Linux and Mac releases of the B2 command-line tool version 3.2.0 and below contain a key disclosure vulnerability that, in certain conditions, can be exploited…
CyberXYZ does not call a package safe in absolute terms. It records 1 known vulnerability for b2 (pypi), the worst rated MODERATE, and no malicious-package signal. Whether it is acceptable depends on the version you run.
Does b2 have known vulnerabilities?
Yes. CyberXYZ records 1 known vulnerability for b2 (pypi), the worst rated MODERATE. They are GHSA-8wr4-2wm6-w3pr.
Which version of b2 should I use?
3.2.1 or later clears every advisory recorded for b2 (pypi). Check the release you pick before installing it.
How do I check b2 before installing?
Search b2 in CyberXYZ Check at https://cyberxyz.io/check?q=b2. The xyz Scanner checks a project's dependencies, and CyberXYZ Proxy checks each package as it is installed.
Checked 2026-11-14 at 13:07 UTC. The most recent advisory here was published 2022-02-24. Updated continuously from NVD, GHSA, OSV and CNA feeds.