CVE-2025-53523

MEDIUM

GroupSession Free < 5.3.0, byCloud < 5.3.3, ZION < 5.3.2 - Stored Cross-Site Scripting

Title source: llm
STIX 2.1

Description

Stored cross-site scripting vulnerabilities exist in GroupSession Free edition prior to ver5.3.0, GroupSession byCloud prior to ver5.3.3, and GroupSession ZION prior to ver5.3.2. A logged-in user can prepare a malicious page or URL, and an arbitrary script may be executed on the web browser when another user accesses it.

References (2)

Core 2

Scores

CVSS v3 5.4
EPSS 0.0014
EPSS Percentile 3.9%
Attack Vector NETWORK
CVSS:3.0/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N

CISA SSVC

Vulnrichment
Exploitation none
Automatable no
Technical Impact partial

Details

CWE
CWE-79
Status published
Products (3)
groupsession/groupsession < 5.3.0
groupsession/groupsession < 5.3.2
groupsession/groupsession < 5.3.3
Published Dec 12, 2025
Tracked Since Feb 18, 2026