CVE-2026-116272

MIME::Field::ParamVal versions before 5.521 for Perl do not flag a duplicate boundary parameter whose name contains a nested comment. A parameter written boundary((c))="A" or boundary(\))="A" is stored under that literal name rather than as boundary. A second boundary parameter is then not reported as a duplicate, and MIME::Parser splits the message on it. Readers that skip comments as RFC 5322 allows take the first boundary instead. A remote sender can hide an attachment from a filter that relies on ambiguous_content() while the recipient's mail client shows it.
CVSS

No CVSS.

Configurations

No configuration.

History

28 Oct 2026, 18:17

Type Values Removed Values Added
New CVE

Information

Published : 2026-10-28 18:17

Updated : 2026-10-29 15:11


NVD link : CVE-2026-116272

Mitre link : CVE-2026-116272

CVE.ORG link : CVE-2026-116272


JSON object : View

Products Affected

No product.

CWE
CWE-436

Interpretation Conflict