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{"acknowledgement": "Red Hat would like to thank AISLE Research for reporting this issue.", "bugzilla": {"description": "libmodulemd: libmodulemd: unbounded recursion when parsing nested xmd YAML", "id": "2479002", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2479002"}, "csaw": false, "cvss3": {"cvss3_base_score": "6.2", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H", "status": "draft"}, "cwe": "CWE-674", "details": ["A flaw was found in libmodulemd. When parsing module metadata, the xmd field is converted into nested GVariant values through recursive YAML mapping and sequence helpers without a recursion-depth or node-count limit. An attacker who can supply crafted modulemd YAML with deeply nested xmd content can cause stack exhaustion or excessive resource consumption, resulting in a denial of service."], "mitigation": {"lang": "en:us", "value": "Until a fix is available, avoid parsing untrusted modulemd documents that may contain attacker-controlled xmd data. If such input must be accepted, reject unusually deep or large xmd structures before handing them to libmodulemd, and isolate parsing in a process with strict stack, CPU, and memory limits."}, "name": "CVE-2026-92822", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:10", "fix_state": "Affected", "package_name": "libmodulemd", "product_name": "Red Hat Enterprise Linux 10"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Fix deferred", "package_name": "libmodulemd", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Affected", "package_name": "libmodulemd", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/a:redhat:hummingbird:1", "fix_state": "Affected", "package_name": "libmodulemd", "product_name": "Red Hat Hardened Images"}, {"cpe": "cpe:/a:redhat:openshift:4", "fix_state": "Fix deferred", "package_name": "openshift/ose-rhel-coreos-8", "product_name": "Red Hat OpenShift Container Platform 4"}, {"cpe": "cpe:/a:redhat:openshift:4", "fix_state": "Fix deferred", "package_name": "openshift/ose-rhel-coreos-9", "product_name": "Red Hat OpenShift Container Platform 4"}], "public_date": "2026-10-21T03:03:49Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-92822\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-92822"], "statement": "This Moderate flaw is an availability-only denial of service in libmodulemd. Exploitation requires a consumer to parse attacker-controlled modulemd YAML containing a deeply nested xmd structure. Environments that only ingest trusted module metadata are not practically exposed. Confidentiality and integrity impact were not established.", "threat_severity": "Moderate"}

{}