CVE-2024-22402: Improper handling of request URLs in Nextcloud Guests app allows guest users to bypass app allowlist
Description
Nextcloud guests app is a utility to create guest users which can only see files shared with them. In affected versions users were able to load the first page of apps they were actually not allowed to access. Depending on the selection of apps installed this may present a permissions bypass. It is recommended that the Guests app is upgraded to 2.4.1, 2.5.1 or 3.0.1. There are no known workarounds for this vulnerability.
Classification
CVE ID: CVE-2024-22402
CVSS Base Severity: MEDIUM
CVSS Base Score: 5.4
CVSS Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N
Problem Types
CWE-281: Improper Preservation of PermissionsAffected Products
Vendor: nextcloud
Product: security-advisories
Exploit Prediction Scoring System (EPSS)
EPSS Score: 0.24% (probability of being exploited)
EPSS Percentile: 47.69% (scored less or equal to compared to others)
EPSS Date: 2025-06-14 (when was this score calculated)
Stakeholder-Specific Vulnerability Categorization (SSVC)
SSVC Exploitation: none
SSVC Technical Impact: partial
SSVC Automatable: false
References
https://nvd.nist.gov/vuln/detail/CVE-2024-22402https://github.com/nextcloud/security-advisories/security/advisories/GHSA-v3qw-7vgv-2fxj
https://github.com/nextcloud/guests/pull/1082
https://hackerone.com/reports/2251074