Uninitialized Memory Exposure Affecting deno_permissions package, versions <0.63.0
Threat Intelligence
Snyk has a proof-of-concept or detailed explanation of how to exploit this vulnerability.
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-RUST-DENOPERMISSIONS-10360245
- published15 Jun 2025
- disclosed4 Jun 2025
- creditUnknown
Introduced: 4 Jun 2025
NewCVE-2025-48934 (opens in a new tab)How to fix?
Upgrade deno_permissions to version 0.63.0 or higher.
Overview
Affected versions of this package are vulnerable to Uninitialized Memory Exposure through the toObject method. An attacker can access all environment variables, including those that should be restricted by the --deny-env option, by invoking this method under specific command configurations. This is only exploitable if the deno run command is used with both --allow-env and --deny-env options specifying environment variables to deny.