polymarket-apisnpm
Advisory published Updated
polymarket-apis is a confirmed malicious npm package (MAL-2026-10067) that steals credentials and exfiltrates sensitive data (malicious version 1.1.0). Do not install it — remove it immediately and rotate any exposed credentials.
Malicious code in polymarket-apis (npm)
What this malware does
The package impersonates the Polymarket brand (name polymarket-apis, author polymarket) but contains no Polymarket API integration. Its exported getPlugin function fetches JSON from https://svganchordev.net/icons/<token> and passes the response's credits field to the JavaScript Function constructor, executing the returned bytes with full Node context (require, module, exports, process, Buffer, __dirname). The remote URL is assembled from split string constants (protocol+separator+domain+path) and the surrounding code is framed as a benign icon/CDN helper (IconProvider, bearrtoken: 'logo') to disguise the eval. Because the fetched content is attacker-controlled and mutable, any caller invocation of the exported API runs arbitrary code on the installer with Node privileges. Declared runtime dependencies (@primno/dpapi, node-machine-id, better-sqlite3) are consistent with Windows credential and browser-data stealer payloads that the remote code can load. Package keywords (react, helper, svg) are inconsistent with the advertised Polymarket SDK purpose, confirming the cover-story framing.
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.
Malicious versions
Indicators of compromise (SHA-256)
Detection & response playbook
Credential / info stealerFind it
Search your lockfiles and build artifacts for polymarket-apis (version 1.1.0).
If you installed it — respond
polymarket-apis is built to steal secrets, so assume every credential the build or runtime could read is compromised. Remove it from your project and lockfile, then rotate ALL exposed secrets — npm/registry tokens, cloud keys, CI/CD secrets, SSH keys, and any .env values — from a known-clean machine. Audit logs for unauthorized use of those credentials.
Did it already run?
If polymarket-apis was installed, its post-install payload may already have run. Removing the package does not undo that — check outbound connections and credential use from the install window onward.
Frequently asked questions
Campaign
References
Credits
- Amazon Inspector · finder
- ReversingLabs · finder
Detect & block this
O3 blocks polymarket-apis-class packages before install and in CI — and if it already ran, its runtime egress monitoring catches the credential exfiltration and severs the channel.