🛡️ MAL-2026-5525 — web3.js

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

Description

Malicious code in @solana-labs/web3.js (npm)

Source: amazon-inspector

Package @solana-labs/web3.js impersonates the legitimate @solana/web3.js and re-exports it as cover while running a malicious postinstall (node install.js). On npm install, install.js performs sandbox-evasion checks (hostname pattern scoring for Docker/AWS/CI runners, /proc/uptime, presence of strace/tcpdump/auditd, AWS metadata 169.254.169.254, security-tooling dependencies) and aborts if it detects analysis. Otherwise it enumerates installer secrets — ~/.ssh/id_rsa, ~/.aws/credentials, ~/.config/solana/id.json, .env files, and scrapes process.env for KEY/SECRET/MNEMONIC/NPM/GITHUB tokens — and harvests crypto material including ETH private keys (/0x[a-fA-F0-9]{64}/), Solana 64-byte arrays, and AWS keys. Stolen data is tagged [ETH]/[SOLANA]/[AWS]/[SSH]/[NPM]/[GITHUB] and exfiltrated to api.telegram.org/bot<token>/... using XOR-obfuscated bot token, chat ID, and HMAC auth secret embedded in install.js. install.js then enters a long-poll loop against Telegram getUpdates accepting commands /keys, /ssh, /env, /wallet, /sh <cmd>, and bare text, executing them via execSync (PowerShell on Windows) and returning output to the attacker — a full reverse-shell C2 backdoor. Persistence is established via a @reboot sleep 90 && node <path> crontab entry. A hardcoded Solana drain address D4hGgKKaBFZV1NUTWvYRwbpu8HHr3qmDfHyKCTLqbaE7 is present for wallet theft.

Affected software

MAL-2026-5525 is recorded against 1 package.

  • @solana-labs/web3.js

Timeline and source

Published on 10 June 2026 and last revised on 5 August 2026. No public exploit is currently recorded for this entry. Record sourced from OSV.

References

www.npmjs.com (Package)
www.npmjs.com (Package)
www.npmjs.com (Package)
www.npmjs.com (Package)
www.npmjs.com (Package)
www.npmjs.com (Package)
research.jfrog.com (Web)
www.npmjs.com (Package)
www.npmjs.com (Package)
www.npmjs.com (Package)
www.npmjs.com (Package)
www.npmjs.com (Package)
www.npmjs.com (Package)
www.npmjs.com (Package)
www.npmjs.com (Package)

Details

Severity Unknown
CVSS Score N/A
CVSS Vector N/A
CWE N/A
Public Exploit ✅ No
Source OSV
Published 2026-06-10
Updated 2026-08-12
Modified 2026-08-05
Fix URL N/A

Affected Packages

Software From version Fixed in
@solana-labs/web3.js

References

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