GCVE-110-OSM-2026-5419

This package self-identifies as a dependency-confusion attribution PoC targeting Ubiquiti, referencing a HackerOne profile (rcl-lore), and the code commentary is explicit about the research intent and data-minimization rationale ('NO secrets,' 'Identity fields ONLY'). However, the actual runtime behavior is functionally a supply-chain exfiltration payload: on preinstall it collects hostname, username, cwd, internal RFC1918 IPs, and CI pipeline identifiers (GITHUB_REPOSITORY, CODEBUILD_BUILD_ARN, AWS_REGION, etc.) then exfiltrates them via both DNS subdomain encoding and HTTP GET to a researcher-controlled OAST endpoint (d8hjn6ap4rnta9vj5ve0jk11seb4k3kci.oast.me). The inflated version number (99.0.0) is a textbook dependency-confusion hijack trigger. Because the package explicitly self-identifies as a bug bounty PoC with a linked HackerOne contact and the exfil destination is an OAST domain tied to the stated researcher rather than a threat-actor C2, this most likely is a legitimate authorized research submission — but the collection of CI environment markers (including AWS and GCP identifiers) and internal IPs goes materially beyond benign attribution pinging and warrants noting. ENTRY index.js (install-hook: node index.js || true) - Install Hook Executes Local JS File in package.json DESTINATION - custom-c2: d8hjn6ap4rnta9vj5ve0jk11seb4k3kci.oast.me (primary, plaintext) in index.js EXFIL - OAST/Interactsh Exfiltration in index.js: ".oast.me" - Data Encoding for Exfiltration in index.js: "Buffer.from(full, 'utf8').toString('base64')" - Network Request in index.js: "https.get(" - System Information Collection in index.js: "os.userInfo()" - DNS Lookup in index.js: "dns.resolve(" - Suspicious Domain in index.js: "oast.me" ADDITIONAL FINDINGS - Platform Detection with Data Collection in index.js: "JSON.stringify({ pkg: PKG, hos" PAYLOAD FILES index.js INDICATORS (IOCs) - urls: https://hackerone.com/rcl-lore - domains: hackerone.com - payloadFileHash: 608f98f84dd94c3261ec0250d2bc86fff45e2b5bdd574a94b7648d4d996844bb