CVE-2021-20786
Cross-site request forgery (CSRF) vulnerability in GroupSession (GroupSession Free edition from...
CVE-2021-20786 is a medium vulnerability (CVSS 4.3) in Groupsession, published July 28, 2021. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.45%, the 39th percentile. No source names a fixed version.
- Severity
- 4.3 MediumCVSS 3.1, NVD
- Exploit chance
- 0.45%EPSS, 39th percentile
- Exploitation
- None knownNot on CISA’s or ENISA’s lists
- Fixed in
- No fix listedNo source names one
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.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- None
- User interaction
- Required
What an attacker can affect
- Confidentiality
- None
- Integrity
- Low
- Availability
- None
Exploit likelihood
Affected products
What each source reports
NVD Score used
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.
- Record
CVE-2021-20786- CVSS 3.1
- 4.3 Medium
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N - CVSS 2.0
- 4.3 Medium
AV:N/AC:M/Au:N/C:N/I:P/A:N - Weakness
- CWE-352
- Updated
- 2026-11-02
CVE ListNo score
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.
- Record
CVE-2021-20786- Updated
- 2026-11-02
EUVDEUVD-2021-8198No score
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.
- Record
EUVD-2021-8198- Updated
- 2026-11-03
GitHub AdvisoriesGHSA-crxm-j8cj-fgm7No score
Cross-site request forgery (CSRF) vulnerability in GroupSession (GroupSession Free edition from...
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.
- Record
GHSA-crxm-j8cj-fgm7- Weakness
- CWE-352
- Updated
- 2026-11-02
History
| Recorded | Changed | Sources |
|---|---|---|
| facts | ||
| aliases | EUVD | |
| first indexed | CVE List, GitHub Advisories, NVD |
Dates are when Every CVE recorded each change. Upstream dates may differ.