Vulnerability in Oisf Suricata
CVE-2026-63449
Suricata is a network Intrusion Detection System, Intrusion Prevention System and Network Security Monitoring engine. From 8.0.0 until 8.0.6, the SIP parser in rust/src/sip/parser.rs stores request and response body lengths in 16-bit fields. A SIP body larger than 65,536 bytes can truncate the length and prevent frame:request.body or frame:response.body from exposing the complete body to inspection, allowing content in the omitted portion to evade frame-based detection. This issue is fixed in version 8.0.6.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 3.7 (Low). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N.
EPSS exploit prediction
EPSS: 0.002 (16.1th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 16th percentile — 16.1% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.002 · newest: 0.002 · 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-prqx-q74v-wxhv (Vendor Advisory)
- github.com/OISF/suricata/pull/15807 (Patch)
- github.com/OISF/suricata/commit/499995bf0e5eab34b647ec1024ce65d72c411816 (Patch)
- github.com/OISF/suricata/commit/6f87930aff1e2294e46289cb9cbf4d96d79a209a (Patch)
- github.com/OISF/suricata/releases/tag/suricata-8.0.6 (Release Notes)
- redmine.openinfosecfoundation.org/issues/8582 (Permissions Required)
Frequently asked questions
- What is CVE-2026-63449?
- CVE-2026-63449 is a low-severity vulnerability in Oisf Suricata, classified under CWE-197. CVSS score: 3.7/10. Published 2026-09-18.
- How severe is CVE-2026-63449?
- Low severity. CVSS v3 base score is 3.7 out of 10.