CVE-2021-37629

Lack of ratelimit on Richdocuments OCS endpoint in nextcloud

MEDIUM
5.3
CVSS Score
Published: September 7, 2021 at 08:25 PM UTC
Updated: June 17, 2026 at 04:00 AM UTC
1 product affected across 1 vendorRichdocuments

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Severity
MEDIUM5.3
Exploit prediction
EPSS 1%

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

v < 3.8.44.0.0 ≤ v < 4.2.1
Affected range stops below 3.8.4, so it looks safe — our inference, not a vendor statement
Affected range stops below 4.2.1, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet, and no fixed version or vendor advisory is recorded against it.

References (3)

x_refsource_MISCPermissions RequiredThird Party Advisory
https://hackerone.com/reports/1258750

CVSS

5.3MEDIUMGitHub_M
Attack Vector
NETWORK
Complexity
LOW
Privileges
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
LOW
Integrity
NONE
Availability
NONE
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-200CWE-770

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