Nextcloud Calendar
10 CVEs affecting Nextcloud Calendar. Latest disclosed: 2026-06-01. Critical: 0, High: 0.
| CVE | Severity | Score | Published | Summary |
|---|---|---|---|---|
CVE-2025-66550 | Medium | 5.7 | 2025-12-05 | Nextcloud Calendar is a calendar app for Nextcloud. Prior to 4.7.17 and 5.2.4, when a malicious user creates a calendar event with a crafted attachment that li… |
CVE-2022-24838 | Medium | 5.3 | 2022-04-11 | Nextcloud Calendar is a calendar application for the nextcloud framework. SMTP Command Injection in Appointment Emails via Newlines: as newlines and special ch… |
CVE-2025-66511 | Medium | 4.8 | 2025-12-05 | Nextcloud Calendar is a calendar app for Nextcloud. Prior to 6.0.3, the Calendar app generates participant tokens for meeting proposals using a hash function… |
CVE-2018-3763 | Medium | 4.8 | 2018-07-05 | In Nextcloud Calendar before 1.5.8 and 1.6.1, a missing sanitization of search results for an autocomplete field could lead to a stored XSS requiring user-inte… |
CVE-2024-37316 | Medium | 4.6 | 2024-06-14 | Nextcloud Calendar is a calendar app for Nextcloud. Authenticated users could create an event with manipulated attachment data leading to a bad redirect for pa… |
CVE-2026-45286 | Medium | 4.3 | 2026-06-01 | Nextcloud is an open source content collaboration platform. From versions 5.5.13 to before 5.5.17, and 6.2.0 to before 6.2.3, an authenticated user can enumera… |
CVE-2023-45150 | Medium | 4.3 | 2023-10-16 | Nextcloud calendar is a calendar app for the Nextcloud server platform. Due to missing precondition checks the server was trying to validate strings of any len… |
CVE-2023-48308 | Low | 3.5 | 2023-12-22 | Nextcloud/Cloud is a calendar app for Nextcloud. An attacker can gain access to stacktrace and internal paths of the server when generating an exception while… |
CVE-2025-66546 | Low | 3.3 | 2025-12-05 | Nextcloud Calendar is a calendar app for Nextcloud. Prior to 4.7.19, 5.5.6, and 6.0.1, the calendar app allowed blindly booking appointments with a squential I… |
CVE-2023-33183 | Low | 2.6 | 2023-05-30 | Calendar app for Nextcloud easily sync events from various devices with your Nextcloud. Some internal paths of the website are disclosed when the SMTP server i… |