Tesla: Authorization header leaks on cross-origin redirect via case-sensitive filtering — GHSA-9M9W-GXF7-RH8M

Summary

### Summary `Tesla.Middleware.FollowRedirects` is meant to strip the `Authorization` header when following a cross-origin redirect, but performs the check with a case-sensitive comparison against the lowercase string `"authorization"`. Because Tesla preserves header keys exactly as supplied by the caller, any application that sets the header with its RFC 7235 canonical casing (`"Authorization"`) bypasses the filter…

Timeline

Published by source

2026-07-10

Risk context

• Reported severity or threat level: high.
• Reported CVSS score: 8.2 out of 10.
• Reported EPSS value: 0.00396.
• Review exposure for the affected product or family: erlang: tesla.

Product

erlang: tesla

What to do

General, cautious steps (verify details in the official source):

• Prioritize patching or mitigation immediately (treat as actively risky).
• Identify affected product versions in your inventory and verify whether you are impacted.
• Apply vendor patches/updates or recommended mitigations as soon as available.
• Read the official advisory for exact affected versions and remediation steps.

Official advisory

• Read the official source
• CVE Record
• NVD

Evidence and provenance

Canonical advisory ID

GHSA-9M9W-GXF7-RH8M

Source

GitHub

Vendor

GitHub

Published by source

2026-07-10

Last source activity

2026-07-10

Additional identifiers

CVE-2026-48595

Curated by

hlukh.ch

Related advisories and connections

These advisories are connected by shared CVE, product, vendor, source, or time signals.