Not a U.S. government website. NDD is an independent vulnerability database by Volerion and is not affiliated with or endorsed by NIST or NVD.
VOLERION
Volerion Security Research

NOT DEFERRED DATABASE

VULNERABILITIES

CVE-2021-20786 Details

Description

Cross-site request forgery (CSRF) vulnerability in GroupSession (GroupSession Free edition from ver2.2.0 to the version prior to ver5.1.0, GroupSession byCloud from ver3.0.3 to the version prior to ver5.1.0, and GroupSession ZION from ver3.0.3 to the version prior to ver5.1.0) allows a remote attacker to hijack the authentication of administrators via a specially crafted URL.

Metrics

CVSS 3.x Severity and Vector Strings:

References to Advisories, Solutions, and Tools

By selecting these links, you will be leaving this site. These are references gathered from the official CVE record and are not endorsed by Volerion.

Weakness Enumeration

CWE-IDCWE NameSource
CWE-352Cross-Site Request Forgery (CSRF)[email protected]

Affected Products

ProductVersions
groupsession groupsession
>= 2.20, < 5.1.0

CPE

  • cpe:2.3:a:groupsession:groupsession:*:*:*:*:free:*:*:*

Remediation

  • No remediation found in references.
groupsession groupsession bycloud
>= 3.0.3, < 5.1.0

CPE

  • cpe:2.3:a:groupsession:groupsession_bycloud:*:*:*:*:*:*:*:*

Remediation

  • No remediation found in references.
groupsession groupsession zion
>= 3.0.3, < 5.1.0

CPE

  • cpe:2.3:a:groupsession:groupsession_zion:*:*:*:*:*:*:*:*

Remediation

  • No remediation found in references.

Change History

4 change records found show changes


QUICK INFO

CVE Dictionary Entry:
CVE-2021-20786
NVD Published Date:
Jul 30, 2021
NVD Last Modified:
Jun 17, 2026
Source:
[email protected]
CVE-2021-20786 Details - Not Deferred