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CVE-2026-40895

High

Description

follow-redirects is an open source, drop-in replacement for Node's `http` and `https` modules that automatically follows redirects. Prior to 1.16.0, when an HTTP request follows a cross-domain redirect (301/302/307/308), follow-redirects only strips authorization, proxy-authorization, and cookie headers (matched by regex at index.js). Any custom authentication header (e.g., X-API-Key, X-Auth-Token, Api-Key, Token) is forwarded verbatim to the redirect target. This vulnerability is fixed in 1.16.0.

SeverityHigh
CVSS7.5
Exploit probability—
ProductFollow-redirects
PublishedApr 21, 2026
First seenApr 21, 2026
Weakness typeCWE-200Sensitive information exposure

How to fix

Update
  • follow-redirects_project follow-redirects1.16.0 or later
  • follow-redirects1.16.0 or later
Vendor advisories

Affected products

ProductAffected versionsFixed in
follow-redirects_project follow-redirectsv < 1.16.01.16.0
follow-redirectsnpmv < 1.16.0, v ≤ 1.15.111.16.0

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