CVE-2026-44979 @hapi/wreck : Sensitive `Proxy-Authorization` header leaked across cross-hostname redirects
Attackers can steal Proxy-Authorization credentials when the library follows cross-host redirects, exposing sensitive proxy authentication data.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2026-44979?
CVE-2026-44979 is a medium-severity vulnerability in hapijs wreck, published on 17 Jul 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
@hapi/wreck is an HTTP client utility. Prior to 18.1.1, when @hapi/wreck follows a 3xx redirect to a different hostname, only the Authorization and Cookie headers are stripped, and 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 when redirects are enabled through the redirects option or Wreck.defaults({ redirects: ... }). This issue is fixed in version 18.1.1.
Which versions are affected by CVE-2026-44979?
2 open source packages ship an affected version, including @hapi/wreck.
| Package | Affected | Fixed in |
|---|---|---|
@hapi/wreck npm | All versions | 18.1.1 |
@hapi/wreck npm | All versions | 18.1.1 |
How do I fix CVE-2026-44979?
Upgrade @hapi/wreck to 18.1.1 or later.
Is CVE-2026-44979 being exploited?
There is no known exploitation of CVE-2026-44979 in the wild and no public exploit code.
Sources
Also known as CLEANSTART-2026-RN50585, GHSA-vhjm-w67q-g75c, MINI-2hf6-735q-x2vh, MINI-2j25-9grm-g845, MINI-3627-mqwj-f8wm, MINI-5g7p-cj84-5pw7 and 12 more.