Vulnerability · Published Sep 20, 2026 · Assigned by mitre
CVE-2026-94084
Critical 9.4
In plain English
A critical-severity use-after-free 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 0.5% (higher than 46% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Severity (CVSS 3.1)9.4Critical
Exploit odds (30 days)0.5%top 54.4% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official description
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.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian:13 | suricata | no fix listed | DEBIAN-CVE-2026-94084 |
| Debian:14 | suricata | 1:8.0.7-1 | DEBIAN-CVE-2026-94084 |
| Ubuntu:22.04:LTS | suricata | no fix listed | UBUNTU-CVE-2026-94084 |
| Ubuntu:24.04:LTS | suricata | no fix listed | UBUNTU-CVE-2026-94084 |
| Ubuntu:26.04:LTS | suricata | no fix listed | UBUNTU-CVE-2026-94084 |
| Ubuntu:26.10 | suricata | no fix listed | UBUNTU-CVE-2026-94084 |
Affected products (as reported)
Weakness: CWE-416 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:L