Upstream information

CVE-2026-116266 at MITRE

Description

MIME::Head versions from 5.518 before 5.521 for Perl decode a partly encoded multipart boundary without flagging the parse as ambiguous.

The multipart_boundary() method decodes RFC 2047 encoded words anywhere in the boundary, but the ambiguity check only fires when the whole value is one encoded word. A boundary such as abc=?us-ascii?Q?def?= is used as abcdef, and ambiguous_content() returns false.

Encoded words are not allowed in parameters, so other mail readers split the message on the literal value. A remote sender can hide an attachment from a filter that relies on ambiguous_content() while the recipient's mail client shows it.

SUSE information

Overall state of this security issue: Resolved

This issue is currently rated as having moderate severity.

CVSS v3 Scores
CVSS detail SUSE
Base Score 5.3
Vector CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
Attack Vector Network
Attack Complexity Low
Privileges Required None
User Interaction None
Scope Unchanged
Confidentiality Impact None
Integrity Impact Low
Availability Impact None
CVSSv3 Version 3.1
CVSS v4 Scores
CVSS detail SUSE
Base Score 6.9
Vector CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N
Attack Vector Network
Attack Complexity Low
Attack Requirements None
Privileges Required None
User Interaction None
Vulnerable System Confidentiality Impact None
Vulnerable System Integrity Impact Low
Vulnerable System Availability Impact None
Subsequent System Confidentiality Impact None
Subsequent System Integrity Impact None
Subsequent System Availability Impact None
CVSSv4 Version 4.0
SUSE Bugzilla entry: 1288721 [NEW]

No SUSE Security Announcements cross referenced.


Status of this issue by product and package

Please note that this evaluation state might be work in progress, incomplete or outdated. Also information for service packs in the LTSS phase is only included for issues meeting the LTSS criteria. If in doubt, feel free to contact us for clarification. The updates are grouped by state of their lifecycle. SUSE product lifecycles are documented on the lifecycle page.

