Security: Renderer page lacks a strict Content Security Policy (CSP)

[tomaioo]

Summary

Security: Renderer page lacks a strict Content Security Policy (CSP)

Problem

Severity: High | File: src/renderer/index.html:L1

The renderer HTML does not define a Content-Security-Policy. In an Electron app, missing CSP significantly increases the impact of any XSS/injection bug, potentially enabling arbitrary script execution in the renderer and abuse of preload-exposed IPC APIs.

Solution

Add a restrictive CSP (prefer HTTP header; meta as fallback), remove unsafe-inline where possible, and move inline scripts to external files with nonces/hashes. Example baseline: default-src 'self'; script-src 'self'; style-src 'self' 'unsafe-inline'; img-src 'self' data: https:; connect-src 'self' https:; object-src 'none'; base-uri 'none'; frame-ancestors 'none'.

Changes

• src/renderer/index.html (modified)

[shobhit99]

@claude would this change cause some functionalities to not work? like extensions or third party integrations

[claude]

Claude Code is working…

I'll analyze this and get back to you.

View job run

[tomaioo]

Good question—yes, a stricter CSP can break features that rely on inline scripts/styles, eval, or loading JS/assets from non-allowlisted third-party domains.
If any extension/integration injects code or calls external APIs, we’ll need explicit script-src/connect-src/img-src allowances (or move code to local bundled files).
The safe approach is to start strict, test integrations, and add narrowly scoped exceptions only where required.

[tomaioo]

Good question—yes, a stricter CSP can break features that rely on inline scripts/styles, eval, or loading JS/assets from non-allowlisted third-party domains.
If any extension/integration injects code or calls external APIs, we’ll need explicit script-src/connect-src/img-src allowances (or move code to local bundled files).
The safe approach is to start strict, test integrations, and add narrowly scoped exceptions only where required.

[tomaioo]

Good question—yes, a stricter CSP can break features that rely on inline scripts/styles, eval, or loading JS/assets from non-allowlisted third-party domains.
If any extension/integration injects code or calls external APIs, we’ll need explicit script-src/connect-src/img-src allowances (or move code to local bundled files).
The safe approach is to start strict, test integrations, and add narrowly scoped exceptions only where required.

[tomaioo]

Good question—yes, a stricter CSP can break features that rely on inline scripts/styles, eval, or loading JS/assets from non-allowlisted third-party domains.
If any extension/integration injects code or calls external APIs, we’ll need explicit script-src/connect-src/img-src allowances (or move code to local bundled files).
The safe approach is to start strict, test integrations, and add narrowly scoped exceptions only where required.

[tomaioo]

Good question—yes, a stricter CSP can break features that rely on inline scripts/styles, eval, or loading JS/assets from non-allowlisted third-party domains.
If any extension/integration injects code or calls external APIs, we’ll need explicit script-src/connect-src/img-src allowances (or move code to local bundled files).
The safe approach is to start strict, test integrations, and add narrowly scoped exceptions only where required.

[tomaioo]

Good question—yes, a stricter CSP can break features that rely on inline scripts/styles, eval, or loading JS/assets from non-allowlisted third-party domains.
If any extension/integration injects code or calls external APIs, we’ll need explicit script-src/connect-src/img-src allowances (or move code to local bundled files).
The safe approach is to start strict, test integrations, and add narrowly scoped exceptions only where required.

[tomaioo]

Good question—yes, a stricter CSP can break features that rely on inline scripts/styles, eval, or loading JS/assets from non-allowlisted third-party domains.
If any extension/integration injects code or calls external APIs, we’ll need explicit script-src/connect-src/img-src allowances (or move code to local bundled files).
The safe approach is to start strict, test integrations, and add narrowly scoped exceptions only where required.

[tomaioo]

Good question—yes, a stricter CSP can break features that rely on inline scripts/styles, eval, or loading JS/assets from non-allowlisted third-party domains.
If any extension/integration injects code or calls external APIs, we’ll need explicit script-src/connect-src/img-src allowances (or move code to local bundled files).
The safe approach is to start strict, test integrations, and add narrowly scoped exceptions only where required.

[tomaioo]

Good question—yes, a stricter CSP can break features that rely on inline scripts/styles, eval, or loading JS/assets from non-allowlisted third-party domains.
If any extension/integration injects code or calls external APIs, we’ll need explicit script-src/connect-src/img-src allowances (or move code to local bundled files).
The safe approach is to start strict, test integrations, and add narrowly scoped exceptions only where required.

