Suricata smtp/mime: incomplete state reset allows detection bypass

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2026-57229
StatePUBLISHED
AssignerGitHub_M
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-09-18 21:17:01 UTC
Updated2026-09-18 21:17:01 UTC
DescriptionSuricata is a network Intrusion Detection System, Intrusion Prevention System and Network Security Monitoring engine. From 8.0.0 until 8.0.6, the SMTP MIME parser in rust/src/mime/smtp.rs does not fully reset state when processing Content-Type: message/rfc822 encapsulation. An outer MIME part's encoding or filename state can leak into the inner message, allowing crafted mail to evade detections based on file.data, file.name, or extracted URLs when SMTP MIME decoding is enabled. This issue is fixed in version 8.0.6.

Risk And Classification

Primary CVSS: v3.1 5.3 MEDIUM from [email protected]

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N

EPSS: 0.004120000 probability, percentile 0.351870000 (date 2026-09-20)

Problem Types: CWE-665 | CWE-665 CWE-665: Improper Initialization

VersionSourceTypeScoreSeverityVector
3.1[email protected]Secondary5.3MEDIUMCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
3.1CNADECLARED5.3MEDIUMCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N

CVSS v3.1 Breakdown

Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
Low
Availability
None

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA OISF Suricata affected >= 8.0.0, < 8.0.6 Not specified

References

ReferenceSourceLinkTags
github.com/OISF/suricata/commit/c0215c7e175b0000ef8450928dd1f3453c48379b [email protected] github.com
github.com/OISF/suricata/commit/4985eb9daea2f765b6ef59a58fa02e5c71c0a77c [email protected] github.com
github.com/OISF/suricata/releases/tag/suricata-8.0.6 [email protected] github.com
redmine.openinfosecfoundation.org/issues/8649 [email protected] redmine.openinfosecfoundation.org
github.com/OISF/suricata/security/advisories/GHSA-ph5p-pm8r-m355 [email protected] github.com
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