Vulnerability Details : CVE-2021-20875
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.
Vulnerability category: Open redirect
Products affected by CVE-2021-20875
- cpe:2.3:a:groupsession:groupsession:*:*:*:*:zion:*:*:*
- cpe:2.3:a:groupsession:groupsession:*:*:*:*:free:*:*:*
- cpe:2.3:a:groupsession:groupsession:*:*:*:*:cloud:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2021-20875
0.13%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 49 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2021-20875
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
|---|---|---|---|---|---|---|
|
5.8
|
MEDIUM | AV:N/AC:M/Au:N/C:P/I:P/A:N |
8.6
|
4.9
|
NIST | |
|
6.1
|
MEDIUM | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N |
2.8
|
2.7
|
NIST |
CWE ids for CVE-2021-20875
-
The web application accepts a user-controlled input that specifies a link to an external site, and uses that link in a redirect.Assigned by: nvd@nist.gov (Primary)
References for CVE-2021-20875
-
https://jvn.jp/en/jp/JVN79798166/index.html
JVN#79798166: Multiple vulnerabilities in GroupSessionThird Party Advisory
-
https://groupsession.jp/info/info-news/security20211220
Vendor Advisory
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