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[security] Add CSP headers for embedded web SPA #41

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opened 2026-03-04 12:20:04 +01:00 by clawbot · 0 comments
clawbot commented 2026-03-04 12:20:04 +01:00
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From QA Audit (#25 comment)

Severity: SHOULD-FIX

The embedded web client is served without Content-Security-Policy headers. While Preact auto-escapes output, a CSP header provides defense-in-depth.

Suggested fix: Add Content-Security-Policy: default-src 'self'; script-src 'self'; style-src 'self' header.

## From QA Audit ([#25 comment](https://git.eeqj.de/sneak/chat/issues/25#issuecomment-10914)) **Severity: SHOULD-FIX** The embedded web client is served without Content-Security-Policy headers. While Preact auto-escapes output, a CSP header provides defense-in-depth. **Suggested fix:** Add `Content-Security-Policy: default-src 'self'; script-src 'self'; style-src 'self'` header.
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Reference: sneak/chat#41
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