EUVD-2026-69609

Mail: Email address spoofing via malformed RFC 2047 encoded-words...

GHSA-MVXR-6M87-MV2Q Mail: Email address spoofing via malformed RFC 2047 encoded-words

Summary Mail::Utilities.qvaluedecode and Mail::Utilities.bvaluedecode decoded only the first RFC 2047 encoded-word in a string and used an overly greedy pattern to match the charset token. A crafted, malformed encoded-word embedded in an address display name or local part could cause the decoded...

CVE-2026-63435

Mail is an internet library for Ruby designed to handle email generation, parsing, and sending. Prior to 2.9.1, Mail::Utilities.qvaluedecode and Mail::Utilities.bvaluedecode used a single Stringmatch and an overly greedy charset capture to decode only the first RFC 2047 encoded-word and mishandle...

PT-2026-84460

Name of the Vulnerable Software and Affected Versions Mail versions prior to 2.9.1 Description Mail is an internet library for Ruby used for email generation, parsing, and sending. The functions q value decode and b value decode within Mail::Utilities use a single Stringmatch and an overly greedy...

Improper Validation of Syntactic Correctness of Input

Overview Affected versions of this package are vulnerable to Improper Validation of Syntactic Correctness of Input through qvaluedecode and bvaluedecode in lib/mail/utilities.rb. An attacker can make a display name or local part decode to a different address than intended by supplying a malformed...

bogofilter -- RFC 2047 decoder denial-of-service vulnerability

The bogofilter team has been provided with a test case of a malformatted non-conformant RFC-2047 encoded word that can cause bogofilter versions 0.92.7 and prior to try to write a NUL byte into a memory location that is either one byte past the end of a flex buffer or to a location that is the...