Calendar

4 CVEs product

Monthly

CVE-2026-29052 MEDIUM This Month

HumHub Calendar module versions prior to 1.8.11 contain a stored XSS vulnerability in Event Types that allows attackers to inject malicious scripts viewed by users accessing events created by administrative accounts. An attacker with event creation privileges can execute arbitrary JavaScript in the browsers of users viewing affected events, potentially compromising session tokens or sensitive information. No patch is currently available for affected installations.

XSS Calendar
NVD GitHub
CVSS 3.1
6.1
EPSS
0.0%
CVE-2025-66550 MEDIUM POC PATCH This Month

A security vulnerability in Nextcloud Calendar (CVSS 5.7). Risk factors: public PoC available. Vendor patch is available.

Information Disclosure Calendar Nextcloud
NVD GitHub
CVSS 3.1
5.7
EPSS
0.0%
CVE-2025-66511 MEDIUM PATCH This Month

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, allowing an attacker to compute valid participant tokens, which allowed them to request details and submit dates in meeting proposals. The tokens are not purely random generated. This vulnerability is fixed in 6.0.3.

Information Disclosure Calendar Nextcloud
NVD GitHub
CVSS 3.1
4.8
EPSS
0.0%
CVE-2025-21035 MEDIUM Monitor

Improper access control in Samsung Calendar prior to version 12.5.06.5 in Android 14 and 12.6.01.12 in Android 15 allows physical attackers to access data across multiple user profiles. Rated medium severity (CVSS 4.6), this vulnerability is no authentication required, low attack complexity. No vendor patch available.

Samsung Google Information Disclosure Calendar Android
NVD
CVSS 3.1
4.6
EPSS
0.0%
CVE-2026-29052
EPSS 0% CVSS 6.1
MEDIUM This Month

HumHub Calendar module versions prior to 1.8.11 contain a stored XSS vulnerability in Event Types that allows attackers to inject malicious scripts viewed by users accessing events created by administrative accounts. An attacker with event creation privileges can execute arbitrary JavaScript in the browsers of users viewing affected events, potentially compromising session tokens or sensitive information. No patch is currently available for affected installations.

XSS Calendar
NVD GitHub
CVE-2025-66550
EPSS 0% CVSS 5.7
MEDIUM POC PATCH This Month

A security vulnerability in Nextcloud Calendar (CVSS 5.7). Risk factors: public PoC available. Vendor patch is available.

Information Disclosure Calendar Nextcloud
NVD GitHub
CVE-2025-66511
EPSS 0% CVSS 4.8
MEDIUM PATCH This Month

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, allowing an attacker to compute valid participant tokens, which allowed them to request details and submit dates in meeting proposals. The tokens are not purely random generated. This vulnerability is fixed in 6.0.3.

Information Disclosure Calendar Nextcloud
NVD GitHub
CVE-2025-21035
EPSS 0% CVSS 4.6
MEDIUM Monitor

Improper access control in Samsung Calendar prior to version 12.5.06.5 in Android 14 and 12.6.01.12 in Android 15 allows physical attackers to access data across multiple user profiles. Rated medium severity (CVSS 4.6), this vulnerability is no authentication required, low attack complexity. No vendor patch available.

Samsung Google Information Disclosure +2
NVD

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