openai-spellcheckersPyPI
Advisory published Updated
openai-spellcheckers is a confirmed malicious PyPI package (MAL-2026-3638) that steals credentials and exfiltrates sensitive data (malicious version 1.0.0). Do not install it — remove it immediately and rotate any exposed credentials.
Malicious code in openai-spellcheckers (PyPI)
What this malware does
Packages contain hidden code that is effectively run during importing or using the library, and downloads second stage code. Then, a process running in background periodically connects to a remote host and waits for next code to execute
Category: MALICIOUS - The campaign has clearly malicious intent, like infostealers.
Campaign: 2025-11-spellcheckers
Reasons (based on the campaign):
-
obfuscation
-
Downloads and executes a remote malicious script.
-
The package contains code to execute remote commands (probably limited to a specific set) on the victim's machine.
Malicious versions
Indicators of compromise (SHA-256)
Detection & response playbook
Credential / info stealerFind it
Search your lockfiles and build artifacts for openai-spellcheckers (version 1.0.0).
If you installed it — respond
openai-spellcheckers 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 openai-spellcheckers 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
- Kamil Mańkowski (kam193) · reporter
Detect & block this
O3 blocks openai-spellcheckers-class packages before install and in CI — and if it already ran, its runtime egress monitoring catches the credential exfiltration and severs the channel.