CVE-2025-53523
Last modified
CVE-2025-53523 is a medium-severity vulnerability rated 5.4/10 on the CVSS scale. Stored cross-site scripting vulnerabilities exist in GroupSession Free edition prior to ver5.3.0, GroupSession byCloud prior to ver5.3.3, and GroupSession ZION prior to ver5.3.2. A logged-in user can prepare a malicious page or URL, and an arbitrary script may be executed on the web browser when another user accesses it.. EPSS estimates a 0.14% chance of exploitation in the next 30 days.
Description
Stored cross-site scripting vulnerabilities exist in GroupSession Free edition prior to ver5.3.0, GroupSession byCloud prior to ver5.3.3, and GroupSession ZION prior to ver5.3.2. A logged-in user can prepare a malicious page or URL, and an arbitrary script may be executed on the web browser when another user accesses it.
Metrics
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Groupsession | Groupsession | < 5.3.0 |
| Groupsession | Groupsession | < 5.3.2 |
| Groupsession | Groupsession | < 5.3.3 |
References
- https://groupsession.jp/info/info-news/security20251208Vendor Advisory
- https://jvn.jp/en/jp/JVN19940619/Third Party Advisory
Timeline
- Published
- Last Modified
- Status
- Analyzed
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How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
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