Is this vulnerability remotely exploitable?

Yes. An attacker who can reach an upload endpoint and submit a crafted PDF can exploit this issue. The attack becomes effective when another user (often a privileged CMS user) later views the uploaded PDF via the application.

Does an attacker need valid credentials to exploit this?

In most deployments, yes—some level of access is typically required to upload files (such as an editor or contributor role). However, if any upload endpoint is exposed to anonymous users, then exploitation could occur without authentication.

What is the safest general fix pattern?

The most robust approach is to treat uploaded PDFs as untrusted binary data: block or strip active content, serve them from a segregated origin, and default to non-inline rendering (e.g., forced download). Coupling this with strict content-type handling and security headers significantly reduces the chance of script execution.

Severity:

HIGH RISK

(8.7)

Stored Cross-Site Scripting (CWE-79) via Malicious PDF Upload in PublicCMS File Handling

CVE-2025-69437

Published:

Feb 27, 2026

Status:

Analyzed

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-78

CRITICAL RISK

CRITICAL

(9.9)

Command Injection in MCP Stdio Configuration Validation (CWE-78) in WeKnora

Remote Code Execution

March 7, 2026

CWE-89

CRITICAL RISK

CRITICAL

(9.9)

SQL Injection via PostgreSQL Array/Row Expressions (CWE-89) in WeKnora Query Engine

Remote Code Execution via SQL Injection on the Database Server

March 7, 2026

Vulnerability Type

Category:

Stored Cross-Site Scripting (XSS)

CWE:

CWE-79

Impact:

Client-Side Code Execution / Session Compromise

Severity:

HIGH RISK

(8.7)

CVSS Version:

3.1

Vulnerability Type

Category:

Stored Cross-Site Scripting (XSS)

CWE:

CWE-79

Impact:

Client-Side Code Execution / Session Compromise

Severity:

HIGH RISK

(8.7)

CVSS Version:

3.1

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Made with Love in San Francisco

355 Bryant St. San Francisco, CA 94107, USA

Ask AI for summary of CodeAnt

Stored Cross-Site Scripting (CWE-79) via Malicious PDF Upload in PublicCMS File Handling

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

CRITICAL RISK

CRITICAL

(9.9)

Command Injection in MCP Stdio Configuration Validation (CWE-78) in WeKnora

CRITICAL RISK

CRITICAL

(9.9)

SQL Injection via PostgreSQL Array/Row Expressions (CWE-89) in WeKnora Query Engine

Vulnerability Type

Vulnerability Type

Vulnerability Type

Catch This CVE While Code Is Being Written

Ship clean & secure code faster

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