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Single Sign On Portal System CVE-2026-1428

HIGH
OS Command Injection (CWE-78)
2026-01-26 twcert@cert.org.tw
Command Injection Single Sign On Portal System
8.8
CVSS 3.1 · NVD
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Severity by source

NVD PRIMARY
8.8 HIGH
AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

Lifecycle Timeline

2
Analysis Generated
Mar 12, 2026 - 22:00 vuln.today
CVE Published
Jan 26, 2026 - 09:15 nvd
HIGH 8.8

DescriptionCVE.org

Single Sign-On Portal System developed by WellChoose has a OS Command Injection vulnerability, allowing authenticated remote attackers to inject arbitrary OS commands and execute them on the server.

AnalysisAI

WellChoose's Single Sign-On Portal System contains an OS command injection vulnerability that allows authenticated users to execute arbitrary commands on the affected server. Attackers with valid credentials can exploit this flaw to achieve remote code execution with full system privileges. …

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Attack ChainAIDerived

Hypothetical attack flow derived from CVE metadata

Access
Authenticate to SSO portal
Exploit
Locate command injection input field
Execution
Inject OS command payload
Impact
Execute arbitrary commands on server
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Vulnerability AssessmentAI

Exploitation Valid user credentials required for WellChoose Single Sign-On Portal System. … Additional conditions and limiting factors are described in the full assessment.
Risk Assessment CVSS 8.8 (HIGH). … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in.
Exploit Scenario A remote attacker (requires authentication) could exploit this vulnerability to compromise the affected system.
Remediation Monitor vendor advisories for a patch. … Detailed patch versions, workarounds, and compensating controls in full report.
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Recommended ActionAI

Within 24 hours: Inventory all WellChoose SSO deployments and assess user access patterns; implement enhanced logging and monitoring for suspicious command execution. …

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Threat intelligence, references, and detailed analysis are available after sign-in.

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CVE-2026-1428 vulnerability details – vuln.today
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