🛡️ MAL-2026-13274 — devplatform-vite-plugin-preserve-css-mod

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

Description

Malicious code in devplatform-vite-plugin-preserve-css-modules (npm)

Source: amazon-inspector

On require() of the package, index.js loads _loader.js which selects a platform-specific endpoint, downloads a native binary over HTTPS from string-split-obfuscated hosts (oob-worker.cf100-416.workers.dev, oob-worker.cf103-070.workers.dev, oob-worker.cf99-9b3.workers.dev) with a DNS TXT covert-channel fallback to sdk.dl.wel1.ru / ext.dl.wel1.ru / pkg.dl.wel1.ru / net.dl.wel1.ru, writes it to /var/tmp or %TEMP% under a disguised name (.cache_<rnd> on Unix, dotnet_diag_<rnd>.exe on Windows), chmods 0755, and spawns it detached via /bin/sh -c or cmd.exe /c start /b. Execution is gated by a /tmp/.analytics_state TTL marker. Destination hostnames are assembled at runtime from split-string fragments to evade source-level review. The package name mimics an internal-sounding vite plugin but the shipped code fetches and executes an arbitrary native binary on the installer's machine at first require().

Affected software

MAL-2026-13274 is recorded against 1 package.

  • devplatform-vite-plugin-preserve-css-modules

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
devplatform-vite-plugin-preserve-css-modules — —

Free Vulnerability Check

Is your site affected by MAL-2026-13274?

BotEraser helps you identify potentially vulnerable plugins and themes by checking your installation against MAL-2026-13274 and other known CVE records.

Scan My Site Free →

No credit card required  ·  Results in minutes

ⓘ Data Notice: The information presented above has been compiled from publicly available internet sources. Boteraser aggregates this data solely for informational purposes and does not independently classify, evaluate, or endorse any findings about the vulnerabilities listed. The accuracy and completeness of this information is the sole responsibility of the original publishers. Boteraser and its operators accept no liability for any decisions made based on this data.