CVE-2025-30345

MEDIUM
4.1
CVSS Score
Published: March 21, 2025 at 12:00 AM UTC
Updated: June 17, 2026 at 09:08 AM UTC
2 products affected across 2 vendorsOpenSlidesOpenSlides

Using OpenSlides by Intevation?

Get instant alerts when new vulnerabilities affect OpenSlides - before attackers find them.

Real-time alertsTrack your software stackFree plan available
Severity
MEDIUM4.1
Exploit prediction
EPSS 0.3%
SSVC
PoC

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

v < 4.2.5
Affected range stops below 4.2.5, so it looks safe — our inference, not a vendor statement
v < 4.2.5
Affected range stops below 4.2.5, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet, and no fixed version or vendor advisory is recorded against it.

SSVC — Action Prioritization

SSVCPoCNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

Attack Vector
NETWORK
Complexity
LOW
Privileges
LOW
User Interaction
REQUIRED
Scope
CHANGED
Confidentiality
NONE
Integrity
LOW
Availability
NONE
Vector?

Quick Info

StatusANALYZED
CWE
CWE-116CWE-79

Get alerted

Stop reading CVE feeds looking for your own stack

Track the products you run and VulnTracker tells you when a new CVE affects them — with what is known about fixing it, and nothing about the rest.

Free plan, no card