GitHub Advisoryadvisory · npm

GHSA-vhjm-w67q-g75c @hapi/wreck leaks sensitive `Proxy-Authorization` header across cross-hostname redirects

MEDIUM Published 2026-05-27 Modified 2026-05-27 Official page ↗
Aliases
CVE-2026-44979
Ecosystem
npm
Packages
@hapi/wreck
Severity
Moderate
CVSS vector
CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:L/VI:N/VA:N/SC:L/SI:N/SA:N
Weaknesses
CWE-200, CWE-522
Reviewed
2026-05-27

Affected packages

• npm @hapi/wreck: < 18.1.1 → fixed in 18.1.1

Description

Impact When `@hapi/wreck` follows a 3xx redirect to a different hostname, only the `Authorization` and `Cookie` headers are stripped. The standard credential header `Proxy-Authorization` is forwarded intact to the redirect target, potentially exposing forward-proxy credentials to a host outside the original trust boundary. Redirect following is opt-in. The redirects option defaults to false (no redirections followed), so applications are only affected if they have explicitly set redirects to a positive integer on the request or via `Wreck.defaults({ redirects: ... })`. Patches `@hapi/wreck` 18.1.1 extends the cross-hostname strip set to include `proxy-authorization`. Upgrade to 18.1.1 or later. Workarounds If upgrading is not immediately possible: • Leave redirects at its default (`false`) — applications that never enable redirect following are not affected. • If redirects are required, set redirects: 0 when calling endpoints with sensitive headers, or strip Proxy-Authorization from the headers before issuing the request. • Use the `beforeRedirect` hook to manually strip proxy-authorization (and any other sensitive application headers) when `redirectOptions` targets a different hostname than the original request. Resources • Related: CVE-2024-30260 / GHSA-3787-6prv-h9w3 (undici) • RFC 7235 §4.4 — Proxy-Authorization

Related

Alias · CVE (1)

Weakness · CWE (2)

  • CWE-200 Exposure of Sensitive Information to an Unauthorized Actor weakness
  • CWE-522 Insufficiently Protected Credentials weakness

References