CVE-2023-35172: Nextcloud Server password reset endpoint is not brute force protected
Description
NextCloud Server and NextCloud Enterprise Server provide file storage for Nextcloud, a self-hosted productivity platform. In NextCloud Server versions 25.0.0 until 25.0.7 and 26.0.0 until 26.0.2 and Nextcloud Enterprise Server versions 21.0.0 until 21.0.9.12, 22.0.0 until 22.2.10.12, 23.0.0 until 23.0.12.7, 24.0.0 until 24.0.12.2, 25.0.0 until 25.0.7, and 26.0.0 until 26.0.2, an attacker can bruteforce the password reset links. Nextcloud Server n 25.0.7 and 26.0.2 and Nextcloud Enterprise Server 21.0.9.12, 22.2.10.12, 23.0.12.7, 24.0.12.2, 25.0.7, and 26.0.2 contain a patch for this issue. No known workarounds are available.
Classification
CVE ID: CVE-2023-35172
CVSS Base Severity: HIGH
CVSS Base Score: 8.7
Affected Products
Vendor: nextcloud
Product: security-advisories
Exploit Prediction Scoring System (EPSS)
EPSS Score: 0.11% (probability of being exploited)
EPSS Percentile: 46.12% (scored less or equal to compared to others)
EPSS Date: 2025-02-03 (when was this score calculated)
References
https://github.com/nextcloud/security-advisories/security/advisories/GHSA-mjf5-p765-qmr6https://github.com/nextcloud/server/pull/38267
https://hackerone.com/reports/1987062