What is the CVSS score of CVE-2026-1619?

CVE-2026-1619 has a CVSS 3.1 base score of 8.3 (High). CVSS vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:L. EPSS exploitation probability: 0.0%.

How to fix or mitigate CVE-2026-1619?

Within 24 hours: inventory all Flexcity deployments and their versions; restrict network access to Flexcity instances to trusted sources only. Within 7 days: implement WAF rules to detect and block suspicious authorization attempts; contact Flexcity vendor for patch timeline and interim guidance. Within 30 days: establish a detailed remediation plan including upgrade scheduling or alternative solutions; conduct security testing to validate compensating controls.

Flexcity CVE-2026-1619

HIGH

Authorization Bypass Through User-Controlled Key (CWE-639)

2026-02-13 iletisim@usom.gov.tr

Authentication Bypass Flexcity Uni Yaz

8.3

CVSS 3.1 · NVD

View

Attack ChainAIDerived

Hypothetical attack flow derived from CVE metadata – not a confirmed exploit chain

Access

Authenticate as low-privilege user
Exploit

Submit crafted request with manipulated user-controlled key
Execution

Bypass authorization checks
Impact

Access high-privilege resources

Vulnerability Assessment

Weakness	CWE CWE-639 OWASP Top 10:2025 A01:2025 - Broken Access Control ASVS 5.0 V8 - Authorization Object-level authorization, IDOR prevention
Exploitation Conditions	FlexCity/Kiosk versions 1.0 through 1.0.35 with authentication enabled. Attacker requires valid low-privilege user credentials. Vulnerable identifier handling in trusted key validation mechanism.
Impact	CVSS 8.3 (HIGH). Attack vector: Network. Complexity: Low. Privileges required: Low. User interaction: None.
Exploit ScenarioDerived	An attacker could exploit this vulnerability to compromise the affected system.

This Week Schedule remediation this week. Why: HIGH severity (CVSS 7.0-8.9).

No patch listed yet 0.0% exploitation probability (EPSS)

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AnalysisAIv1 – Mar 12, 2026

Flexcity versions up to 1.0.36. is affected by authorization bypass through user-controlled key (CVSS 8.3).

RemediationAI

Monitor vendor advisories for a patch. Restrict network access to the affected service where possible.

Affects your stack

Find out whether the stacks and servers you run are on an affected version.

Checking this CVE against your own stacks and servers is part of the Basic plan and up.

Technical ContextAI · show details

This vulnerability (CWE-639: Authorization Bypass Through User-Controlled Key) affects Flexcity. Authorization Bypass Through User-Controlled Key vulnerability in Universal Software Inc. FlexCity/Kiosk allows Exploitation of Trusted Identifiers.This issue affects FlexCity/Kiosk: from 1.0 before 1.0.36.

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Exploit and PoC references, threat intelligence from 22 sources

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Severity by source

NVD PRIMARY 8.3 HIGH

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

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

Attack Vector

Network

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

Low

DescriptionCVE.org

Authorization Bypass Through User-Controlled Key vulnerability in Universal Software Inc. FlexCity/Kiosk allows Exploitation of Trusted Identifiers.This issue affects FlexCity/Kiosk: from 1.0 before 1.0.36.

Executive ViewAI

Why It Matters

Flexcity versions 1.0.36 and earlier contain a critical authorization bypass vulnerability that could allow attackers to access sensitive data or perform unauthorized actions by manipulating user-controlled authentication keys. This affects any organization running vulnerable versions and requires immediate action since no patch is currently available.

Business Impact: High

Compensating Controls

Implement Web Application Firewall (WAF) rules to monitor and block requests with suspicious or modified authorization headers/keys; restrict Flexcity network access through IP whitelisting and VPN; disable non-essential Flexcity features that depend on user-controlled authentication keys; increase logging and monitoring of authorization-related events; consider network segmentation to isolate Flexcity from critical systems; request emergency patch status from vendor or evaluate alternative products.

Threat Intelligence Overview

EPSS Score

0.0%

Top 87% exploitable

Data Quality

3 sources

Confidence: Low

NVD

CVE.org

EPSS

VulDB

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.

SignalValue

Severity HIGH

CISA KEV No

Public POC No

EPSS 0.0%

Patch available No

Active threat No

Deciding rule

HIGH severity (CVSS 7.0-8.9)

What every action level means

Emergency Immediate action required. Criteria: CRITICAL + in CISA KEV (actively exploited) without patch, OR CRITICAL + EPSS > 30% without patch, OR CRITICAL + active threat signals without patch.

Act Now Prioritize within 24-48h. Criteria: in KEV with patch available, OR CRITICAL + public POC, OR HIGH + EPSS > 10%, OR CRITICAL + active threat, OR any CRITICAL severity.

This Week Schedule remediation this week. Criteria: HIGH severity (CVSS 7.0-8.9). Patch within normal change window.

This Month Plan within 30 days. Criteria: MEDIUM severity (CVSS 4.0-6.9), lower exploitation probability. Include in regular patch cycle.

Monitor Track and reassess. Criteria: LOW severity (CVSS 0.1-3.9), minimal exploitation risk. No immediate action needed.