Garoon
CVE-2026-22888
HIGH
Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata – not a confirmed exploit chain
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AccessSend unauthenticated HTTP request to portal settings endpoint
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ExploitBypass input verification via crafted parameters
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ExecutionModify portal configuration
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ImpactDeny access to Garoon product
Vulnerability Assessment
| Weakness |
CWE
OWASP Top 10:2025
A06:2021 - Vulnerable and Outdated Components
ASVS 5.0
V2 - Validation and Business Logic Extra parameter handling
|
| Exploitation Conditions | Network accessibility to Cybozu Garoon 5.0.0 through 6.0.3 portal settings API endpoint. No authentication required. Affects default deployments exposed to network without additional access controls. |
| Impact | CVSS 7.5 (HIGH). Attack vector: Network. Complexity: Low. Privileges required: None. User interaction: None. Exploitation no authentication required. |
| Exploit ScenarioDerived | An attacker without authentication could exploit this vulnerability to unauthorized alteration of portal settings, potentially blocking access to the p. |
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Alert meAnalysisAIv1 – Mar 12, 2026
Garoon contains a vulnerability that allows attackers to unauthorized alteration of portal settings, potentially blocking access to the p (CVSS 7.5).
RemediationAI
Monitor vendor advisories for a patch. Restrict network access to the affected service where possible.
Affects your stack
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Technical ContextAI · show details
affects Garoon. Improper input verification issue exists in Cybozu Garoon 5.0.0 to 6.0.3, which may lead to unauthorized alteration of portal settings, potentially blocking access to the product.
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- Exploit and PoC references, threat intelligence from 22 sources
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Severity by source
AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Primary rating from NVD · only source for this CVE.
CVSS VectorNVD
DescriptionCVE.org
Improper input verification issue exists in Cybozu Garoon 5.0.0 to 6.0.3, which may lead to unauthorized alteration of portal settings, potentially blocking access to the product.
Executive ViewAI
CVE-2026-22888 affects Garoon and allows attackers to modify portal settings, potentially denying legitimate users access to critical collaboration platforms. Without an available patch, this vulnerability poses an immediate risk to organizational productivity and data accessibility until mitigation controls are implemented.
Restrict administrative access to Garoon portal configuration via network segmentation or VPN-only access; implement Web Application Firewall (WAF) rules to detect and block unauthorized portal setting modification attempts; enforce multi-factor authentication for all administrative accounts; disable unnecessary portal customization features if supported; implement real-time alerting on configuration changes; maintain offline backups of portal settings to enable rapid recovery from unauthorized modifications.
Threat Intelligence Overview
NVD
CVE.org
EPSS
How this decision was reached
The engine reads each signal below and applies a fixed list of rules from top to bottom. The first rule that matches sets the recommended action – like a statement, every line is shown.
What every action level means
SSVC AssessmentENISA
Priority Score
Attack Technique
Authentication bypass attacks exploit flaws in the verification mechanisms that control access to systems and applications.
Affected Products (CPE)CVE.org
The CGI component in Cybozu Garoon 3.1.0 through 3.7 SP3 allows remote attackers to execute arbitrary commands via unspe
Cybozu Garoon before 4.2.2 allows remote attackers to bypass login authentication via vectors related to API use. Rated
Cybozu Garoon 4.2.4 to 4.10.1 allow remote attackers to obtain the users' credential information via the authentication
SQL injection vulnerability in the Cybozu Garoon 3.0.0 to 4.2.2 allows remote authenticated attackers to execute arbitra
Cross-site scripting vulnerability in Cybozu Garoon 5.0.0 to 5.15.2 allows a remote authenticated attacker with an admin
SQL injection vulnerability in Cybozu Garoon before 4.2.2. Rated high severity (CVSS 8.8), this vulnerability is remotel
Cybozu Garoon 3.0.0 to 4.2.2 allow remote attackers to obtain CSRF tokens via unspecified vectors. Rated high severity (
SQL injection vulnerability in the Notifications application in the Cybozu Garoon 3.5.0 to 4.6.2 allows remote authentic
SQL injection vulnerability in the Cybozu Garoon 3.5.0 to 4.2.6 allows remote authenticated attackers to execute arbitra
Cybozu Garoon 4.0.0 to 4.6.3 allows authenticated attackers to alter the information with privileges invoking the instal
Cybozu Garoon 3.x through 3.7.5 and 4.x through 4.0.3 allows remote authenticated users to execute arbitrary PHP code vi
The RSS Reader component in Cybozu Garoon 3.x through 3.7.5 and 4.x through 4.0.3 allows remote authenticated users to e
GitHub PoC
Exploit-DB