SEPTEMBER 14, 2026
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Case File

CVE-2026-45763

MEDIUM · CVSS 5.9 EPSS 0.47% Public Exploit

Source: NVD + CISA KEV + EPSS · Published 2026-09-10 · Last synced 2026-09-14

CyberRota Analysis

AI-Generated

Suricata versions 8.0.0 to 8.0.4 are vulnerable due to inconsistent enforcement of the Lua sandbox memory limit, which may allow certain allocation patterns to exceed the configured memory limit, potentially leading to resource exhaustion or denial of service. Users with Lua rule execution enabled should prioritize this vulnerability, especially if they are utilizing affected Lua scripts or rules. Upgrading to version 8.0.5 or disabling Lua rules is recommended to mitigate the risk.

Public Exploit Signal

A public exploit, PoC, GitHub repository or Metasploit reference was detected for this CVE.

GitHub PoC Links

Note: these links are listed for security research and verification purposes only.

CVE
CVE-2026-45763
Severity
MEDIUM
CVSS
5.9
EPSS
0.47%

Original NVD 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, when Lua rule execution is enabled, the Lua sandbox memory limit was not consistently enforced for new allocations. Certain Lua allocation patterns could exceed `security.lua.max-bytes` without triggering the intended memory limit, making the configured sandbox limit unreliable. This requires Lua rules to be enabled and an affected Lua script/rule to be loaded. Version 8.0.5 contains a fix. As a workaround, disable `security.lua.allow-rules` unless Lua rules are required.