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Vulnerability · Published Sep 18, 2026 · Assigned by GitHub_M

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

Low 3.7

In plain English

A low-severity security flaw in suricata from OISF. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 16% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS 3.1)3.7Low
Exploit odds (30 days)0.2%top 83.8% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known

Official 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 packages & fixed versions

EcosystemPackageFixed inAdvisory
Debian:13suricatano fix listedDEBIAN-CVE-2026-63449
Debian:14suricata1:8.0.6-1DEBIAN-CVE-2026-63449
Ubuntu:22.04:LTSsuricatano fix listedUBUNTU-CVE-2026-63449
Ubuntu:24.04:LTSsuricatano fix listedUBUNTU-CVE-2026-63449
Ubuntu:26.04:LTSsuricatano fix listedUBUNTU-CVE-2026-63449

Affected products (as reported)

VendorProductVersions
OISF suricata >= 8.0.0, < 8.0.6

Weakness: CWE-197 · Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N

References