Malicious code in dotenv-preflight (npm)

CISA KEV is observed exploitation evidence. FIRST EPSS is a dated prediction of exploitation in the next 30 days. Missing scores are unknown. This collector requests predictions only for explicit CVE aliases in the public NuGet archive; Microsoft release views retain their existing prediction scope.

No collected risk observation for these identifiers. This does not establish absence of exploitation or a zero probability.

--- _-= Per source details. Do not edit below this line.=-_ ## Source: amazon-inspector (f8e18dd97225f3e61274667a66297cee2224f99b7c3915e5a5f138028f5d0dd0) The npm package [email protected] presents itself as a dotenv-related preflight utility but ships a single index.js whose contents are heavily obfuscated (hex-prefixed identifiers such as _0x351140, _0x3256d4, _0x3de8a6, _0x2a9875, _0x4d88e3 on line 1, consistent with javascript-obfuscator string-array output). Legitimate dotenv/env-preflight tooling is a few dozen lines of readable JavaScript; wrapping the entire module in a string-array obfuscator has no benign purpose for a package in this category and is the standard concealment technique used to hide credential-harvesting and network exfiltration behavior from casual review. The package name closely resembles the popular dotenv ecosystem, increasing the chance of accidental installation, and the obfuscated body would execute on require() by any consumer that adds this dependency. Semantic tracing of the obfuscated code triggered the provider's malware-output safety filter, which is characteristic of operational credential-theft or exfiltration payloads rather than routine business logic. ## Source: ossf-package-analysis (d8bf491882ff2e9aee1d8ab4959b8aea748223821f721550370dcf9615859d65) The OpenSSF Package Analysis project identified 'dotenv-preflight' @ 1.0.0 (npm) as malicious. It is considered malicious because: - The package communicates with a domain associated with malicious activity.

Source published

29 Sep 2026 13:51:17 UTC

Source modified

1 Oct 2026 06:00:04 UTC

Observed here

24 Oct 2026 13:17:17 UTC

Source terms

OSV · upstream source license applies

Original source record · Cite this exact observation · Complete original publisher JSON

This view projects the publisher's source fields for reading; the original JSON retains additional fields and CVE enrichment containers. Attribution: osv · OSV · upstream source license applies. Source text is retained; field grouping and change labels are provided by ChangeIntel.