CVE-2025-21620
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.
| Software | From | Fixed in |
|---|---|---|
deno_fetch
|
0.0.1 | 0.204.0 |
|
deno
|
- | 1.46.3.x |
|
deno
|
2.0.0 | 2.1.2 |
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