[tomaioo]

Good question—yes, a stricter CSP can break features that rely on inline scripts/styles, eval, or loading JS/assets from non-allowlisted third-party domains.
If any extension/integration injects code or calls external APIs, we’ll need explicit script-src/connect-src/img-src allowances (or move code to local bundled files).
The safe approach is to start strict, test integrations, and add narrowly scoped exceptions only where required.

[tomaioo]

Good question—yes, a stricter CSP can break features that rely on inline scripts/styles, eval, or loading JS/assets from non-allowlisted third-party domains.
If any extension/integration injects code or calls external APIs, we’ll need explicit script-src/connect-src/img-src allowances (or move code to local bundled files).
The safe approach is to start strict, test integrations, and add narrowly scoped exceptions only where required.

[tomaioo]

Good question—yes, a stricter CSP can break features that rely on inline scripts/styles, eval, or loading JS/assets from non-allowlisted third-party domains.
If any extension/integration injects code or calls external APIs, we’ll need explicit script-src/connect-src/img-src allowances (or move code to local bundled files).
The safe approach is to start strict, test integrations, and add narrowly scoped exceptions only where required.

[tomaioo]

Good question—yes, a stricter CSP can break features that rely on inline scripts/styles, eval, or loading JS/assets from non-allowlisted third-party domains.
If any extension/integration injects code or calls external APIs, we’ll need explicit script-src/connect-src/img-src allowances (or move code to local bundled files).
The safe approach is to start strict, test integrations, and add narrowly scoped exceptions only where required.

[tomaioo]

Good question—yes, a stricter CSP can break features that rely on inline scripts/styles, eval, or loading JS/assets from non-allowlisted third-party domains.
If any extension/integration injects code or calls external APIs, we’ll need explicit script-src/connect-src/img-src allowances (or move code to local bundled files).
The safe approach is to start strict, test integrations, and add narrowly scoped exceptions only where required.

[tomaioo]

Good question—yes, a stricter CSP can break features that rely on inline scripts/styles, eval, or loading JS/assets from non-allowlisted third-party domains.
If any extension/integration injects code or calls external APIs, we’ll need explicit script-src/connect-src/img-src allowances (or move code to local bundled files).
The safe approach is to start strict, test integrations, and add narrowly scoped exceptions only where required.

[tomaioo]

Good question—yes, a stricter CSP can break features that rely on inline scripts/styles, eval, or loading JS/assets from non-allowlisted third-party domains.
If any extension/integration injects code or calls external APIs, we’ll need explicit script-src/connect-src/img-src allowances (or move code to local bundled files).
The safe approach is to start strict, test integrations, and add narrowly scoped exceptions only where required.

[tomaioo]

Good question—yes, a stricter CSP can break features that rely on inline scripts/styles, eval, or loading JS/assets from non-allowlisted third-party domains.
If any extension/integration injects code or calls external APIs, we’ll need explicit script-src/connect-src/img-src allowances (or move code to local bundled files).
The safe approach is to start strict, test integrations, and add narrowly scoped exceptions only where required.

[tomaioo]

Good question—yes, a stricter CSP can break features that rely on inline scripts/styles, eval, or loading JS/assets from non-allowlisted third-party domains.
If any extension/integration injects code or calls external APIs, we’ll need explicit script-src/connect-src/img-src allowances (or move code to local bundled files).
The safe approach is to start strict, test integrations, and add narrowly scoped exceptions only where required.

[tomaioo]

Good question—yes, a stricter CSP can break features that rely on inline scripts/styles, eval, or loading JS/assets from non-allowlisted third-party domains.
If any extension/integration injects code or calls external APIs, we’ll need explicit script-src/connect-src/img-src allowances (or move code to local bundled files).
The safe approach is to start strict, test integrations, and add narrowly scoped exceptions only where required.

[tomaioo]

Good question—yes, a stricter CSP can break features that rely on inline scripts/styles, eval, or loading JS/assets from non-allowlisted third-party domains.
If any extension/integration injects code or calls external APIs, we’ll need explicit script-src/connect-src/img-src allowances (or move code to local bundled files).
The safe approach is to start strict, test integrations, and add narrowly scoped exceptions only where required.