VULNERABILITY INTELLIGENCE

CVE-2021-20875

CVSS score6.1 MEDIUM

EPSS probability0.85%

CISA KEVNot currently listed

Published2021-12-24

Last modified2026-06-17

CVSS vectorCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

Description

Open redirect vulnerability in GroupSession Free edition ver5.1.1 and earlier, GroupSession byCloud ver5.1.1 and earlier, and GroupSession ZION ver5.1.1 and earlier allows a remote unauthenticated attacker to redirect users to arbitrary web sites and conduct phishing attacks by having a user to access a specially crafted URL.

Weakness classification

nvd@nist.gov: CWE-601

Primary references

vultures@jpcert.or.jp — Vendor Advisory
vultures@jpcert.or.jp — Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108 — Vendor Advisory
af854a3a-2127-422b-91ae-364da2661108 — Third Party Advisory