CVE-2026-45764: critical vulnerability in OISF suricata
Suricata http2: protocol-change type confusion can lead to denial of service
Published · Updated
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28Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 9.1epss 0.6%
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:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H
Affected products
OISF · suricataRelated CVEs — OISF suricata
In the same product, most dangerous first.
CVE-2026-45769HIGHikev2: unbounded client transform storage can lead to resource exhaustionEPSS 1.8%CVE-2024-38535HIGHSuricata http2: oom from duplicate headersEPSS 1.2%CVE-2024-23836HIGHcrafted traffic can cause denial of serviceEPSS 1.2%CVE-2024-55627MEDIUMSuricata segfault on StreamingBufferSlideToOffsetWithRegionsEPSS 1.0%CVE-2024-32663HIGHSuricata 's http2 parser contains an improper compressed header handling can lead to resource starvationEPSS 1.0%CVE-2024-23835HIGHSuricata's pgsql: memory exhaustion use on record parsingEPSS 0.9%