CVE-2025-61950

Description

In GroupSession, a Circular notice can be created with its memo field non-editable, but the authorization check is improperly implemented. With some crafted request, a logged-in user may alter the memo field. The affected products and versions are GroupSession Free edition prior to ver5.3.0, GroupSession byCloud prior to ver5.3.3, and GroupSession ZION prior to ver5.3.2.

CVSS v3.1 Score

4.3

MEDIUM

CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N

Weakness Type (CWE)

CWE-639 CWE-639

Affected Products

Vendor	Product	Versions
groupsession	groupsession	< 5.3.0
groupsession	groupsession	< 5.3.2
groupsession	groupsession	< 5.3.3

References

Advisories & Patches

https://groupsession.jp/info/info-news/security20251208

Other References

https://jvn.jp/en/jp/JVN19940619/

Frequently Asked Questions

What is CVE-2025-61950? +

In GroupSession, a Circular notice can be created with its memo field non-editable, but the authorization check is improperly implemented. With some crafted request, a logged-in user may alter the memo field. The affected products and versions are GroupSession Free edition prior to ver5.3.0, GroupSession byCloud prior to ver5.3.3, and GroupSession ZION prior to ver5.3.2. It has a CVSS v3.1 base score of 4.3 (MEDIUM).

How severe is CVE-2025-61950? +

CVE-2025-61950 has a CVSS v3.1 score of 4.3 out of 10, rated MEDIUM. This is a medium-severity vulnerability that should be remediated as part of regular maintenance.

What products are affected by CVE-2025-61950? +

CVE-2025-61950 affects products from groupsession, specifically: groupsession. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2025-61950? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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