What is the CVSS score of CVE-2026-1429?

CVE-2026-1429 has a CVSS 3.1 base score of 5.4 (Medium). CVSS vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N. EPSS exploitation probability: 0.0%.

Which versions of Single Sign On Portal System are affected by CVE-2026-1429?

Organizations using Single Sign-On Portal System developed by WellChoose should be aware of moderate risk from CVE-2026-1429, a cross-site scripting vulnerability rated CVSS 5.4.

How to fix or mitigate CVE-2026-1429?

Within 30 days: Identify affected systems and apply vendor patches as part of regular patch cycle. Verify Content-Security-Policy and output encoding.

Single Sign On Portal System CVE-2026-1429

MEDIUM

Cross-site Scripting (XSS) (CWE-79)

2026-01-26 twcert@cert.org.tw

XSS Single Sign On Portal System

5.4

CVSS 3.1 · NVD

Severity by source

NVD PRIMARY

5.4 MEDIUM

AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N

Attack Vector

Network

Attack Complexity

Low

Privileges Required

Low

User Interaction

Required

Scope

Changed

Confidentiality

Low

Integrity

Low

Availability

None

Lifecycle Timeline

Analysis Generated

Mar 12, 2026 - 22:00 vuln.today

CVE Published

Jan 26, 2026 - 09:15 nvd

MEDIUM 5.4

DescriptionCVE.org

Single Sign-On Portal System developed by WellChoose has a Reflected Cross-site Scripting vulnerability, allowing authenticated remote attackers to execute arbitrary JavaScript codes in user's browser through phishing attacks.

AnalysisAI

WellChoose's Single Sign-On Portal System contains a reflected cross-site scripting vulnerability that allows authenticated attackers to inject malicious JavaScript into user browsers through social engineering. An attacker could leverage this to steal session tokens, credentials, or perform actions on behalf of targeted users. …

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Vulnerability AssessmentAI

Risk Assessment	CVSS 5.4 (MEDIUM). … 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.

Recommended ActionAI

Within 30 days: Identify affected systems and apply vendor patches as part of regular patch cycle. …

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CVE-2026-1429 vulnerability details – vuln.today

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