CVE-2025-30345

MEDIUM EPSS 17.3%
Published Mar 21, 20251y ago · Modified Jun 17, 20262w ago
4.1 CVSS 3.1
Medium
Find Similar
Published Mar 21, 2025 1y ago
Last Modified Jun 17, 2026 2w ago

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.

CVSS Details

Base Score
4.1
Exploitability
2.3
Impact
1.4
Vector string
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:N/I:L/A:N
Attack Vector Network
Attack Complexity Low
Privileges Required Low
User Interaction Required
Scope Changed
Confidentiality None
Integrity Low
Availability None

Threat Intelligence

EPSS Exploit Probability
17.3% percentile
Exploit & Patch Status
Public Exploit Known
No Patch Available

Weaknesses 2

CWE-116
CWE-79 Cross-site Scripting Injection

Affected Products 1

VendorProductVersionRange
openslidesopenslides* <4.2.5

References 1

  • x41-dsec.de https://www.x41-dsec.de/lab/advisories/x41-2025-001-OpenSlides
    ExploitThird Party Advisory

Remediation

No remediation data recorded yet

Check vendor advisories and the NVD entry for patch availability.