Product(s) Source package State
Products under general support and receiving all security fixes.
SUSE Linux Enterprise Desktop 15 SP7 perl-MIME-tools Not affected
SUSE Linux Enterprise High Performance Computing 12 perl-MIME-tools Not affected
SUSE Linux Enterprise Module for Basesystem 15 SP7 perl-MIME-tools Not affected
SUSE Linux Enterprise Server 15 SP7 perl-MIME-tools Not affected
SUSE Linux Enterprise Server for SAP Applications 15 SP7 perl-MIME-tools Not affected
Products under Long Term Service Pack support and receiving important and critical security fixes.
SUSE Linux Enterprise High Performance Computing 12 SP5 perl-MIME-tools Not affected
SUSE Linux Enterprise High Performance Computing 15 SP4-LTSS perl-MIME-tools Not affected
SUSE Linux Enterprise High Performance Computing 15 SP5-LTSS perl-MIME-tools Not affected
SUSE Linux Enterprise Module for Basesystem 15 SP4 perl-MIME-tools Not affected
SUSE Linux Enterprise Server 12 SP5 perl-MIME-tools Not affected
SUSE Linux Enterprise Server 12 SP5-LTSS perl-MIME-tools Not affected
SUSE Linux Enterprise Server 15 SP4-LTSS perl-MIME-tools Not affected
SUSE Linux Enterprise Server 15 SP5-LTSS perl-MIME-tools Not affected
SUSE Linux Enterprise Server 15 SP6-LTSS perl-MIME-tools Not affected
SUSE Linux Enterprise Server LTSS Extended Security 12 SP5 perl-MIME-tools Not affected
SUSE Linux Enterprise Server for SAP Applications 15 SP4 perl-MIME-tools Not affected
SUSE Linux Enterprise Server for SAP Applications 15 SP5 perl-MIME-tools Not affected
SUSE Linux Enterprise Server for SAP Applications 15 SP6 perl-MIME-tools Not affected
Products past their end of life and not receiving proactive updates anymore.
HPE Helion OpenStack 8 perl-MIME-tools Not affected
SUSE CaaS Platform 4.0 perl-MIME-tools Not affected
SUSE Enterprise Storage 6 perl-MIME-tools Not affected
SUSE Enterprise Storage 7 perl-MIME-tools Not affected
SUSE Enterprise Storage 7.1 perl-MIME-tools Not affected
SUSE Linux Enterprise Desktop 12 perl-MIME-tools Not affected
SUSE Linux Enterprise Desktop 12 SP1 perl-MIME-tools Not affected
SUSE Linux Enterprise Desktop 12 SP2 perl-MIME-tools Not affected
SUSE Linux Enterprise Desktop 12 SP3 perl-MIME-tools Not affected
SUSE Linux Enterprise Desktop 12 SP4 perl-MIME-tools Not affected
SUSE Linux Enterprise Desktop 15 perl-MIME-tools Not affected
SUSE Linux Enterprise Desktop 15 SP1 perl-MIME-tools Not affected
SUSE Linux Enterprise Desktop 15 SP2 perl-MIME-tools Not affected
SUSE Linux Enterprise Desktop 15 SP3 perl-MIME-tools Not affected
SUSE Linux Enterprise Desktop 15 SP4 perl-MIME-tools Not affected
SUSE Linux Enterprise Desktop 15 SP5 perl-MIME-tools Not affected
SUSE Linux Enterprise Desktop 15 SP6 perl-MIME-tools Not affected
SUSE Linux Enterprise High Performance Computing 12 SP1 perl-MIME-tools Not affected
SUSE Linux Enterprise High Performance Computing 12 SP2 perl-MIME-tools Not affected
SUSE Linux Enterprise High Performance Computing 12 SP3 perl-MIME-tools Not affected
SUSE Linux Enterprise High Performance Computing 12 SP4 perl-MIME-tools Not affected
SUSE Linux Enterprise High Performance Computing 15 perl-MIME-tools Not affected
SUSE Linux Enterprise High Performance Computing 15 SP1 perl-MIME-tools Not affected
SUSE Linux Enterprise High Performance Computing 15 SP1-ESPOS perl-MIME-tools Not affected
SUSE Linux Enterprise High Performance Computing 15 SP1-LTSS perl-MIME-tools Not affected
SUSE Linux Enterprise High Performance Computing 15 SP2 perl-MIME-tools Not affected
SUSE Linux Enterprise High Performance Computing 15 SP2-ESPOS perl-MIME-tools Not affected
SUSE Linux Enterprise High Performance Computing 15 SP2-LTSS perl-MIME-tools Not affected
SUSE Linux Enterprise High Performance Computing 15 SP3 perl-MIME-tools Not affected
SUSE Linux Enterprise High Performance Computing 15 SP3-ESPOS perl-MIME-tools Not affected
SUSE Linux Enterprise High Performance Computing 15 SP3-LTSS perl-MIME-tools Not affected
SUSE Linux Enterprise High Performance Computing 15 SP4 perl-MIME-tools Not affected
SUSE Linux Enterprise High Performance Computing 15 SP4-ESPOS perl-MIME-tools Not affected
SUSE Linux Enterprise High Performance Computing 15 SP5 perl-MIME-tools Not affected
SUSE Linux Enterprise High Performance Computing 15 SP5-ESPOS perl-MIME-tools Not affected
SUSE Linux Enterprise High Performance Computing 15-ESPOS perl-MIME-tools Not affected
SUSE Linux Enterprise High Performance Computing 15-LTSS perl-MIME-tools Not affected
SUSE Linux Enterprise Module for Basesystem 15 perl-MIME-tools Not affected
SUSE Linux Enterprise Module for Basesystem 15 SP1 perl-MIME-tools Not affected
SUSE Linux Enterprise Module for Basesystem 15 SP2 perl-MIME-tools Not affected
