PT-2025-50872 · Unknown · Groupsession Bycloud+2

Published 2025-12-12 · Updated 2026-02-17 · CVE-2025-54407

Positive Technologies (AI Summary)

CVSS v3.1

6.1

Medium

Base vector

AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

Name of the Vulnerable Software and Affected Versions GroupSession Free edition versions prior to 5.3.0 GroupSession byCloud versions prior to 5.3.3 GroupSession ZION versions prior to 5.3.2

Description A stored cross-site scripting issue exists. If a user accesses a specially crafted page or URL, an arbitrary script may be executed in the user's web browser.

Recommendations Update GroupSession Free edition to version 5.3.0 or later. Update GroupSession byCloud to version 5.3.3 or later. Update GroupSession ZION to version 5.3.2 or later.

Fix

XSS

Weakness Enumeration

CWE-79

Related Identifiers

CVE-2025-54407

Affected Products

Groupsession Free Edition

Groupsession Zion

Groupsession Bycloud

References · 7

• https://groupsession.jp/info/info-news/security20251208 · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2025-54407 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2025-54407 · Security Note
• https://jvn.jp/en/jp/JVN19940619 · Note
• https://t.me/cveNotify/152195 · Telegram Post
• https://t.me/CVEtracker/39571 · Telegram Post
• https://t.me/cveNotify/145549 · Telegram Post