Mishandling of comma during folding and unicode-encoding of email headers
During an address list folding when a separating comma ends up on a folded line and that line is to be unicode-encoded then the separator itself is also unicode-encoded. Expected behavior is that the separating comma remains a plan comma. This can result in the address header being misinterpreted by some mail servers.
Severity low: primary CNA CVSS 2.3 v4.0 (worst CNA-provided scenario) Not listed in this KEV snapshot. Forecast present in this snapshot.
Published 2025-02-28T18:59:31.784Z. Updated 2026-07-31T14:03:23.564Z.