An issue was discovered in OpenSlides before 4.2.5. When creating new chats via the chat_group.create action, the user is able to specify the name of the chat. Some HTML elements such as SCRIPT are filtered, whereas others are not. In most cases, HTML entities are encoded properly, but not when deleting chats or deleting messages in these chats. This potentially allows attackers to interfere with the layout of the rendered website, but it is unlikely that victims would click on deleted chats or deleted messages.
History

Fri, 21 Mar 2025 15:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'poc', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Fri, 21 Mar 2025 06:15:00 +0000

Type Values Removed Values Added
Weaknesses CWE-116
Metrics cvssV3_1

{'score': 3.5, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:L/A:N'}


Fri, 21 Mar 2025 05:45:00 +0000

Type Values Removed Values Added
Description An issue was discovered in OpenSlides before 4.2.5. When creating new chats via the chat_group.create action, the user is able to specify the name of the chat. Some HTML elements such as SCRIPT are filtered, whereas others are not. In most cases, HTML entities are encoded properly, but not when deleting chats or deleting messages in these chats. This potentially allows attackers to interfere with the layout of the rendered website, but it is unlikely that victims would click on deleted chats or deleted messages.
References

cve-icon MITRE

Status: PUBLISHED

Assigner: mitre

Published: 2025-03-21T00:00:00.000Z

Updated: 2025-03-21T15:04:51.998Z

Reserved: 2025-03-21T00:00:00.000Z

Link: CVE-2025-30345

cve-icon Vulnrichment

Updated: 2025-03-21T15:04:39.239Z

cve-icon NVD

Status : Received

Published: 2025-03-21T06:15:27.090

Modified: 2025-03-21T06:15:27.090

Link: CVE-2025-30345

cve-icon Redhat

No data.