CVEvulnerability

CVE-2026-94083

9.4 CRITICAL Published 2026-09-20 Modified 2026-09-28 Official page ↗

Status: Analyzed
Published: 2026-09-20
Last modified: 2026-09-28
Assigner: [email protected]
CVSS 3.1 ([email protected]): 9.4 CRITICAL — CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:L
Weaknesses: CWE-843

Description

Suricata before 8.0.7 has a DoH2 type confusion that can cause an invalid free, because cleanup code for the HTTP2 state is executed even though the actual state is HTTP1 (when there is a DoH2 request with an HTTP1 to HTTP2 upgrade). This requires app-layer.protocols.doh2 to be enabled, which is the default in 8.x versions.

Affected configurations

• oisf suricata (< 8.0.7)

Weakness · CWE (1)

CWE-843 Access of Resource Using Incompatible Type weakness

References

https://forum.suricata.io/t/suricata-8-0-7-released/6467 Release Notes
https://github.com/OISF/suricata/commit/e574009add9c208f319e1d9d15b3bb1229c88074 Patch
https://github.com/OISF/suricata/compare/suricata-8.0.6...suricata-8.0.7 Release Notes

CVE-2026-94083

Description

Affected configurations

Related

Weakness · CWE (1)

References