EUVD-2026-75797Severity by source
AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
AC:H reflects the non-default Lua configuration requirement; PR:L captures operator or feed-admin access needed to load rules; A:H added because crashes are explicitly described.
Primary rating from Vendor (GitHub_M).
CVSS VectorVendor: GitHub_M
Lifecycle Timeline
4DescriptionCVE.org
Suricata is a network Intrusion Detection System, Intrusion Prevention System and Network Security Monitoring engine. Starting in version 8.0.0 and prior to version 8.0.5, a Lua rule that registers too many flow variables can corrupt Lua detection state and may bypass Suricata's restricted Lua sandbox. This requires an affected Lua script/rule to be loaded. Excessive flow variables being registered may also cause Suricata to crash. Version 8.0.5 contains a fix. As a workaround, disable security.lua.allow-rules unless Lua rules are required.
AnalysisAI
Lua sandbox bypass in Suricata 8.0.0-8.0.4 allows a crafted Lua detection rule that registers an excessive number of flow variables to corrupt Suricata's internal Lua detection state and escape the restricted Lua execution sandbox. Deployments with security.lua.allow-rules enabled face both integrity loss - attacker-controlled Lua rules can subvert detection logic - and availability risk, as the same corruption pathway can crash the Suricata process entirely. …
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Attack ChainAIDerived
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Vulnerability AssessmentAI
| Exploitation | Exploitation requires two specific non-default conditions to both be true simultaneously. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The provided CVSS 7.5 score (AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N) warrants scrutiny against actual exploitation conditions. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | Full exploit scenario with step-by-step reproduction available after sign-in. |
| Remediation | Vendor-released patch: 8.0.5, announced at https://forum.suricata.io/t/suricata-8-0-5-and-7-0-16-released/6315. … Detailed patch versions, workarounds, and compensating controls in full report. |
Recommended ActionAI
Within 24 hours, audit all systems running Suricata 8.0.0-8.0.4 and determine if Lua rule functionality is enabled; if not operationally critical, disable security.lua.allow-rules immediately. …
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OISF suricata-update version 1.0.0a1 contains an Insecure Deserialization vulnerability in the insecure yaml.load-Functi
Suricata is a network IDS, IPS and NSM engine developed by the OISF (Open Information Security Foundation) and the Suric
An issue was discovered in Suricata before 6.0.4. Rated high severity (CVSS 7.5), this vulnerability is remotely exploit
An issue was discovered in Suricata 4.1.3. Rated high severity (CVSS 7.5), this vulnerability is remotely exploitable, n
An issue was discovered in Suricata 4.1.3. Rated high severity (CVSS 7.5), this vulnerability is remotely exploitable, n
An issue was discovered in Suricata 4.1.3. Rated high severity (CVSS 7.5), this vulnerability is remotely exploitable, n
An issue was discovered in Suricata 4.1.3. Rated high severity (CVSS 7.5), this vulnerability is remotely exploitable, n
An issue was discovered in Suricata 4.1.3. Rated high severity (CVSS 7.5), this vulnerability is remotely exploitable, n
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Suricata before 4.0.5 stops TCP stream inspection upon a TCP RST from a server. Rated high severity (CVSS 7.5), this vul
The MemcmpLowercase function in Suricata before 2.0.6 improperly excludes the first byte from comparisons, which might a
In Suricata before 6.0.13, an adversary who controls an external source of Lua rules may be able to execute Lua code. Ra
Same weakness CWE-693 – Protection Mechanism Failure
View allSame technique Denial Of Service
View allVendor StatusVendor
SUSE
| Product | Status |
|---|---|
| openSUSE Tumbleweed | Fixed |
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External POC / Exploit Code
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