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CodeTracked since May 18, 2026

Scraper blocks private-network and rebinding targets

Aider’s scraper now enforces pre-flight network safety checks for URL fetches, rejecting private/internal or non-public destinations and tightening request handling so unsafe routes (including redirects and browser-side fetch paths) are filtered before content is pulled.

aider scraperHTTPXPlaywrighthostname resolution

What Happened

  • Aider’s scraper now enforces pre-flight network safety checks for URL fetches, rejecting private/internal or non-public destinations and tightening request handling so unsafe routes (including redirects and browser-side fetch paths) are filtered before content is pulled.
  • Aider’s scraper now enforces pre-flight network safety checks for URL fetches, rejecting private/internal or non-public destinations and tightening request handling so unsafe routes (including redirects and browser-side fetch paths) are filtered before content is pulled.
  • 1 evidence item attached for review.

What is Different

Before

Scattered source updates, isolated context, and manual follow-up across multiple feeds.

Now

Introduced a unified hardening path that resolves and validates hostnames before scraping, blocks non-public targets, revalidates redirect targets, disables proxy/environment routing for HTTPX, binds outbound connections to validated addresses, and restricts Playwright usage to literal-IP URLs with route-level unsafe-request blocking.

Why Track This

Why It Matters

Users running Aider’s scrape feature will now be stopped from reaching internal network endpoints (for example localhost, metadata services, and similar private addresses) through normal scrape inputs, reducing the chance that tooling accidentally probes or leaks access to local infrastructure. The change is implemented by validating destination resolution before requests, re-checking redirects, removing proxy/env path overrides, and adding browser-level request blocking for risky URL patterns, so SSRF and DNS-rebinding-like exposure paths are narrowed; operators should watch for false positives in environments that intentionally scrape internal hosts and verify redirect-heavy targets don’t bypass the new checks.

Impact

Users running Aider’s scrape feature will now be stopped from reaching internal network endpoints (for example localhost, metadata services, and similar private addresses) through normal scrape inputs, reducing the chance that tooling accidentally probes or leaks access to local infrastructure. The change is implemented by validating destination resolution before requests, re-checking redirects, removing proxy/env path overrides, and adding browser-level request blocking for risky URL patterns, so SSRF and DNS-rebinding-like exposure paths are narrowed; operators should watch for false positives in environments that intentionally scrape internal hosts and verify redirect-heavy targets don’t bypass the new checks.

What To Watch Next

  • Watch whether aider scraper becomes a repeated pattern.
  • Track follow-up changes around AI Security.
  • Compare future signals against this evidence trail.
  • Re-check risk flags: private_network_blocking_breaks_intended_internal_scrapes, redirect_revalidation_edge_case.
Open Topic TimelineOpen Technical EventOpen Original Sourceprivate_network_blocking_breaks_intended_internal_scrapes / redirect_revalidation_edge_case / playwright_ip_literal_restriction_overly_strict / proxy_env_disabling_affects_required_proxy_users

Supporting Evidence

GITHUB PULL REQUESTHigh Trust

aider-ai/aider PR #5137: Guard scraper against private network URLs

block scraper requests to private, loopback, link-local, metadata, multicast, and otherwise non-public network targets before fetching