CVE-2025-48934
Deno is a JavaScript, TypeScript, and WebAssembly runtime. Prior to versions 2.1.13 and 2.2.13, the Deno.env.toObject method ignores any variables listed in the --deny-env option of the deno run command. When looking at the documentation of the --deny-env option this might lead to a false impression that variables listed in the option are impossible to read. Software relying on the combination of both flags to allow access to most environment variables except a few sensitive ones will be vulnerable to malicious code trying to steal secrets using the Deno.env.toObject() method. Versions 2.1.13 and 2.2.13 contains a patch.
| Software | From | Fixed in |
|---|---|---|
deno
|
- | 2.1.13 |
|
deno
|
2.2.0 | 2.2.13 |
|
deno_runtime
|
- | 0.212.0 |
| deno / deno | 2.2.0 | 2.2.13 |
| deno / deno | - | 2.1.13 |
- https://docs.deno.com/api/deno/~/Deno.Env.toObject
- https://docs.deno.com/runtime/fundamentals/security/#environment-variables
- https://github.com/denoland/deno/commit/2959e083912420988066a001c2b2d6732a1b562f
- https://github.com/denoland/deno/commit/946ccda1aa19a00c478a5e6826b75053b050d753
- https://github.com/denoland/deno/pull/29079
- https://github.com/denoland/deno/security/advisories/GHSA-7w8p-chxq-2789
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