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Critical severity9.8NVD Advisory· Published Jun 11, 2021· Updated Jun 17, 2026

CVE-2021-22915

CVE-2021-22915

Description

Nextcloud server before 19.0.11, 20.0.10, 21.0.2 is vulnerable to brute force attacks due to lack of inclusion of IPv6 subnets in rate-limiting considerations. This could potentially result in an attacker bypassing rate-limit controls such as the Nextcloud brute-force protection.

AI Insight

LLM-synthesized narrative grounded in this CVE's description and references.

Affected products

6
  • Nextcloud/Server
    cpe:2.3:a:nextcloud:nextcloud_server:*:*:*:*:*:*:*:*
    Range: <19.0.11
  • Fedoraproject/Fedora2 versions
    cpe:2.3:o:fedoraproject:fedora:33:*:*:*:*:*:*:*+ 1 more
    • cpe:2.3:o:fedoraproject:fedora:33:*:*:*:*:*:*:*
    • cpe:2.3:o:fedoraproject:fedora:34:*:*:*:*:*:*:*
  • Nextcloud/Nextcloudllm-fuzzy2 versions
    <19.0.11, <20.0.10, <21.0.2+ 1 more
    • (no CPE)range: <19.0.11, <20.0.10, <21.0.2
    • (no CPE)range: Fixed in 19.0.11, 20.0.10, 21.0.2
  • Nextcloud/Nextcloud Enterprise Serverllm-fuzzy
    Range: <19.0.11, <20.0.10, <21.0.2

Patches

Vulnerability mechanics

References

4

News mentions

0

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