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I. Basic Information for CVE-2025-48934
Vulnerability Information

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Vulnerability Title
Deno.env.toObject() ignores the variables listed in --deny-env and returns all environment variables
Source: NVD (National Vulnerability Database)
Vulnerability 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.
Source: NVD (National Vulnerability Database)
CVSS Information
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Type
通过发送数据的信息暴露
Source: NVD (National Vulnerability Database)
Vulnerability Title
Deno 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Deno是Deno开源的一个简单、现代且安全的 JavaScript 和 TypeScript 运行环境。 Deno 2.1.13之前版本和2.2.13之前版本存在安全漏洞,该漏洞源于Deno.env.toObject方法忽略deny-env选项,可能导致敏感信息泄露。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
VendorProductAffected VersionsCPESubscribe
denolanddeno < 2.1.13 -
II. Public POCs for CVE-2025-48934
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III. Intelligence Information for CVE-2025-48934
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