CVE-2026-123177

{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-123177", "assignerOrgId": "53f830b8-0a3f-465b-8143-3b8a9948e749", "state": "PUBLISHED", "assignerShortName": "redhat", "dateReserved": "2026-11-05T16:47:08.999Z", "datePublished": "2026-11-13T17:28:17.162Z", "dateUpdated": "2026-11-13T17:28:17.162Z"}, "containers": {"cna": {"title": "Dnf5: dnf5daemon-server: dnf5daemon-server: unauthenticated privileged cmdline package fetch/open via add_cmdline_packages", "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": 8.4, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "NONE", "privilegesRequired": "LOW", "scope": "CHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:H", "version": "3.1"}, "format": "CVSS"}], "descriptions": [{"lang": "en", "value": "A flaw was found in dnf5daemon-server. Unauthenticated D-Bus methods pass caller-controlled URL or .rpm path patterns into a root-privileged cmdline package loader that may store fetched content in a world-readable cache without size limits, or open local paths as root, allowing a local attacker to disclose privileged content and to deny service via disk exhaustion."}], "affected": [{"vendor": "Red Hat", "product": "Red Hat Hardened Images", "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "packageName": "dnf5", "defaultStatus": "affected", "cpes": ["cpe:/a:redhat:hummingbird:1"]}], "references": [{"url": "https://access.redhat.com/security/cve/CVE-2026-123177", "tags": ["vdb-entry", "x_refsource_REDHAT"]}, {"url": "https://bugzilla.redhat.com/show_bug.cgi?id=2567426", "name": "RHBZ#2567426", "tags": ["issue-tracking", "x_refsource_REDHAT"]}], "datePublic": "2026-11-13T12:00:00.000Z", "problemTypes": [{"descriptions": [{"cweId": "CWE-862", "description": "Missing Authorization", "lang": "en", "type": "CWE"}]}], "x_redhatCweChain": "CWE-862: Missing Authorization", "workarounds": [{"lang": "en", "value": "Until a fixed package is available, remove or disable dnf5daemon-server if GNOME Software / dnf5daemon-client is not required, or restrict system D-Bus access to org.rpm.dnf.v0 to trusted users. If non-root access to instance metadata is already blocked on a cloud host, also ensure the daemon cannot be used as a bypass, or disable the daemon. If exploitation cannot be ruled out, rotate exposed secrets (SSH host keys, service credentials, cloud role credentials where applicable) in addition to clearing /var/cache/dnf5daemon-server."}], "timeline": [{"lang": "en", "time": "2026-10-29T00:00:00.000Z", "value": "Reported to Red Hat."}, {"lang": "en", "time": "2026-11-13T12:00:00.000Z", "value": "Made public."}], "credits": [{"lang": "en", "value": "Red Hat would like to thank Adam Simuntis / adamm <a.simuntis@gmail.com> for reporting this issue."}], "providerMetadata": {"orgId": "53f830b8-0a3f-465b-8143-3b8a9948e749", "shortName": "redhat", "dateUpdated": "2026-11-13T17:28:17.162Z"}, "x_generator": {"engine": "cvelib 1.8.0"}}}}

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