CVE-2021-20786 describes a Cross-Site Request Forgery (CSRF) vulnerability affecting GroupSession Free (versions 2.2.0 to prior to 5.1.0), GroupSession byCloud (versions 3.0.3 to prior to 5.1.0), and GroupSession ZION (versions 3.0.3 to prior to 5.1.0). This flaw allows a remote attacker to hijack administrator authentication through a specially crafted URL. The vulnerability has a CVSS v3.1 score of 4.3 (Medium), indicating a network-based attack with low attack complexity, requiring user interaction, and resulting in low integrity impact (e.g., unauthorized actions on behalf of the administrator). There is no confidentiality or availability impact. Currently, there is no evidence of active exploitation, and no public exploit code is available in Metasploit, Nuclei, or ExploitDB. Community discussion and media coverage for this CVE are minimal, suggesting low public awareness.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
>= 2.20, < 5.1.0CPE matchmatch criteria | cpe:2.3:a:groupsession:groupsession:*:*:*:*:free:*:*:* | ||
>= 3.0.3, < 5.1.0CPE matchmatch criteria | cpe:2.3:a:groupsession:groupsession_bycloud:*:*:*:*:*:*:*:* | ||
>= 3.0.3, < 5.1.0CPE matchmatch criteria | cpe:2.3:a:groupsession:groupsession_zion:*:*:*:*:*:*:*:* |
CVSS version used by this source: 3.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N
The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.1 GitHub mentions.
No media coverage found for this CVE.
The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.
Remediation records are not available for this CVE.