Vulnerability in Oisf Suricata
CVE-2026-57229
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.
Vulnerability class: Dirty Pipe (CVE-2022-0847)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 5.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N.
EPSS exploit prediction
EPSS: 0.004 (35.4th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 35th percentile — 35.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.004 · newest: 0.004 · change: 0.000
Affected products
- Oisf Suricata — versions >= 8.0.0, < 8.0.6
Weakness classification (CWE)
References
- github.com/OISF/suricata/security/advisories/GHSA-ph5p-pm8r-m355 (Vendor Advisory)
- github.com/OISF/suricata/commit/4985eb9daea2f765b6ef59a58fa02e5c71c0a77c (Patch)
- github.com/OISF/suricata/commit/c0215c7e175b0000ef8450928dd1f3453c48379b (Patch)
- github.com/OISF/suricata/releases/tag/suricata-8.0.6 (Release Notes)
- redmine.openinfosecfoundation.org/issues/8649 (Permissions Required)
Frequently asked questions
- What is CVE-2026-57229?
- CVE-2026-57229 is a medium-severity vulnerability in Oisf Suricata, classified under Improper Initialization. CVSS score: 5.3/10. Published 2026-09-18.
- How severe is CVE-2026-57229?
- Medium severity. CVSS v3 base score is 5.3 out of 10.