CVE-2025-66284 describes stored cross-site scripting (XSS) vulnerabilities affecting GroupSession Free, byCloud, and ZION editions prior to version 5.7.1. A logged-in attacker can craft a malicious page or URL, leading to arbitrary script execution in another user's web browser upon access. The vulnerability has a CVSS score of 5.4 (Medium), indicating a network-based attack with low privileges and user interaction, potentially impacting confidentiality and integrity. Currently, there is no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
< 5.7.1CPE matchmatch criteria | cpe:2.3:a:groupsession:groupsession:*:*:*:*:bycloud:*:*:* | ||
< 5.7.1CPE matchmatch criteria | cpe:2.3:a:groupsession:groupsession:*:*:*:*:free:*:*:* | ||
< 5.7.1CPE matchmatch criteria | cpe:2.3:a:groupsession:groupsession:*:*:*:*:zion:*:*:* |
CVSS version used by this source: 4.0
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:A/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.0 Bluesky, 0.0 Mastodon, and 0.1 GitHub mentions.
No media coverage found for this CVE.
The average CVE in this peer group has 0.0 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.
Remediation records are not available for this CVE.