Incorrect Authorization Affecting deno package, versions <2.8.1
Threat Intelligence
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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- published27 Jun 2026
- disclosed16 Jun 2026
- creditfallintoplace
Introduced: 16 Jun 2026
NewCVE-2026-49983 (opens in a new tab)How to fix?
Upgrade deno to version 2.8.1 or higher.
Overview
deno is an a simple, modern and secure runtime for JavaScript and TypeScript that uses V8 and is built in Rust.
Affected versions of this package are vulnerable to Incorrect Authorization via the process.loadEnvFile function. An attacker can modify environment variables without proper authorization by supplying a crafted or attacker-controlled .env file when only read permissions are granted. This is only exploitable if the .env file path can be controlled or modified by a less-trusted party and the application relies on restricted environment variable access enforced by permission flags.