Information disclosure in Japan Total System Co.,Ltd. GroupSession
Priority LOW 32CWE-200Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- Low
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Information disclosure
- Confidentiality · integrity · availability
- High · None · None
- Fix status
- No fix listed
Attack profile from CVSS 3.0 · NVD. Fix status from CNA. Impact type from CWE-200.
Summary
GroupSession versions 4.6.4 and earlier allows remote authenticated attackers to bypass access restrictions to obtain sensitive information such as emails via unspecified vectors.
Why it matters now
EPSS 0.01343 71st percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| Japan Total System Co.,Ltd. | GroupSession | up to 4.6.4 | — | No fix listed | CNA |
- GroupSession VendorJapan Total System Co.,Ltd. Affected up to 4.6.4 Fixed in — No fix listed CNA
CPE configurations NVD · 1
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:groupsession:groupsession:*:*:*:*:*:*:*:* | up to 4.6.4 | Vulnerable | Japan Total System Co.,Ltd. |
- cpe:2.3:a:groupsession:groupsession:*:*:*:*:*:*:*:* Versions up to 4.6.4 Vulnerable ·Japan Total System Co.,Ltd.
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2017-2165
- 2026-10-03 Alias added: GHSA-44pj-2f7w-4jf4
References
Advisory 1
More Japan Total System Co.,Ltd. Groupsession vulnerabilities
- TI-2021-04088 Incorrect permission assignment in Japan Total System Co.,Ltd. GroupSession Free edition… CVSS 3.1HIGH 7.5
- TI-2025-38316 GroupSession Free edition prior to ver5.3.0, GroupSession byCloud prior to ver5.3.3, and… CVSS 4.0MEDIUM 6.9
- TI-2021-04090 Path traversal in Japan Total System Co.,Ltd. GroupSession Free edition, GroupSession… CVSS 3.1MEDIUM 6.8
- TI-2025-38294 Authorization bypass in Japan Total System Co.,Ltd. GroupSession Free edition CVSS 4.0MEDIUM 5.3
- TI-2021-04089 Open redirect in Japan Total System Co.,Ltd. GroupSession Free edition, GroupSession… CVSS 3.1MEDIUM 6.1
- TI-2021-04015 Open redirect in Japan Total System Co.,Ltd. GroupSession CVSS 3.1MEDIUM 6.1
Sources
- CVE-2017-2165 · CVE Program
- CVE-2017-2165 · NVD
- FIRST EPSS
- GHSA-44pj-2f7w-4jf4 · GitHub Advisory Database · CC BY 4.0
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