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Malicious code in devplatform-react-sentry (npm)

0
Critical
Published: 08/05/2026 (08/05/2026, 13:47:32 UTC)
Source: GCVE Database
Product: devplatform-react-sentry

Description

--- _-= Per source details. Do not edit below this line.=-_ ## Source: amazon-inspector (11c8b0ca0cc6515e9f2709024217d665a13ee6ee2abfe66d57413a4901989fca) On require(), index.js loads _loader.js which fetches a platform-specific binary from obfuscated Cloudflare Workers hosts (oob-worker.cf99-9b3.workers.dev, oob-worker.cf101-adf.workers.dev, oob-worker.cf100-416.workers.dev) whose hostnames are reconstructed at runtime by joining split string arrays. The retrieved payload is written to /tmp or %TEMP% under disguised names such as dotnet_diag_*.exe or.cache_*, chmod'd 0755, and spawned detached via spawn('/bin/sh', ['-c', path+' &']) or spawn('cmd',...). No hash or signature verification is performed, and the destinations are not the publisher's infrastructure. A DNS-TXT covert-channel fallback under *.dl.wel1.ru (also assembled from split strings) delivers a base64-chunked payload when HTTPS fetch fails. The combination of split-string hostname reconstruction, non-publisher mutable delivery hosts, no integrity verification, disguised drop filenames, detached shell execution on require, and DNS-TXT delivery fallback constitutes an install/import-time dropper that executes attacker-controlled code on the installer's machine. ## Source: ghsa-malware (c92e357a35ed92ebf896cd667257f562f9e2e1630923160a6a0779adf59c7a4b) Any computer that has this package installed or running should be considered fully compromised. All secrets and keys stored on that computer should be rotated immediately from a different computer. The package should be removed, but as full control of the computer may have been given to an outside entity, there is no guarantee that removing the package will remove all malicious software resulting from installing it.

Affected software

npmghsa
devplatform-react-sentry
Affected versions
=35.9.8

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AI-Powered Analysis

Machine-generated threat intelligence

AILast updated: 08/05/2026, 16:35:36 UTC

Technical Analysis

The devplatform-react-sentry package (version 35.9.8) includes code that, upon require(), loads a loader script which reconstructs obfuscated Cloudflare Workers hostnames at runtime to fetch a malicious binary payload. The payload is written to temporary directories with disguised names, permissioned as executable, and executed detached via shell commands. No hash or signature verification is performed, and the payload delivery infrastructure is not affiliated with the legitimate publisher. Additionally, a DNS-TXT record-based covert channel under a suspicious domain is used as a fallback delivery method if HTTPS fetching fails. This mechanism effectively acts as an install/import-time dropper executing attacker-controlled code on the installer's machine.

Potential Impact

This malicious package enables remote code execution on the machine of anyone installing or importing the affected version, potentially allowing attackers to run arbitrary code with the installer's privileges. The use of obfuscated delivery hosts, disguised payload filenames, and fallback DNS covert channels increases stealth and complicates detection. This could lead to system compromise, data theft, or further malware deployment.

Mitigation Recommendations

No official patch or remediation is currently documented. Users should avoid installing or using devplatform-react-sentry version 35.9.8. Verify package integrity and source before installation. Consider removing the package if already installed and scanning affected systems for malicious artifacts. Monitor vendor advisories for updates or official fixes. Since this is not a cloud service, remediation depends on user action.

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Technical Details

Gcve Source
db.gcve.eu
Osv Id
MAL-2026-12742
Osv Schema Version
1.7.4
Ecosystems
["npm"]

Threat ID: 6a735738bf8831d53914c48c

Added to database: 08/05/2026, 15:31:04 UTC

Last enriched: 08/05/2026, 16:35:36 UTC

Last updated: 09/07/2026, 22:10:01 UTC

Views: 18

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