CVE-2025-30345

Public Exploit

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.

Categories

3.5
CVSS
Severity: Low
CVSS 3.1 •
EPSS 0.03%
Third-Party Advisory x41-dsec.de
Affected: Intevation OpenSlides
Published at:
Updated at:

References

Link Tags
https://www.x41-dsec.de/lab/advisories/x41-2025-001-OpenSlides third party advisory exploit

Frequently Asked Questions

What is the severity of CVE-2025-30345?
CVE-2025-30345 has been scored as a low severity vulnerability.
How to fix CVE-2025-30345?
To fix CVE-2025-30345, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2025-30345 being actively exploited in the wild?
It is possible that CVE-2025-30345 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2025-30345?
CVE-2025-30345 affects Intevation OpenSlides.
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