CVE-2026-45763
published 2026-09-10CVE-2026-45763: Suricata is a network Intrusion Detection System, Intrusion Prevention System and Network Security Monitoring engine. Starting in version 8.0.0 and prior to…
PriorityP433medium5.9CVSS 3.1
AVNACHPRNUINSUCNINAH
EPSS
0.62%
49.3th percentile
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.
Affected
2 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| oisf | suricata | — | — |
| oisf | suricata | >= 8.0.0 < 8.0.5 | 8.0.5 |
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No advisories linked to this vulnerability.
No detection rules found.
No public exploits indexed.
Bugzilla
CVE-2026-45763 suricata: Suricata: Denial of Service via un-enforced Lua sandbox memory limits [epel-all]
bugzilla·2026-09-11·CVSS 5.9
CVE-2026-45763 [MEDIUM] CVE-2026-45763 suricata: Suricata: Denial of Service via un-enforced Lua sandbox memory limits [epel-all]
CVE-2026-45763 suricata: Suricata: Denial of Service via un-enforced Lua sandbox memory limits [epel-all]
Disclaimer: Community trackers are created by Red Hat Product Security team on a best effort basis. Package maintainers are required to ascertain if the flaw indeed affects their package, before starting the update process.
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
Bugzilla
CVE-2026-45763 suricata: Suricata: Denial of Service via un-enforced Lua sandbox memory limits [fedora-all]
bugzilla·2026-09-11·CVSS 5.9
CVE-2026-45763 [MEDIUM] CVE-2026-45763 suricata: Suricata: Denial of Service via un-enforced Lua sandbox memory limits [fedora-all]
CVE-2026-45763 suricata: Suricata: Denial of Service via un-enforced Lua sandbox memory limits [fedora-all]
Disclaimer: Community trackers are created by Red Hat Product Security team on a best effort basis. Package maintainers are required to ascertain if the flaw indeed affects their package, before starting the update process.
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 L
Bugzilla
CVE-2026-45763 suricata: Suricata: Denial of Service via un-enforced Lua sandbox memory limits
bugzilla·2026-09-10·CVSS 5.9
CVE-2026-45763 [MEDIUM] CVE-2026-45763 suricata: Suricata: Denial of Service via un-enforced Lua sandbox memory limits
CVE-2026-45763 suricata: Suricata: Denial of Service via un-enforced Lua sandbox memory limits
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.
2026-09-10
Published