EUVD-2026-75448Severity by source
AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
AV:N because attacker traffic traverses the network to reach the sensor; AC:H because Lua rules must be enabled and a vulnerable script loaded; availability-only impact as the flaw causes memory exhaustion.
Primary rating from Vendor (GitHub_M).
CVSS VectorVendor: GitHub_M
Lifecycle Timeline
2DescriptionCVE.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,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.
AnalysisAI
Suricata 8.0.0 through 8.0.4 fails to consistently enforce the configured Lua sandbox memory ceiling (security.lua.max-bytes), allowing certain Lua allocation patterns to grow unbounded and exhaust host memory. The root cause (CWE-770) is an incomplete enforcement path for new allocations in the sandbox, introduced in the 8.0.0 branch. …
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Vulnerability AssessmentAI
| Exploitation | Exploitation requires two non-default conditions to be simultaneously met: (1) Lua rules must be explicitly enabled via `security.lua.allow-rules: true` in the Suricata configuration - this feature is not active by default; and (2) at least one Lua script or rule exhibiting the specific allocation pattern that bypasses the limit check must be loaded and actively evaluating traffic. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The CVSS 3.1 vector (AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H) assigns a base score of 5.9, reflecting that the attack is network-reachable but carries high complexity due to non-default prerequisites. … 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 | Upgrade to Suricata 8.0.5, the vendor-released patch that corrects the inconsistent memory limit enforcement in the Lua sandbox. … Detailed patch versions, workarounds, and compensating controls in full report. |
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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
Open Information Security Foundation Suricata prior to version 4.1.3 is affected by: Denial of Service - TCP/HTTP detect
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 technique Denial Of Service
View allVendor StatusVendor
SUSE
Severity: Moderate| Product | Status |
|---|---|
| openSUSE Tumbleweed | Fixed |
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