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CVE-2021-20876

MEDIUM
6.8
CVSS Score
Published: December 24, 2021 at 06:30 AM UTC
Updated: June 17, 2026 at 03:34 AM UTC
2 products affected across 2 vendorsGroupsessionGroupSession

Using GroupSession Free edition, GroupSession byCloud, GroupSession ZION by Japan Total System Co.,Ltd.?

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Severity
MEDIUM6.8
Exploit prediction
EPSS 1%

Description

Path traversal vulnerability in GroupSession Free edition ver5.1.1 and earlier, GroupSession byCloud ver5.1.1 and earlier, and GroupSession ZION ver5.1.1 and earlier allows an attacker with an administrative privilege to obtain sensitive information stored in the hierarchy above the directory on the published site's server via unspecified vectors.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

Patch and advisory references

References (2)

x_refsource_MISCVendor Advisory
Source: [email protected]
https://groupsession.jp/info/info-news/security20211220
x_refsource_MISCThird Party Advisory
Source: [email protected]
https://jvn.jp/en/jp/JVN79798166/index.html

CVSS

6.8MEDIUM[email protected]
Attack Vector
NETWORK
Complexity
LOW
Privileges
HIGH
User Interaction
NONE
Scope
CHANGED
Confidentiality
HIGH
Integrity
NONE
Availability
NONE
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-22

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