability has a CVSS 3.1 base score of 8.7, 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-2023-32320?

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-2023-32320?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2023-32320 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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