SUSE Linux Enterprise Module for Basesystem 15 SP3 perl-MIME-tools Not affected
SUSE Linux Enterprise Module for Basesystem 15 SP5 perl-MIME-tools Not affected
SUSE Linux Enterprise Module for Basesystem 15 SP6 perl-MIME-tools Not affected
SUSE Linux Enterprise Point of Sale 12 SP2-CLIENT perl-MIME-tools Not affected
SUSE Linux Enterprise Real Time 15 SP2 perl-MIME-tools Not affected
SUSE Linux Enterprise Real Time 15 SP3 perl-MIME-tools Not affected
SUSE Linux Enterprise Real Time 15 SP4 perl-MIME-tools Not affected
SUSE Linux Enterprise Server 12 perl-MIME-tools Not affected
SUSE Linux Enterprise Server 12 SP1 perl-MIME-tools Not affected
SUSE Linux Enterprise Server 12 SP1-LTSS perl-MIME-tools Not affected
SUSE Linux Enterprise Server 12 SP2 perl-MIME-tools Not affected
SUSE Linux Enterprise Server 12 SP2-BCL perl-MIME-tools Not affected
SUSE Linux Enterprise Server 12 SP2-ESPOS perl-MIME-tools Not affected
SUSE Linux Enterprise Server 12 SP2-LTSS perl-MIME-tools Not affected
SUSE Linux Enterprise Server 12 SP3 perl-MIME-tools Not affected
SUSE Linux Enterprise Server 12 SP3-BCL perl-MIME-tools Not affected
SUSE Linux Enterprise Server 12 SP3-ESPOS perl-MIME-tools Not affected
SUSE Linux Enterprise Server 12 SP3-LTSS perl-MIME-tools Not affected
SUSE Linux Enterprise Server 12 SP4 perl-MIME-tools Not affected
SUSE Linux Enterprise Server 12 SP4-ESPOS perl-MIME-tools Not affected
SUSE Linux Enterprise Server 12 SP4-LTSS perl-MIME-tools Not affected
SUSE Linux Enterprise Server 12-LTSS perl-MIME-tools Not affected
SUSE Linux Enterprise Server 15 perl-MIME-tools Not affected
SUSE Linux Enterprise Server 15 SP1 perl-MIME-tools Not affected
SUSE Linux Enterprise Server 15 SP1-BCL perl-MIME-tools Not affected
SUSE Linux Enterprise Server 15 SP1-LTSS perl-MIME-tools Not affected
SUSE Linux Enterprise Server 15 SP2 perl-MIME-tools Not affected
SUSE Linux Enterprise Server 15 SP2-BCL perl-MIME-tools Not affected
SUSE Linux Enterprise Server 15 SP2-LTSS perl-MIME-tools Not affected
SUSE Linux Enterprise Server 15 SP3 perl-MIME-tools Not affected
SUSE Linux Enterprise Server 15 SP3-BCL perl-MIME-tools Not affected
SUSE Linux Enterprise Server 15 SP3-LTSS perl-MIME-tools Not affected
SUSE Linux Enterprise Server 15 SP4 perl-MIME-tools Not affected
SUSE Linux Enterprise Server 15 SP5 perl-MIME-tools Not affected
SUSE Linux Enterprise Server 15 SP6 perl-MIME-tools Not affected
SUSE Linux Enterprise Server 15-LTSS perl-MIME-tools Not affected
SUSE Linux Enterprise Server for Raspberry Pi 12 SP2 perl-MIME-tools Not affected
SUSE Linux Enterprise Server for SAP Applications 12 SP1 perl-MIME-tools Not affected
SUSE Linux Enterprise Server for SAP Applications 12 SP2 perl-MIME-tools Not affected
SUSE Linux Enterprise Server for SAP Applications 12 SP3 perl-MIME-tools Not affected
SUSE Linux Enterprise Server for SAP Applications 12 SP4 perl-MIME-tools Not affected
SUSE Linux Enterprise Server for SAP Applications 15 perl-MIME-tools Not affected
SUSE Linux Enterprise Server for SAP Applications 15 SP1 perl-MIME-tools Not affected
SUSE Linux Enterprise Server for SAP Applications 15 SP2 perl-MIME-tools Not affected
SUSE Linux Enterprise Server for SAP Applications 15 SP3 perl-MIME-tools Not affected
SUSE Manager Proxy 4.0 perl-MIME-tools Not affected
SUSE Manager Proxy 4.1 perl-MIME-tools Not affected
SUSE Manager Proxy 4.2 perl-MIME-tools Not affected
SUSE Manager Proxy 4.3 perl-MIME-tools Not affected
SUSE Manager Proxy LTS 4.3 perl-MIME-tools Not affected
SUSE Manager Retail Branch Server 4.0 perl-MIME-tools Not affected
SUSE Manager Retail Branch Server 4.1 perl-MIME-tools Not affected
SUSE Manager Retail Branch Server 4.2 perl-MIME-tools Not affected
SUSE Manager Retail Branch Server 4.3 perl-MIME-tools Not affected
SUSE Manager Retail Branch Server LTS 4.3 perl-MIME-tools Not affected
SUSE Manager Server 4.0 perl-MIME-tools Not affected
SUSE Manager Server 4.1 perl-MIME-tools Not affected
SUSE Manager Server 4.2 perl-MIME-tools Not affected
SUSE Manager Server 4.3 perl-MIME-tools Not affected
SUSE Manager Server LTS 4.3 perl-MIME-tools Not affected
SUSE OpenStack Cloud 7 perl-MIME-tools Not affected
SUSE OpenStack Cloud 8 perl-MIME-tools Not affected
SUSE OpenStack Cloud 9 perl-MIME-tools Not affected
SUSE OpenStack Cloud Crowbar 8 perl-MIME-tools Not affected
SUSE OpenStack Cloud Crowbar 9 perl-MIME-tools Not affected
openSUSE Leap 15.3 perl-MIME-tools Not affected
openSUSE Leap 15.4 perl-MIME-tools Not affected
openSUSE Leap 15.5 perl-MIME-tools Not affected
openSUSE Leap 15.6 perl-MIME-tools Not affected


SUSE Timeline for this CVE

CVE page created: Thu Oct 29 12:58:36 2026
CVE page last modified: Thu Oct 29 18:01:06 2026