CVE-2026-45770
High
Description
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.
SeverityHigh
CVSS7.5
Exploit probability—
ProductOisf Suricata
PublishedSep 10, 2026
First seenSep 10, 2026
Weakness typeCWE-693CWE-693CWE-787Out-of-bounds write
How to fix
Update
- oisf suricata8.0.5 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| oisf suricata | 8.0.0 ≤ v < 8.0.5 | 8.0.5 |
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