What is CVE-2025-30345?

CVE-2025-30345 is a low-severity vulnerability in Intevation Openslides, classified under Improper Encoding or Escaping of Output. CVSS score: 3.5/10. Published 2025-03-21.

How severe is CVE-2025-30345?

Low severity. CVSS v3 base score is 3.5 out of 10.

XSS in Intevation Openslides

CVE-2025-30345

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.

EPSS: 0.003 (18.6th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 3.5 (Low). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:L/A:N.

Affected products

Intevation Openslides — versions 0
Openslides

Weakness classification (CWE)

References

cve@mitre.org (Exploit, Third Party Advisory)

Frequently asked questions

What is CVE-2025-30345?: CVE-2025-30345 is a low-severity vulnerability in Intevation Openslides, classified under Improper Encoding or Escaping of Output. CVSS score: 3.5/10. Published 2025-03-21.
How severe is CVE-2025-30345?: Low severity. CVSS v3 base score is 3.5 out of 10.