CVE-2025-21620 — Deno's authorization headers not dropped when redirecting cross-origin

CVE-2025-21620

Deno's authorization headers not dropped when redirecting cross-origin PUBLISHED

Description (CNA)

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.

Affected (CNA)

Vendor / product	Versions
denoland / deno	affected < 2.1.2

CWE

CWE-200

References

https://github.com/denoland/deno/security/advisories/GHSA-f27p-cmv8-xhm6

ADP enrichment

CISA-ADP

No English description supplied.

No references supplied.