Bright Data CERTIFICATE_VERIFY_FAILED behind the proxy - trust the new CA and move to port 44445

TL;DR

If proxied requests through Bright Data fail with CERTIFICATEVERIFYFAILED, the zone is doing TLS interception - every response is re-signed by the Bright Data Intermediate CA, which no client trusts by default. The fix that worked in the thread: download the root CA from the official Bright Data source (their static cert zip) and trust it narrowly for the proxy only; do not disable TLS verification or trust it system-wide. Also check your egress rules - the proxy port changed from 33335 to 44445 and environments that allowlist the old port silently drop the new one, surfacing as ERRTIMEDOUT rather than an auth error.

Fix

1. If proxied requests through Bright Data fail with CERTIFICATEVERIFYFAILED, the zone is doing TLS interception - every response is re-signed by the Bright Data Intermediate CA, which no client trusts by default.

Expected: You see the expected output instead of the problem.

1. The fix that worked in the thread: download the root CA from the official Bright Data source (their static cert zip) and trust it narrowly for the proxy only; do not disable TLS verification or trust it system-wide.

Expected: You get the expected result; the problem is gone.

When to use

• You are dealing with this situation.
• The symptom matches: Bright Data CERTIFICATEVERIFYFAILED behind the proxy - trust the new CA and move to port 44445.

When NOT to use

• Unrelated issues with a different cause.
• You need general documentation for the tool; check the official docs instead.

Compatibility

Reported per the linked source.

Variant phrasings

Bright Data CERTIFICATEVERIFYFAILED behind the proxy - trust the new CA and move to port 44445

Why it happens

GitHub issue judgemind/judgemind#4668 (closed, 4 comments, reported 2026-09-24): the new Bright Data residential zone authenticates, but two things break scrapers behind it. The zone intercepts TLS, so every proxied HTTPS response is re-signed by the Bright Data Intermediate CA - neither Chromium (Playwright) nor Python HTTP clients trust it, giving CERTIFICATEVERIFYFAILED on every proxied check. And the proxy port moved from 33335 to 44445, silently dropping egress in locked-down environments. The verified fix: trust the official Bright Data root CA narrowed to the proxy (never disable verification), open port 44445, and note Bright Data's own README says all new projects must use the new SSL certificate and connect via port 44445.

Edge cases

• If your error message differs even slightly, this is probably a different issue; search the exact text.
• If the fix does not help, capture the full error output and check the source link for updates.