CVE-2026-63452

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Source

https://cve.org/CVERecord?id=CVE-2026-63452

Import Source

https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-63452.json

JSON Data

https://api.osv.dev/v1/vulns/CVE-2026-63452

Aliases

GHSA-j9cx-w9xm-5x84

Downstream

DEBIAN-CVE-2026-63452

Published

2026-09-18T20:16:51Z

Modified

2026-09-20T14:13:49Z

Severity

7.5 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H CVSS Calculator

Summary

Suricata http1: repeated brotli compression bombs can cause excessive CPU consumption

Details

Suricata is a network Intrusion Detection System, Intrusion Prevention System and Network Security Monitoring engine. From 8.0.0 until 8.0.6, the HTTP/1 parser limits decompression work per transaction but does not limit how many small brotli compression bombs a single flow can submit. With response-body-decompress-layer-limit enabled, repeated compressed responses make the decompression paths in rust/htp perform expensive work for every transaction, degrading packet processing and potentially causing loss of monitoring visibility or denial of service. This issue is fixed in version 8.0.6.

Database specific

{
    "cna_assigner": "GitHub_M",
    "cwe_ids": [
        "CWE-400",
        "CWE-409"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/63xxx/CVE-2026-63452.json"
}

References

Affected packages

Git / github.com/oisf/suricata

Affected ranges

Type

GIT

Repo

https://github.com/oisf/suricata

Events

Introduced

9956286fb89f9cad9e9f95b99dc751f8666617b7

Fixed

392b6aee2971a4b5e573850f5d832112509bcb5f

Fixed

e369bf29ee5bbd0cdf6a98dc4a3357ba43c86a88

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/cve-osv-conversion/osv-output/CVE-2026-63452.json"

vanir_signatures

[
    {
        "deprecated": false,
        "digest": {
            "function_hash": "38179159653232128359982108201015064381",
            "length": 12561
        },
        "id": "CVE-2026-63452-2bf7e418",
        "signature_type": "Function",
        "signature_version": "v1",
        "source": "https://github.com/oisf/suricata/commit/e369bf29ee5bbd0cdf6a98dc4a3357ba43c86a88",
        "target": {
            "file": "src/app-layer-htp.c",
            "function": "HTPConfigParseParameters"
        }
    },
    {
        "deprecated": false,
        "digest": {
            "line_hashes": [
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            ],
            "threshold": 0.9
        },
        "id": "CVE-2026-63452-5932c684",
        "signature_type": "Line",
        "signature_version": "v1",
        "source": "https://github.com/oisf/suricata/commit/392b6aee2971a4b5e573850f5d832112509bcb5f",
        "target": {
            "file": "src/app-layer-htp.c"
        }
    },
    {
        "deprecated": false,
        "digest": {
            "function_hash": "38179159653232128359982108201015064381",
            "length": 12561
        },
        "id": "CVE-2026-63452-ac11dd09",
        "signature_type": "Function",
        "signature_version": "v1",
        "source": "https://github.com/oisf/suricata/commit/392b6aee2971a4b5e573850f5d832112509bcb5f",
        "target": {
            "file": "src/app-layer-htp.c",
            "function": "HTPConfigParseParameters"
        }
    },
    {
        "deprecated": false,
        "digest": {
            "line_hashes": [
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                "100160158036436882087892290116696859843",
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            ],
            "threshold": 0.9
        },
        "id": "CVE-2026-63452-ae4c43f8",
        "signature_type": "Line",
        "signature_version": "v1",
        "source": "https://github.com/oisf/suricata/commit/e369bf29ee5bbd0cdf6a98dc4a3357ba43c86a88",
        "target": {
            "file": "src/app-layer-htp.c"
        }
    }
]

vanir_signatures_modified

"2026-09-20T14:13:49Z"