django-b64-imgPyPI
Advisory published Updated
django-b64-img is a confirmed malicious PyPI package (MAL-2026-3413) that steals credentials and exfiltrates sensitive data (malicious version 1.1). Do not install it — remove it immediately and rotate any exposed credentials.
Malicious code in django-b64-img (PyPI)
What this malware does
The package provides a special image-storing field for Django REST Framework based on a legitimate implementation from the Hipo/drf-extra-fields repository. The malicious modification appends the cloud credentials and full settings values to the serialized form of specific image types. This way, an attacker can retrieve sensitive values by downloading back once uploaded image.
Category: MALICIOUS - The campaign has clearly malicious intent, like infostealers.
Campaign: 2026-05-old-django-b64-img
Reasons (based on the campaign):
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exfiltration-credentials
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obfuscation
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backdoor
Malicious versions
Indicators of compromise (SHA-256)
Detection & response playbook
Credential / info stealerFind it
Search your lockfiles and build artifacts for django-b64-img (version 1.1).
If you installed it — respond
django-b64-img 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 django-b64-img 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 django-b64-img-class packages before install and in CI — and if it already ran, its runtime egress monitoring catches the credential exfiltration and severs the channel.