KeePassXC: Out-of-bounds write in browser integration response encryption with oversized database responses
KeePassXC is a cross-platform community-driven port of the Windows application KeePass Password Safe. From 2.3.0 until 2.8.0, KeePassXC browser integration encrypts authorized responses in src/browser/BrowserMessageBuilder.cpp using a fixed 1 MiB output vector even though Botan::Sodium::crypto_box_easy() writes the pla…
Severity medium: primary CNA CVSS 4.1 v4.0 (worst CNA-provided scenario) Not listed in this KEV snapshot. EPSS unavailable for this snapshot.
Published 2026-10-29T16:01:55.635Z. Updated 2026-10-29T16:01:55.635Z.