Severity:

CRITICAL RISK

(9.8)

Arbitrary File Upload (CWE-434) in Flatnotes 5.5.4

CVE-2026-50873

Published:

Jun 15, 2026

Status:

Deferred

Summary

Affected Context

Exploit Preconditions

Why This Happens

Potential Impact

General Mitigation Guidance

How Teams Detect Issues Like This

Frequently Asked Questions

Source

NDV

Recent Vulnerabilities

CWE-74;CWE-94

HIGH RISK

HIGH

(7.3)

Code Injection (CWE-94) in ANTLR4 Grammar Action Block

Arbitrary Code Execution in Generated Artifacts

June 28, 2026

CWE-74;CWE-89

HIGH RISK

HIGH

(7.3)

SQL Injection (CWE-89) in Restaurant Password Reset

Authentication Data Exposure and Account Compromise

June 28, 2026

Vulnerability Type

Category:

Arbitrary File Upload

CWE:

CWE-434

Impact:

Remote Code Execution via Malicious Attachments

Severity:

CRITICAL RISK

(9.8)

CVSS Version:

3.1

Vulnerability Type

Category:

Arbitrary File Upload

CWE:

CWE-434

Impact:

Remote Code Execution via Malicious Attachments

Severity:

CRITICAL RISK

(9.8)

CVSS Version:

3.1

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Arbitrary File Upload (CWE-434) in Flatnotes 5.5.4

Summary

Affected Context

Exploit Preconditions

Why This Happens

Potential Impact

General Mitigation Guidance

How Teams Detect Issues Like This

Frequently Asked Questions

Source

Recent Vulnerabilities

HIGH RISK

HIGH

(7.3)

Code Injection (CWE-94) in ANTLR4 Grammar Action Block

HIGH RISK

HIGH

(7.3)

SQL Injection (CWE-89) in Restaurant Password Reset

Vulnerability Type

Vulnerability Type

Vulnerability Type

Catch This CVE While Code Is Being Written

Ship clean & secure code faster

Ship clean & secure code faster

Ship clean & secure code faster

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