What is CVE-2021-37631?

CVE-2021-37631 is a vulnerability in the Deck application of Nextcloud, which allows unauthorized users to gain access to certain information.

How does CVE-2021-37631 affect Nextcloud Deck?

CVE-2021-37631 affects Nextcloud Deck by allowing users to gain access to information they are not authorized to see.

What is the severity of CVE-2021-37631?

CVE-2021-37631 has a severity score of 6.5 (medium).

How do I fix CVE-2021-37631?

To fix CVE-2021-37631, you should update Nextcloud Deck to a version beyond 1.5.1.

Where can I find more information about CVE-2021-37631?

You can find more information about CVE-2021-37631 in the GitHub pull request, Nextcloud security advisories, and the HackerOne report linked in the references section.

Vulnerability/
CVE-2021-37631

medium

6.5

CWE

639

7/9/2021

4/8/2024

CVE-2021-37631: Circle can be accessed by non-Circle members in Nextcloud Deck

First published: Tue Sep 07 2021(Updated: )

Deck is an open source kanban style organization tool aimed at personal planning and project organization for teams integrated with Nextcloud. In affected versions the Deck application didn't properly check membership of users in a Circle. This allowed other users in the instance to gain access to boards that have been shared with a Circle, even if the user was not a member of the circle. It is recommended that Nextcloud Deck is upgraded to 1.5.1, 1.4.4 or 1.2.9. If you are unable to update it is advised to disable the Deck plugin.

Credit: security-advisories@github.com

Affected Software	Affected Version	How to fix
Nextcloud Deck	<1.2.9
Nextcloud Deck	>=1.3.0<1.4.4
Nextcloud Deck	>=1.5.0<1.5.1

Remedy

https://github.com/nextcloud/deck/pull/3217

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Reference Links

Frequently Asked Questions

What is CVE-2021-37631?
CVE-2021-37631 is a vulnerability in the Deck application of Nextcloud, which allows unauthorized users to gain access to certain information.
How does CVE-2021-37631 affect Nextcloud Deck?
CVE-2021-37631 affects Nextcloud Deck by allowing users to gain access to information they are not authorized to see.
What is the severity of CVE-2021-37631?
CVE-2021-37631 has a severity score of 6.5 (medium).
How do I fix CVE-2021-37631?
To fix CVE-2021-37631, you should update Nextcloud Deck to a version beyond 1.5.1.
Where can I find more information about CVE-2021-37631?
You can find more information about CVE-2021-37631 in the GitHub pull request, Nextcloud security advisories, and the HackerOne report linked in the references section.

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agent/weakness
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agent/tags
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agent/type
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vendor/nextcloud
canonical/nextcloud deck
version/nextcloud deck/1.3.0
version/nextcloud deck/1.5.0

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