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        "cveId": "CVE-2026-86320",
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        "state": "PUBLISHED",
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        "dateReserved": "2026-09-07T05:35:25.012Z",
        "datePublished": "2026-09-17T07:27:33.167Z",
        "dateUpdated": "2026-10-12T20:09:09.748Z"
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    "containers": {
        "cna": {
            "title": "Flatpak-builder: host code execution via `git am` hook execution in patch source extraction (`use-git-am`)",
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                        "content": {
                            "value": "Important",
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                    "cvssV3_1": {
                        "attackComplexity": "LOW",
                        "attackVector": "LOCAL",
                        "availabilityImpact": "HIGH",
                        "baseScore": 7.8,
                        "baseSeverity": "HIGH",
                        "confidentialityImpact": "HIGH",
                        "integrityImpact": "HIGH",
                        "privilegesRequired": "NONE",
                        "scope": "UNCHANGED",
                        "userInteraction": "REQUIRED",
                        "vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H",
                        "version": "3.1"
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            ],
            "descriptions": [
                {
                    "lang": "en",
                    "value": "A flaw was found in flatpak-builder where Git hooks are not disabled when applying patch sources with use-git-am: true. An attacker who can provide a malicious source containing a Git post-applypatch hook can cause the hook to execute on the host during the build process, resulting in arbitrary code execution with the privileges of the user running flatpak-builder."
                }
            ],
            "affected": [
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                    "vendor": "Red Hat",
                    "product": "Red Hat Enterprise Linux 10",
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                    "packageName": "flatpak-builder",
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                    "product": "Red Hat Enterprise Linux 8",
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                    "packageName": "flatpak-builder",
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                            "status": "unaffected"
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                    "vendor": "Red Hat",
                    "product": "Red Hat Enterprise Linux 9",
                    "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
                    "packageName": "flatpak-builder",
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            ],
            "references": [
                {
                    "url": "https://access.redhat.com/errata/RHSA-2026:80495",
                    "name": "RHSA-2026:80495",
                    "tags": [
                        "vendor-advisory",
                        "x_refsource_REDHAT"
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                    "url": "https://access.redhat.com/errata/RHSA-2026:80496",
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                    "url": "https://access.redhat.com/errata/RHSA-2026:80973",
                    "name": "RHSA-2026:80973",
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                    "name": "RHBZ#2471023",
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                        "issue-tracking",
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                },
                {
                    "url": "https://github.com/flatpak/flatpak-builder/security/advisories/GHSA-j5p8-jgjc-f3xv"
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            ],
            "datePublic": "2026-08-13T14:32:20.714Z",
            "problemTypes": [
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                            "cweId": "CWE-94",
                            "description": "Improper Control of Generation of Code ('Code Injection')",
                            "lang": "en",
                            "type": "CWE"
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                    ]
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            ],
            "x_redhatCweChain": "CWE-94: Improper Control of Generation of Code ('Code Injection')",
            "workarounds": [
                {
                    "lang": "en",
                    "value": "Avoid using use-git-am: true when processing untrusted manifests or source material. Where untrusted builds are required, perform builds inside disposable virtual machines or other isolated environments."
                }
            ],
            "timeline": [
                {
                    "lang": "en",
                    "time": "2026-05-11T20:27:44.000Z",
                    "value": "Reported to Red Hat."
                },
                {
                    "lang": "en",
                    "time": "2026-08-13T14:32:20.714Z",
                    "value": "Made public."
                }
            ],
            "credits": [
                {
                    "lang": "en",
                    "value": "Red Hat would like to thank AISLE Research for reporting this issue."
                }
            ],
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                                "timestamp": "2026-09-17T15:42:59.014535Z",
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