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Description

Deno is a JavaScript, TypeScript, and WebAssembly runtime with secure defaults. When you send a request with the Authorization header to one domain, and the response asks to redirect to a different domain, Deno'sfetch() redirect handling creates a follow-up redirect request that keeps the original Authorization header, leaking its content to that second domain. This vulnerability is fixed in 2.1.2.

PUBLISHED Reserved 2024-12-29 | Published 2025-01-06 | Updated 2025-01-07 | Assigner GitHub_M




HIGH: 7.5CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Problem types

CWE-200: Exposure of Sensitive Information to an Unauthorized Actor

Product status

< 2.1.2
affected

References

github.com/...d/deno/security/advisories/GHSA-f27p-cmv8-xhm6

cve.org (CVE-2025-21620)

nvd.nist.gov (CVE-2025-21620)

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