CVE-2021-32678
low-risk
Published 2021-07-12
Nextcloud Server is a Nextcloud package that handles data storage. In versions prior to 19.0.13, 20.0.11, and 21.0.3, ratelimits are not applied to OCS API responses. This affects any OCS API controller (`OCSController`) using the `@BruteForceProtection` annotation. Risk depends on the installed applications on the Nextcloud Server, but could range from bypassing authentication ratelimits or spamming other Nextcloud users. The vulnerability is patched in versions 19.0.13, 20.0.11, and 21.0.3. No workarounds aside from upgrading are known to exist.
Do I need to act?
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0.30% chance of exploitation
EPSS score — low exploit probability
-
Not on CISA KEV list
No confirmed active exploitation reported to CISA
?
Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
3
CVSS 3.7/10
Low
NETWORK
/ HIGH complexity
Affected Products (3)
Affected Vendors
References (12)
Third Party Advisory
https://github.com/nextcloud/security-advisories/security/advisories/GHSA-48rx-3...
Permissions Required
https://hackerone.com/reports/1214158
Third Party Advisory
https://security.gentoo.org/glsa/202208-17
Third Party Advisory
https://github.com/nextcloud/security-advisories/security/advisories/GHSA-48rx-3...
Permissions Required
https://hackerone.com/reports/1214158
Third Party Advisory
https://security.gentoo.org/glsa/202208-17
23
/ 100
low-risk
Severity
13/34 · Low
Exploitability
1/34 · Minimal
Exposure
9/34 · Low