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CVE-2025-48934
Good to know:
Date: June 4, 2025
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.
Severity Score
Related Resources (9)
Severity Score
Weakness Type (CWE)
Insertion of Sensitive Information Into Sent Data
CWE-201Top Fix
Upgrade Version
Upgrade to version deno - 2.1.13;deno - 2.2.13;https://github.com/denoland/deno.git - v2.2.13;https://github.com/denoland/deno.git - v2.1.12
CVSS v3.1
| Base Score: |
|
|---|---|
| Attack Vector (AV): | NETWORK |
| Attack Complexity (AC): | LOW |
| Privileges Required (PR): | NONE |
| User Interaction (UI): | NONE |
| Scope (S): | UNCHANGED |
| Confidentiality (C): | LOW |
| Integrity (I): | NONE |
| Availability (A): | NONE |