Disclosure summary
In GroupSession Free edition prior to ver5.7.1, GroupSession byCloud prior to ver5.7.1, and GroupSession ZION prior to ver5.7.1, "External page display restriction" is set to "Do not limit" in the initial configuration. With this configuration, the user may be redirected to an arbitrary website when accessing a specially crafted URL.
Source-reported weakness categories
CWE-1188
Source-specific records & product guidance
Sources retain their own attribution and scoring. Follow the original record to confirm affected versions, fixed releases, and configuration conditions.
NIST National Vulnerability Database · NVD-CVE-2025-64781
Open original source · Updated Oct 07, 2026
Only CPE matches marked vulnerable=true are indexed. AND/OR platform conditions must be checked in the original NVD record.
| Vendor | Product / association | Version / bounds |
|---|---|---|
| groupsession | groupsession | * {"versionEndExcluding":"5.7.1"} |
| groupsession | groupsession | * {"versionEndExcluding":"5.7.1"} |
| groupsession | groupsession | * {"versionEndExcluding":"5.7.1"} |
Original records & references
- NIST NVD record
- CVE Program record
- groupsession.jp — Vendor Advisory
- jvn.jp — Third Party Advisory
PUBLISHED 2025-12-12T00:16:11-05:00
MODIFIED 2026-10-07T16:10:01-04:00
INGESTED 2026-10-08T12:35:47-04:00