CVE-2025-57883
Reflected XSS in GroupSession Allows Arbitrary Script Execution
Publication date: 2025-12-12
Last updated on: 2025-12-12
Assigner: JPCERT/CC
Description
Description
CVSS Scores
EPSS Scores
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Meta Information
Affected Vendors & Products
| Vendor | Product | Version / Range |
|---|---|---|
| groupsession | zion | * |
| groupsession | bycloud | * |
| groupsession | free_edition | * |
Helpful Resources
Exploitability
| CWE ID | Description |
|---|---|
| CWE-79 | The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users. |
Attack-Flow Graph
AI Powered Q&A
What immediate steps should I take to mitigate this vulnerability?
Users are advised to update GroupSession to the latest versions provided by the vendor to mitigate this vulnerability. [2]
Can you explain this vulnerability to me?
This vulnerability is a reflected cross-site scripting (XSS) issue in GroupSession software versions prior to 5.3.0 (Free edition), 5.3.3 (byCloud), and 5.3.2 (ZION). It allows an attacker to craft a malicious page or URL that, when accessed by a user, executes arbitrary scripts in the user's web browser.
How can this vulnerability impact me? :
The vulnerability can lead to arbitrary script execution in the user's browser, which may result in theft of user data, session hijacking, or other malicious actions performed on behalf of the user without their consent.