CVE-2026-63449 Suricata sip: large SIP message bodies can evade detection with frame keyword
Attackers can evade Suricata's frame-based detection by sending SIP messages larger than 65KB, bypassing security monitoring.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2026-63449?
CVE-2026-63449 is a low-severity vulnerability in Oisf Suricata, published on 18 Sep 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
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.
Weakness: CWE-197
Which versions are affected by CVE-2026-63449?
It affects 1 product.
Products include Oisf Suricata.
How do I fix CVE-2026-63449?
Upgrade to a fixed version.
Is CVE-2026-63449 being exploited?
There is no known exploitation of CVE-2026-63449 in the wild and no public exploit code.
Other vulnerabilities in Oisf Suricata
Sources
Also known as DEBIAN-CVE-2026-63449, GHSA-prqx-q74v-wxhv, UBUNTU-CVE-2026-63449.