CVE-2021-37629

Name: CVE-2021-37629
Creator: NVD / NIST
Published: 2021-09-07T21:15:08.807+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 5.3/10EPSS 1.34%

Last modified Jun 17, 2026

CVE-2021-37629 is a medium-severity vulnerability rated 5.3/10 on the CVSS scale. Nextcloud Richdocuments is an open source collaborative office suite. In affected versions there is a lack of rate limiting on the Richdocuments OCS endpoint. EPSS estimates a 1.34% chance of exploitation in the next 30 days.

Description

Nextcloud Richdocuments is an open source collaborative office suite. In affected versions there is a lack of rate limiting on the Richdocuments OCS endpoint. This may have allowed an attacker to enumerate potentially valid share tokens. It is recommended that the Nextcloud Richdocuments app is upgraded to either 3.8.4 or 4.2.1 to resolve. For users unable to upgrade it is recommended that the Richdocuments application be disabled.

Metrics

CVSS 3.1

5.3/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

EPSS Probability

1.34%

67.6th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Nextcloud	Richdocuments	< 3.8.4
Nextcloud	Richdocuments	>= 4.0.0, < 4.2.1

References

https://github.com/nextcloud/richdocuments/pull/1663Third Party Advisory
https://github.com/nextcloud/security-advisories/security/advisories/GHSA-gvvr-h36p-8mjxThird Party Advisory
https://hackerone.com/reports/1258750Permissions Required, Third Party Advisory
https://github.com/nextcloud/richdocuments/pull/1663Third Party Advisory
https://github.com/nextcloud/security-advisories/security/advisories/GHSA-gvvr-h36p-8mjxThird Party Advisory
https://hackerone.com/reports/1258750Permissions Required, Third Party Advisory

Timeline

Published: Sep 7, 2021
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2021-37629?

How severe is CVE-2021-37629?

CVE-2021-37629 has a CVSS score of 5.3/10 (MEDIUM severity). The EPSS model estimates a 1.34% probability of exploitation in the next 30 days.

How do I fix CVE-2021-37629?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2021-37629?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST