{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-86320", "assignerOrgId": "53f830b8-0a3f-465b-8143-3b8a9948e749", "state": "PUBLISHED", "assignerShortName": "redhat", "dateReserved": "2026-09-07T05:35:25.012Z", "datePublished": "2026-09-17T07:27:33.167Z", "dateUpdated": "2026-09-17T08:26:31.448Z"}, "containers": {"cna": {"title": "Flatpak-builder: host code execution via `git am` hook execution in patch source extraction (`use-git-am`)", "metrics": [{"other": {"content": {"value": "Important", "namespace": "https://access.redhat.com/security/updates/classification/"}, "type": "Red Hat severity rating"}}, {"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"}, "format": "CVSS"}], "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": [{"vendor": "Red Hat", "product": "Red Hat Enterprise Linux 10", "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "packageName": "flatpak-builder", "defaultStatus": "affected", "cpes": ["cpe:/o:redhat:enterprise_linux:10"]}, {"vendor": "Red Hat", "product": "Red Hat Enterprise Linux 8", "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "packageName": "flatpak-builder", "defaultStatus": "affected", "cpes": ["cpe:/o:redhat:enterprise_linux:8"]}, {"vendor": "Red Hat", "product": "Red Hat Enterprise Linux 9", "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "packageName": "flatpak-builder", "defaultStatus": "affected", "cpes": ["cpe:/o:redhat:enterprise_linux:9"]}], "references": [{"url": "https://access.redhat.com/security/cve/CVE-2026-86320", "tags": ["vdb-entry", "x_refsource_REDHAT"]}, {"url": "https://bugzilla.redhat.com/show_bug.cgi?id=2471023", "name": "RHBZ#2471023", "tags": ["issue-tracking", "x_refsource_REDHAT"]}, {"url": "https://github.com/flatpak/flatpak-builder/security/advisories/GHSA-j5p8-jgjc-f3xv"}], "datePublic": "2026-08-13T14:32:20.714Z", "problemTypes": [{"descriptions": [{"cweId": "CWE-94", "description": "Improper Control of Generation of Code ('Code Injection')", "lang": "en", "type": "CWE"}]}], "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."}], "providerMetadata": {"orgId": "53f830b8-0a3f-465b-8143-3b8a9948e749", "shortName": "redhat", "dateUpdated": "2026-09-17T08:26:31.448Z"}, "x_generator": {"engine": "cvelib 1.8.0"}}}}

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