Malicious code in claims-auth-api-adapters (npm)
The npm package 'claims-auth-api-adapters' version 35.3.3 contains malicious code that unconditionally loads a runtime module which fetches and executes an attacker-controlled binary payload. This payload is retrieved from obfuscated Cloudflare workers.dev hosts and fallback DNS TXT records, then saved and executed on the host system, masquerading as telemetry. Any process requiring this package will execute this malicious code, leading to remote code execution on the host.
AI Analysis
Technical Summary
The 'claims-auth-api-adapters' npm package version 35.3.3 includes a malicious runtime loader that fetches an OS/architecture-specific binary payload from obfuscated Cloudflare workers.dev domains and DNS TXT records. The binary is saved to temporary directories with hidden or misleading filenames and executed detached from the parent process. Environment variables and filenames are used to disguise the behavior as telemetry. This results in arbitrary attacker-controlled code execution on any host that requires this package, either directly or transitively.
Potential Impact
Any system that installs or requires 'claims-auth-api-adapters' version 35.3.3 will execute attacker-controlled code, potentially leading to full system compromise. The malicious payload is fetched dynamically and executed with user-level permissions, enabling remote code execution without user consent or awareness.
Mitigation Recommendations
No official patch or remediation is currently documented. Users should immediately avoid using 'claims-auth-api-adapters' version 35.3.3 and remove it from their environments. Monitor dependency trees for this package and replace it with a trusted alternative. Since no patch is confirmed, check vendor advisories or npm security notices for updates.
Malicious code in claims-auth-api-adapters (npm)
Description
The npm package 'claims-auth-api-adapters' version 35.3.3 contains malicious code that unconditionally loads a runtime module which fetches and executes an attacker-controlled binary payload. This payload is retrieved from obfuscated Cloudflare workers.dev hosts and fallback DNS TXT records, then saved and executed on the host system, masquerading as telemetry. Any process requiring this package will execute this malicious code, leading to remote code execution on the host.
Affected software
Run on your own infrastructure? Check whether these packages are installed with threat-finder — our free open-source scanner.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
The 'claims-auth-api-adapters' npm package version 35.3.3 includes a malicious runtime loader that fetches an OS/architecture-specific binary payload from obfuscated Cloudflare workers.dev domains and DNS TXT records. The binary is saved to temporary directories with hidden or misleading filenames and executed detached from the parent process. Environment variables and filenames are used to disguise the behavior as telemetry. This results in arbitrary attacker-controlled code execution on any host that requires this package, either directly or transitively.
Potential Impact
Any system that installs or requires 'claims-auth-api-adapters' version 35.3.3 will execute attacker-controlled code, potentially leading to full system compromise. The malicious payload is fetched dynamically and executed with user-level permissions, enabling remote code execution without user consent or awareness.
Mitigation Recommendations
No official patch or remediation is currently documented. Users should immediately avoid using 'claims-auth-api-adapters' version 35.3.3 and remove it from their environments. Monitor dependency trees for this package and replace it with a trusted alternative. Since no patch is confirmed, check vendor advisories or npm security notices for updates.
Technical Details
- Gcve Source
- db.gcve.eu
- Osv Id
- MAL-2026-12607
- Osv Schema Version
- 1.7.4
- Aliases
- []
- Ecosystems
- ["npm"]
- Database Specific Severity
- null
- Cvss Version
- null
Threat ID: 6a735733bf8831d53913d148
Added to database: 08/05/2026, 15:30:59 UTC
Last enriched: 08/05/2026, 16:06:08 UTC
Last updated: 08/05/2026, 16:06:08 UTC
Views: 2
Community Reviews
0 reviewsCrowdsource mitigation strategies, share intel context, and vote on the most helpful responses. Sign in to add your voice and help keep defenders ahead.
Want to contribute mitigation steps or threat intel context? Sign in or create an account to join the community discussion.
Actions
Updates to AI analysis require Pro Console access. Upgrade inside Console → Billing.
External Links
Need more coverage?
Upgrade to Pro Console for AI refresh and higher limits.
For incident response and remediation, OffSeq services can help resolve threats faster.
Latest Threats
Check if your credentials are on the dark web
Instant breach scanning across billions of leaked records. Free tier available.