CVE-2025-48934
Severity CVSS v4.0:
MEDIUM
Type:
Unavailable / Other
Publication date:
04/06/2025
Last modified:
02/07/2025
Description
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.
Impact
Base Score 4.0
5.50
Severity 4.0
MEDIUM
Base Score 3.x
5.30
Severity 3.x
MEDIUM
Vulnerable products and versions
CPE | From | Up to |
---|---|---|
cpe:2.3:a:deno:deno:*:*:*:*:*:*:*:* | 2.1.13 (excluding) | |
cpe:2.3:a:deno:deno:*:*:*:*:*:*:*:* | 2.2.0 (including) | 2.2.13 (excluding) |
To consult the complete list of CPE names with products and versions, see this page
References to Advisories, Solutions, and Tools
- 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
- https://github.com/denoland/deno/security/advisories/GHSA-7w8p-chxq-2789