CVE-2026-57229
Suricata smtp/mime: incomplete state reset allows detection bypass
CVSS Score
5.3
EPSS Score
0.0%
EPSS Percentile
0th
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.
| CWE | CWE-665 |
| Vendor | oisf |
| Product | suricata |
| Published | Sep 18, 2026 |
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CVSS v3 Breakdown
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
None
Integrity
Low
Availability
None
Affected Versions
OISF / suricata
>= 8.0.0, < 8.0.6
References
github.com: https://github.com/OISF/suricata/security/advisories/GHSA-ph5p-pm8r-m355 github.com: https://github.com/OISF/suricata/commit/4985eb9daea2f765b6ef59a58fa02e5c71c0a77c github.com: https://github.com/OISF/suricata/commit/c0215c7e175b0000ef8450928dd1f3453c48379b github.com: https://github.com/OISF/suricata/releases/tag/suricata-8.0.6 redmine.openinfosecfoundation.org: https://redmine.openinfosecfoundation.org/issues/8649