CVE-2021-32741

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.

• CWE-799

• https://github.com/nextcloud/security-advisories/security/advisories/GHSA-crvj-vmf7-xrvrThird Party Advisory
• https://github.com/nextcloud/server/pull/26958Patch, Third Party Advisory
• https://hackerone.com/reports/1192144Permissions Required
• https://github.com/nextcloud/security-advisories/security/advisories/GHSA-crvj-vmf7-xrvrThird Party Advisory
• https://github.com/nextcloud/server/pull/26958Patch, Third Party Advisory
• https://hackerone.com/reports/1192144Permissions Required

Published

Jul 12, 2021

Last Modified

Jun 17, 2026

Status

Modified

• How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
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