CVE-2021-32741
MEDIUMNextcloud Server <19.0.13, <20.011, <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, 20.011, and 21.0.3, there was a lack of ratelimiting on the public share link mount endpoint. This may have allowed an attacker to enumerate potentially valid share tokens. The issue was fixed in versions 19.0.13, 20.0.11, and 21.0.3. There are no known workarounds.
References (3)
Core 3
Core References
Third Party Advisory x_refsource_confirm
https://github.com/nextcloud/security-advisories/security/advisories/GHSA-crvj-vmf7-xrvr
Patch, Third Party Advisory x_refsource_misc
https://github.com/nextcloud/server/pull/26958
Permissions Required x_refsource_misc
https://hackerone.com/reports/1192144
Scores
CVSS v3
5.3
EPSS
0.0132
EPSS Percentile
67.1%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
Details
CWE
CWE-799
Status
published
Products (1)
nextcloud/nextcloud_server
< 19.0.13
Published
Jul 12, 2021
Tracked Since
Feb 18, 2026