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CVE-2024-24758 Low

Proxy-Authorization header not cleared on cross-origin redirect in fetch in Undici

Undici is an HTTP/1.1 client, written from scratch for Node.js. Undici already cleared Authorization headers on cross-origin redirects, but did not clear `Proxy-Authentication` headers. This issue has been patched in versions 5.28.3 and 6.6.1. Users are advised to upgrade. There are no known workarounds for this vulnerability.

Exploit probability 0.8%
Published February 16, 2024
Required by Not available
Last source change August 12, 2026

02 / AFFECTED SOFTWARE

Affected packages

Unknown Unknown

148 explicit affected versions

npm undici

03 / CONNECTIONS

Connected vulnerabilities

04 / EVIDENCE

Source records

Open Source Vulnerabilities CVE-2024-24758

Undici is an HTTP/1.1 client, written from scratch for Node.js. Undici already cleared Authorization headers on cross-origin redirects, but did not clear `Proxy-Authentication` headers. This issue has been patched in versions 5.28.3 and 6.6.1. Users are advised to upgrade. There are no known workarounds for this vulnerability.

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Open Source Vulnerabilities GHSA-3787-6prv-h9w3

### Impact Undici already cleared Authorization headers on cross-origin redirects, but did not clear `Proxy-Authorization` headers. ### Patches This is patched in v5.28.3 and v6.6.1 ### Workarounds There are no known workarounds. ### References - https://fetch.spec.whatwg.org/#authentication-entries - https://github.com/nodejs/undici/security/advisories/GHSA-wqq4-5wpv-mx2g

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05 / REFERENCES

Further evidence