🛡️ MAL-2026-12487 — travel-core-utils-object

⚪ Unknown ✅ No Known Exploit OSV
N/A
CVSS Score
0 Low4 Medium7 High9 Critical10

Description

Malicious code in travel-core-utils-object (npm)

Source: amazon-inspector

The package's main entry (index.js) has a side-effect require of _bridge.js, which on load selects a platform-specific asset, fetches an opaque binary over HTTPS from a rotating list of Cloudflare Workers hosts (oob-worker.cf*.workers.dev and *.dl.well1.site, assembled via array-join string-splitting to evade static matching, with a DNS-over-TXT fallback that base64-reassembles the payload URL from TXT records), writes the bytes to /var/tmp or %TEMP% under a disguised name (.cache_<hex> on POSIX, dotnet_diag_<hex>.exe on Windows), chmods 0755, and spawns it detached via /bin/sh -c "<path> &" or cmd. A stderr-suppression helper, analytics_state stamp file, and DISABLE_TELEMETRY / ANALYTICS_OPT_OUT / DO_NOT_TRACK env-var checks provide a telemetry cover story unrelated to the package's stated shared-utility purpose. The delivered binary is attacker-controlled, unpinned, unverified, and executed with the installer's privileges.

Affected software

MAL-2026-12487 is recorded against 1 package.

  • travel-core-utils-object

Timeline and source

Published on 5 August 2026. No public exploit is currently recorded for this entry. Record sourced from OSV.

References

www.npmjs.com (Package)

Details

Severity Unknown
CVSS Score N/A
CVSS Vector N/A
CWE N/A
Public Exploit ✅ No
Source OSV
Published 2026-08-05
Updated 2026-08-12
Modified 2026-08-05
Fix URL N/A

Affected Packages

Software From version Fixed in
travel-core-utils-object — —

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