Description
Suricata 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.
Published: 2026-09-18
Score: 5.3 Medium
EPSS: n/a
KEV: No
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Remediation

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History

Fri, 18 Sep 2026 21:30:00 +0000

Type Values Removed Values Added
Description Suricata 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.
Title Suricata smtp/mime: incomplete state reset allows detection bypass
Weaknesses CWE-665
References
Metrics cvssV3_1

{'score': 5.3, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N'}


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cve-icon MITRE

Status: PUBLISHED

Assigner: GitHub_M

Published:

Updated: 2026-09-18T20:18:38.625Z

Reserved: 2026-06-24T02:21:33.811Z

Link: CVE-2026-57229

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Received

Published: 2026-09-18T21:17:01.537

Modified: 2026-09-18T21:17:01.537

Link: CVE-2026-57229

cve-icon Redhat

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cve-icon OpenCVE Enrichment

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Weaknesses