CVE-2026-63446

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Source

https://cve.org/CVERecord?id=CVE-2026-63446

Import Source

https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2026-63446.json

JSON Data

https://api.test.osv.dev/v1/vulns/CVE-2026-63446

Aliases

GHSA-gjwr-75gq-877m

Downstream

DEBIAN-CVE-2026-63446

Published

2026-09-18T20:22:15Z

Modified

2026-09-20T08:19:44Z

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 app-layer: passed flows can retain transactions, causing resource exhaustion

Details

Suricata is a network Intrusion Detection System, Intrusion Prevention System and Network Security Monitoring engine. From 8.0.0 until 8.0.6, AppLayerParserSetTransactionInspectId() in src/app-layer-parser.c uses an inverted guard and marks only already-inspected transactions as inspected. On flows passed by a pass rule or pass-the-flow exception policy, detection is skipped, so completed transactions remain unmarked, are never freed, and are repeatedly rescanned. The per-flow list can grow without bound with quadratic cleanup cost, causing CPU and memory exhaustion. This issue is fixed in version 8.0.6.

Database specific

{
    "cna_assigner":  "GitHub_M",
    "cwe_ids":  [
        "CWE-401",
        "CWE-407"
    ],
    "osv_generated_from":  "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/63xxx/CVE-2026-63446.json"
}

References

Affected packages

Git / github.com/oisf/suricata

Affected ranges

Type

GIT

Repo

https://github.com/oisf/suricata

Events

Introduced

9956286fb89f9cad9e9f95b99dc751f8666617b7

Fixed

006e21c1ccc38c1c815e7945d54b4638cc5f0de8

Fixed

60a83c62a1dfdfb589b2bad27fb7fc339fc964b7

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-2026-63446.json"

vanir_signatures

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vanir_signatures_modified

"2026-09-20T08:19:44Z"