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.

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)