Package vulnerability, severity high

follow-redirects: Cross-realm sensitiveHeaders arrays are discarded and custom credentials can follow redirects

Published October 30, 2026, updated October 31, 2026

follow-redirects: Cross-realm sensitiveHeaders arrays are discarded and custom credentials can follow redirects. Source: GHSA-mrwp-f3q8-3g9p (CVE-2026-116689).

What's affected

• follow-redirects (npm)>=1.16.0 <1.16.2

What to do

1. Upgrade follow-redirects to 1.16.2 or later.

Check whether you were affected

Pharon tells teams automatically when this affects something they run. To check a machine, run this in Claude Code with the Pharon plugin, in the repository that uses it:

/pharon:check-incident ghsa-mrwp-f3q8-3g9p

References

• https://osv.dev/vulnerability/GHSA-mrwp-f3q8-3g9p
• https://github.com/follow-redirects/follow-redirects/security/advisories/GHSA-mrwp-f3q8-3g9p
• https://nvd.nist.gov/vuln/detail/CVE-2026-116689
• https://github.com/follow-redirects/follow-redirects/commit/b0a7751e9cd64cd8eeb6ec67d2f206a9cc88d3f8
• https://github.com/follow-redirects/follow-redirects
• https://github.com/follow-redirects/follow-redirects/releases/tag/v1.16.2

Notice ghsa-mrwp-f3q8-3g9p, signed with key feed-prod-2026-10 (Ed25519). The Pharon CLI verifies the signature before using a notice.