Login Request a demo
Medium severity · published Sep 18, 2026
CVE-2026-63449
Suricata sip: large SIP message bodies can evade detection with frame keyword
5.3
CVSS
0.2%
EPSS
No
On KEV
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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
None
Integrity
Low
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.2% · higher than 16% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
SU
suricata · OISF
>= 8.0.0, < 8.0.6 · source: vendor, NVD
Affected product
SU
suricata
OISF
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-63449
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-63449
Patch
https://github.com/OISF/suricata/commit/499995bf0e5eab34b647ec1024ce65d72c411816
Patch
https://github.com/OISF/suricata/commit/6f87930aff1e2294e46289cb9cbf4d96d79a209a
Patch
https://github.com/OISF/suricata/pull/15807
Release Notes
https://github.com/OISF/suricata/releases/tag/suricata-8.0.6
Vendor Advisory
https://github.com/OISF/suricata/security/advisories/GHSA-prqx-q74v-wxhv
Permissions Required
https://redmine.openinfosecfoundation.org/issues/8582
More from suricata
9.8
CVE-2026-22262
Suricata datasets: stack overflow when saving a set
9.8
CVE-2023-35853
In Suricata before 6.0.13, an adversary who controls an external source of Lua rules may be able to execute Lua code
9.8
CVE-2021-37592
Suricata before 5.0.8 and 6.x before 6.0.4 allows TCP evasion via a client with a crafted TCP/IP stack that can send a certain sequence of segments
9.8
CVE-2018-10244
Suricata version 4.0.4 incorrectly handles the parsing of an EtherNet/IP PDU
9.4
CVE-2026-94084
Suricata before 8.0.7 has an Http2ThreadMultiBuf use-after-free when a transaction is inspected by rules that use http.response_header with and without a transform