CVE-2021-32678
LOWNextcloud Server <19.0.13, 20.0.11, 21.0.3 - Info Disclosure
Title source: llmDescription
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.
References (6)
Core 6
Core References
Third Party Advisory x_refsource_confirm
https://github.com/nextcloud/security-advisories/security/advisories/GHSA-48rx-3gmf-g74j
Patch, Third Party Advisory x_refsource_misc
https://github.com/nextcloud/server/pull/27329
Permissions Required x_refsource_misc
https://hackerone.com/reports/1214158
Mailing List, Third Party Advisory vendor-advisory
x_refsource_fedora
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/J63NBVPR2AQCAWRNDOZSGRY5II4WS2CZ/
Mailing List, Third Party Advisory vendor-advisory
x_refsource_fedora
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/BVZS26RDME2DYTKET5AECRIZDFUGR2AZ/
Third Party Advisory vendor-advisory
x_refsource_gentoo
https://security.gentoo.org/glsa/202208-17
Scores
CVSS v3
3.7
EPSS
0.0137
EPSS Percentile
68.3%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N
Details
CWE
CWE-799
CWE-307
Status
published
Products (3)
fedoraproject/fedora
33
fedoraproject/fedora
34
nextcloud/nextcloud_server
< 19.0.13
Published
Jul 12, 2021
Tracked Since
Feb 18, 2026