---
title: "CVE-2026-45764: Suricata - Denial of Service"
description: "Suricata < 7.0.16 and < 8.0.5 contain a denial of service caused by type confusion during HTTP/2 protocol processing, letting attackers crash the system remotely, exploit requires crafted HTTP/2 traffic."
url: https://panop.io/threat-heartbeat/CVE-2026-45764/
---

# CVE-2026-45764 Suricata - Denial of Service

Suricata < 7.0.16 and < 8.0.5 contain a denial of service caused by type confusion during HTTP/2 protocol processing, letting attackers crash the system remotely, exploit requires crafted HTTP/2 traffic.

CVSS base score 9.1 /10

Critical

CISA KEV

Not listed

Public exploit

None known

Authentication

Not required

EPSS

0.63% chance of exploitation in 30 days

[View the NVD record ↗](https://nvd.nist.gov/vuln/detail/CVE-2026-45764)

## Details

Type

Denial of Service

Impact

Denial Of Service

CVSS vector

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

Published

10 September 2026

Updated

15 October 2026

Weakness

[CWE-843](https://cwe.mitre.org/data/definitions/843.html)

## Vendor fix

Upgrade to versions 7.0.16, 8.0.5 or later. Alternatively, disable HTTP/2 parsing if not required.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

## References

- [https://nvd.nist.gov/vuln/detail/CVE-2026-45764](https://nvd.nist.gov/vuln/detail/CVE-2026-45764)
- [https://forum.suricata.io/t/suricata-8-0-5-and-7-0-16-released/6315](https://forum.suricata.io/t/suricata-8-0-5-and-7-0-16-released/6315)
- [https://github.com/OISF/suricata/security/advisories/GHSA-5rvq-72r5-rqhr](https://github.com/OISF/suricata/security/advisories/GHSA-5rvq-72r5-rqhr)
- [https://redmine.openinfosecfoundation.org/issues/8492](https://redmine.openinfosecfoundation.org/issues/8492)

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## What this record can't tell you

- Whether you run the affected software, and where
- Whether an attacker can actually reach and exploit it
- The misconfigurations that never get a CVE number
- What it would cost the business, ranked into what to fix first

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