Cross-Site Scripting Vulnerability in Cybozu Garoon by Cybozu
CVE-2026-20711

6.9MEDIUM

Key Information:

Vendor

Cybozu
Status
Cybozu Garoon
Vendor
CVE Published:
2 February 2026

What is CVE-2026-20711?

A cross-site scripting (XSS) vulnerability exists in the E-mail function of Cybozu Garoon versions 5.0.0 to 6.0.3. This vulnerability may allow attackers to execute arbitrary scripts in the context of the user's session. Such an attack can lead to unauthorized password resets for affected users, compromising the security of their accounts and sensitive data. Organizations utilizing affected versions of Cybozu Garoon should apply the necessary updates and monitoring to mitigate potential exploitation.

Affected Version(s)

Cybozu Garoon 5.0.0 to 6.0.3

References

https://kb.cybozu.support/article/39081/
https://jvn.jp/en/jp/JVN35265756/

CVSS V4

Score:
6.9
Severity:
MEDIUM
Confidentiality:
None
Integrity:
High
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
Unknown

CVSS V3.0

Score:
6.5
Severity:
MEDIUM
Confidentiality:
None
Integrity:
High
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
Required
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.