fkie_cve-2025-48934
Vulnerability from fkie_nvd
Published
2025-06-04 20:15
Modified
2025-07-02 13:43
Severity ?
Summary
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.
References
{
"configurations": [
{
"nodes": [
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"cpeMatch": [
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"criteria": "cpe:2.3:a:deno:deno:*:*:*:*:*:*:*:*",
"matchCriteriaId": "68056691-1BB1-4E14-8B25-98CC9CE1AC2F",
"versionEndExcluding": "2.1.13",
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"cveTags": [],
"descriptions": [
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"lang": "en",
"value": "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."
},
{
"lang": "es",
"value": "Deno es un entorno de ejecuci\u00f3n de JavaScript, TypeScript y WebAssembly. En versiones anteriores a la 2.1.13 y la 2.2.13, el m\u00e9todo `Deno.env.toObject` ignora las variables listadas en la opci\u00f3n `--deny-env` del comando `deno run`. Al consultar la documentaci\u00f3n de la opci\u00f3n `--deny-env`, esto podr\u00eda dar la falsa impresi\u00f3n de que las variables listadas en ella son imposibles de leer. El software que utiliza la combinaci\u00f3n de ambos indicadores para acceder a la mayor\u00eda de las variables de entorno, excepto algunas sensibles, ser\u00e1 vulnerable a c\u00f3digo malicioso que intente robar secretos mediante el m\u00e9todo `Deno.env.toObject()`. Las versiones 2.1.13 y 2.2.13 contienen un parche."
}
],
"id": "CVE-2025-48934",
"lastModified": "2025-07-02T13:43:10.557",
"metrics": {
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"Recovery": "NOT_DEFINED",
"Safety": "NOT_DEFINED",
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"exploitMaturity": "PROOF_OF_CONCEPT",
"integrityRequirement": "NOT_DEFINED",
"modifiedAttackComplexity": "NOT_DEFINED",
"modifiedAttackRequirements": "NOT_DEFINED",
"modifiedAttackVector": "NOT_DEFINED",
"modifiedPrivilegesRequired": "NOT_DEFINED",
"modifiedSubAvailabilityImpact": "NOT_DEFINED",
"modifiedSubConfidentialityImpact": "NOT_DEFINED",
"modifiedSubIntegrityImpact": "NOT_DEFINED",
"modifiedUserInteraction": "NOT_DEFINED",
"modifiedVulnAvailabilityImpact": "NOT_DEFINED",
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"modifiedVulnIntegrityImpact": "NOT_DEFINED",
"privilegesRequired": "NONE",
"providerUrgency": "NOT_DEFINED",
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"valueDensity": "NOT_DEFINED",
"vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X",
"version": "4.0",
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"vulnerabilityResponseEffort": "NOT_DEFINED"
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"published": "2025-06-04T20:15:24.163",
"references": [
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"source": "security-advisories@github.com",
"tags": [
"Product"
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"url": "https://docs.deno.com/api/deno/~/Deno.Env.toObject"
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"source": "security-advisories@github.com",
"tags": [
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"url": "https://docs.deno.com/runtime/fundamentals/security/#environment-variables"
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"tags": [
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"vulnStatus": "Analyzed",
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"lang": "en",
"value": "CWE-201"
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"source": "security-advisories@github.com",
"type": "Primary"
}
]
}
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Sightings
| Author | Source | Type | Date |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
- Confirmed: The vulnerability is confirmed from an analyst perspective.
- Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
- Patched: This vulnerability was successfully patched by the user reporting the sighting.
- Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
- Not confirmed: The user expresses doubt about the veracity of the vulnerability.
- Not patched: This vulnerability was not successfully patched by the user reporting the sighting.
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