CVE-2026-63451

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Source
https://cve.org/CVERecord?id=CVE-2026-63451
Import Source
https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2026-63451.json
JSON Data
https://api.test.osv.dev/v1/vulns/CVE-2026-63451
Aliases
  • GHSA-6qwq-j83r-qp34
Downstream
Published
2026-09-18T20:15:52Z
Modified
2026-09-20T08:19:45Z
Severity
  • 3.3 (Low) CVSS_V3 - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L CVSS Calculator
Summary
Suricata detect: frame rules without content and with transform can cause heap buffer overflow during rule load
Details

Suricata is a network Intrusion Detection System, Intrusion Prevention System and Network Security Monitoring engine. From 8.0.0 until 8.0.6, a locally supplied detection rule that combines frame inspection without content and a transformed match without content can make src/detect-engine-prefilter.c select multiple non-prefilter frame engines while preparing signatures for non-prefilter inspection. Loading the crafted rule, including in test mode, can trigger a heap buffer overflow and crash Suricata; network traffic alone cannot reach the flaw. This issue is fixed in version 8.0.6.

Database specific 
{
    "cna_assigner":  "GitHub_M",
    "cwe_ids":  [
        "CWE-122"
    ],
    "osv_generated_from":  "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/63xxx/CVE-2026-63451.json"
}
References

Affected packages

Git / github.com/oisf/suricata

Affected ranges

Type
GIT
Repo
https://github.com/oisf/suricata
Events
Introduced
9956286fb89f9cad9e9f95b99dc751f8666617b7
Fixed
5449ae170bfce213907d9bab87143a59774ed48f
Fixed
d62acf5d75a61b76b16815e773408852f41b1975
Fixed
4c28cc1b4ac64f48efdca6ce3e09748227a04a7e
Database specific
Show details 
{
    "extracted_events":  [
        {
            "introduced":  "8.0.0"
        },
        {
            "fixed":  "8.0.6"
        }
    ],
    "source":  [
        "AFFECTED_FIELD",
        "REFERENCES"
    ]
}

Affected versions

suricata-8.*
suricata-8.0.0
suricata-8.0.1
suricata-8.0.2
suricata-8.0.3
suricata-8.0.4
suricata-8.0.5

Database specific

source 
"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2026-63451.json"
vanir_signatures 
[
    {
        "deprecated":  false,
        "digest":  {
            "line_hashes":  [
                "93289737976443247115691829145665753149",
                "35995710092195093778646866375763661066",
                "270335985547184371727681190062802908481",
                "111607904644539555151298765751505943890"
            ],
            "threshold":  0.9
        },
        "id":  "CVE-2026-63451-37584fee",
        "signature_type":  "Line",
        "signature_version":  "v1",
        "source":  "https://github.com/oisf/suricata/commit/d62acf5d75a61b76b16815e773408852f41b1975",
        "target":  {
            "file":  "src/detect-engine-prefilter.c"
        }
    },
    {
        "deprecated":  false,
        "digest":  {
            "function_hash":  "219190488257231766848358096501503531074",
            "length":  9391
        },
        "id":  "CVE-2026-63451-799b1285",
        "signature_type":  "Function",
        "signature_version":  "v1",
        "source":  "https://github.com/oisf/suricata/commit/d62acf5d75a61b76b16815e773408852f41b1975",
        "target":  {
            "file":  "src/detect-engine-prefilter.c",
            "function":  "SetupNonPrefilter"
        }
    },
    {
        "deprecated":  false,
        "digest":  {
            "line_hashes":  [
                "93289737976443247115691829145665753149",
                "35995710092195093778646866375763661066",
                "270335985547184371727681190062802908481",
                "111607904644539555151298765751505943890"
            ],
            "threshold":  0.9
        },
        "id":  "CVE-2026-63451-c4fa8bfe",
        "signature_type":  "Line",
        "signature_version":  "v1",
        "source":  "https://github.com/oisf/suricata/commit/5449ae170bfce213907d9bab87143a59774ed48f",
        "target":  {
            "file":  "src/detect-engine-prefilter.c"
        }
    },
    {
        "deprecated":  false,
        "digest":  {
            "function_hash":  "222073690318783035509412228828003397108",
            "length":  9267
        },
        "id":  "CVE-2026-63451-ee1e5bfe",
        "signature_type":  "Function",
        "signature_version":  "v1",
        "source":  "https://github.com/oisf/suricata/commit/5449ae170bfce213907d9bab87143a59774ed48f",
        "target":  {
            "file":  "src/detect-engine-prefilter.c",
            "function":  "SetupNonPrefilter"
        }
    }
]
vanir_signatures_modified 
"2026-09-20T08:19:45Z"