CVE-2021-37629 json
Lack of ratelimit on Richdocuments OCS endpoint in nextcloud
published 2021-09-07 5 y ago modified 2026-06-17 4 mo ago also EUVD-2021-24185
- cvss
- 5.3
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 1.4%
- EPSS 1.4% chance of exploitation in 30 days, percentile 72%
- public exploits
- 0
- none known
Summary
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.
Patch / fix
Exploit prediction
1.38% chance of exploitation in the next 30 days, higher than 72% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 5.3 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N |
| NVD | 3.1 | 5.3 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N |
| NVD | 2.0 | 5.0 | AV:N/AC:L/Au:N/C:P/I:N/A:N |
Affected products
- nextcloud security-advisories
Classification
References
-
github.com
/nextcloud/richdocuments/pull/1663
third-party-advisory
-
github.com
/nextcloud/security-advisories/security/advisories/GHSA-gvvr-h36p-8mjx
third-party-advisory
-
hackerone.com
/reports/1258750
permissions-required, third-party-advisory
Sources
- CVE List CVE-2021-37629
- NVD CVE-2021-37629
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