CVE-2025-57883
Unknown Unknown - Not Provided
Reflected XSS in GroupSession Allows Arbitrary Script Execution

Publication date: 2025-12-12

Last updated on: 2025-12-12

Assigner: JPCERT/CC

Description
Reflected cross-site scripting vulnerability exists in GroupSession Free edition prior to ver5.3.0, GroupSession byCloud prior to ver5.3.3, and GroupSession ZION prior to ver5.3.2. If a user accesses a crafted page or URL, an arbitrary script may be executed on the web browser of the user.
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Meta Information
Published
2025-12-12
Last Modified
2025-12-12
Generated
2026-06-16
AI Q&A
2025-12-12
EPSS Evaluated
2026-06-15
NVD
CVE-2025-57883
EUVD
EUVD-2025-203024
Affected Vendors & Products
Showing 3 associated CPEs
Vendor Product Version / Range
groupsession zion *
groupsession bycloud *
groupsession free_edition *
Helpful Resources
Exploitability
CWE
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KEV
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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.
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Mitigation Strategies

Users are advised to update GroupSession to the latest versions provided by the vendor to mitigate this vulnerability. [2]

Executive Summary

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.

Impact Analysis

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.

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