What’s Vulnerable › Vulnerabilities

CVE-2026-63449: Suricata sip: large SIP message bodies can evade detection with frame keyword

• Severity: medium (CVSS 5.3 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.2% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-09-18 · updated 2026-09-28
• Weakness: CWE-197

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 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.

Affected products

• OISF suricata: from 8.0.0 before 8.0.6 — fixed in 8.0.6

How to fix

Upgrade to a fixed version: OISF suricata 8.0.6. Check the vendor advisory for mitigations.

References

• https://github.com/OISF/suricata/commit/499995bf0e5eab34b647ec1024ce65d72c411816
• https://github.com/OISF/suricata/commit/6f87930aff1e2294e46289cb9cbf4d96d79a209a
• https://github.com/OISF/suricata/pull/15807
• https://github.com/OISF/suricata/releases/tag/suricata-8.0.6
• https://github.com/OISF/suricata/security/advisories/GHSA-prqx-q74v-wxhv
• https://redmine.openinfosecfoundation.org/issues/8582

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