🐛 Bugfix: How to fix AI_CONTEXT_UPDATE validator not rejecting oversiz...

Date: 2026-01-29
Time: 22:15:56 UTC
Session: editor2-73.15
Agent: angular
Confidence: 95%
Status: ✅ Documented

📋 Decision Context

Question:

How to fix AI_CONTEXT_UPDATE validator not rejecting oversized contextType strings?

Task: Fix Phase 5 security issues identified by cowork agent

🎯 Decision Made

Chosen:

Add explicit length validation for contextType field before checking optional fields

Options Considered:

• No alternatives documented

💭 Reasoning

The validateContextPayload function checked string lengths for optional fields (spaceId, pageId, widgetId, route) but missed the required contextType field. This allowed attackers to send payloads with oversized contextType strings that could cause memory issues. Added MAX_STRING_LENGTH check for contextType immediately after validating it exists.

📁 Files Involved

• libs/libs-ux/embeddable-bridge/src/lib/protocols/message-protocol.ts

🔗 Related

• Decision ID: dev_1769724956546_dvsqs4x
• Session: 73
• Workspace: editor2

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