PYSEC-2025-6 Exfiltrates cookies to hardcoded IP address

Not scored Published

The colabrun Python library exfiltrates user cookies to a hardcoded IP address, allowing attackers to steal sensitive session data.

Exploited in the wild
Not known
Login needed
Not needed
Attackable
Over the internet
Victim action needed
Not needed
Fix
None listed

What is PYSEC-2025-6?

PYSEC-2025-6 is a vulnerability in colabrun, published on 26 Feb 2025. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

Published in 2021, the colabrun package is a Python library that exfiltrates user cookies to a hardcoded IP address. The package was found to exfiltrate user data to a hardcoded server, which could be used for malicious purposes.

Which versions are affected by PYSEC-2025-6?

1 open source package ship an affected version, including colabrun.

PackageAffectedFixed in
colabrun PyPIAll versionsNone

How do I fix PYSEC-2025-6?

No fix has been published for PYSEC-2025-6 yet. Limit exposure of the affected software until one is available.

Is PYSEC-2025-6 being exploited?

There is no known exploitation of PYSEC-2025-6 in the wild and no public exploit code.

Sources

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