CVE-2021-26917: Bitmessage Pybitmessage

Medium severity, CVSS 5.5. EPSS: 0.6% chance of exploitation in the next 30 days.

PyBitmessage through 0.6.3.2 allows attackers to write screen captures to Potentially Unwanted Directories via a crafted apinotifypath value. NOTE: the discoverer states "security mitigation may not be necessary as there is no evidence yet that these screen intercepts are actually transported away from the local host." NOTE: it is unclear whether there are any common use cases in which apinotifypath is controlled by an attacker

Affected products

• Bitmessage Pybitmessage: up to and including 0.6.3.2

Published 2021-02-08. Last modified 2026-06-17.