CVE-2025-30342
MEDIUM EPSS 14.7%
Published Mar 21, 20251y ago · Modified Jun 17, 20262w ago
6.1 CVSS 3.1
Published Mar 21, 2025 1y ago
Last Modified Jun 17, 2026 2w ago
Description
An XSS issue was discovered in OpenSlides before 4.2.5. When submitting descriptions such as Moderator Notes or Agenda Topics, an editor is shown that allows one to format the submitted text. This allows insertion of various HTML elements. When trying to insert a SCRIPT element, it is properly encoded when reflected; however, adding attributes to links is possible, which allows the injection of JavaScript via the onmouseover attribute and others. When a user moves the mouse over such a prepared link, JavaScript is executed in that user's session.
CVSS Details
Base Score
Exploitability
Impact
Vector string
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N Attack Vector Network
Attack Complexity Low
Privileges Required None
User Interaction Required
Scope Changed
Confidentiality Low
Integrity Low
Availability None
Threat Intelligence
EPSS Exploit Probability
14.7% percentile
Exploit & Patch Status
Public Exploit Known
No Patch Available
Weaknesses 1
CWE-79 Cross-site Scripting Injection
Affected Products 1
| Vendor | Product | Version | Range |
|---|---|---|---|
| openslides | openslides | * | <4.2.5 |
References 1
- x41-dsec.de https://www.x41-dsec.de/lab/advisories/x41-2025-001-OpenSlides
Remediation
No remediation data recorded yet
Check vendor advisories and the NVD entry for patch availability.