---
title: "CVE-2026-63449\n    | Ubuntu"
description: Ubuntu is an open source software operating system that runs from the
  desktop, to the cloud, to all your internet connected things.
url: https://ubuntu.com/security/CVE-2026-63449?format=md
keywords: index, follow
---

# CVE-2026-63449

Publication date 21 September 2026

Last updated 21 September 2026

---

Ubuntu priority

**Medium**

[Why this priority?](https://ubuntu.com/security/cves/about#priority )

## Cvss 3 Severity Score

**3.7 · Low**

[Score breakdown](https://ubuntu.com/security/CVE-2026-63449?format=md#impact-score)

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## 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.

## Status

Show unmaintained releases

| Package | Ubuntu Release | Status |
| --- | --- | --- |
| suricata | 26.04 LTS resolute | Needs evaluation |
| 24.04 LTS noble | Needs evaluation |
| 22.04 LTS jammy | Needs evaluation |
| 18.04 LTS bionic | Needs evaluation |
| 16.04 LTS xenial | Needs evaluation |

---

* [How can I get the fixes?](https://ubuntu.com/security/cves/about#security)
* [What do statuses mean?](https://ubuntu.com/security/cves/about#statuses)

## Severity score breakdown

CVSS version:
CVSS v3.0

**Base score**

3.7 · Low

* Base metrics

  | Parameter | Value |
  | --- | --- |
  | Attack vector | Network |
  | Attack complexity | High |
  | Privileges required | None |
  | User interaction | None |
  | Scope | Unchanged |
  | Confidentiality impact | None |
  | Integrity impact | Low |
  | Availability impact | None |
* Scores

  | Parameter | Value |
  | --- | --- |
  | Base score | 3.7 · Low |
  | Exploitability score | - |
  | Impact score | - |

**Vector:** CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N

## References

* [MITRE](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2026-63449)
* [NVD](https://nvd.nist.gov/vuln/detail/CVE-2026-63449)
* [Launchpad](https://launchpad.net/bugs/cve/CVE-2026-63449)
* [Debian](https://security-tracker.debian.org/tracker/CVE-2026-63449)

### Other references

* <https://www.cve.org/CVERecord?id=CVE-2026-63449>
* <https://github.com/OISF/suricata/security/advisories/GHSA-prqx-q74v-wxhv>
* <https://github.com/OISF/suricata/pull/15807>
* <https://github.com/OISF/suricata/commit/499995bf0e5eab34b647ec1024ce65d72c411816>
* <https://github.com/OISF/suricata/commit/6f87930aff1e2294e46289cb9cbf4d96d79a209a>
* <https://github.com/OISF/suricata/releases/tag/suricata-8.0.6>
* <https://redmine.openinfosecfoundation.org/issues/8582>