CVE-2026-45764Suricata http2: protocol-change type confusion can lead to denial of service
Updated under an hour ago ()
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It affects OISF suricata. Add what you run to find out whether that includes you.
No exploitation reported and no EPSS estimate yet.
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Suricata is a network Intrusion Detection System, Intrusion Prevention System and Network Security Monitoring engine. Prior to versions 7.0.16 and 8.0.5, a protocol change while processing HTTP/2 traffic could lead to type confusion in Suricata. Crafted traffic may cause Suricata to crash, resulting in denial of service. Versions 7.0.16 and 8.0.5 contain a fix. As a workaround, disable HTTP/2 parsing if it is not required.
- CVSS
- 9.1 CRITICAL (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H
- Weakness (CWE)
- CWE-843
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- GitHub_M
- NVD analysis
- Analyzed
- Record last updated
- Sep 11, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
OISF suricata oisf:suricata (from the name) | from 8.0.0, < 8.0.5; before 7.0.16 | CNA record |
oisf suricata oisf:suricata | from 7.0.0 before 7.0.16; from 8.0.0 before 8.0.5 | NVD |
References
- https://github.com/OISF/suricata/security/advisories/GHSA-5rvq-72r5-rqhrx-refsource-confirm, third-party-advisory
- https://forum.suricata.io/t/suricata-8-0-5-and-7-0-16-released/6315x-refsource-misc, release-notes, vendor-advisory
- https://redmine.openinfosecfoundation.org/issues/8492x-refsource-misc, permissions-required
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.