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        "state": "PUBLISHED",
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        "dateReserved": "2026-09-16T20:31:04.648Z",
        "datePublished": "2026-10-21T03:18:37.968Z",
        "dateUpdated": "2026-10-30T06:04:28.739Z"
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            "title": "Libmodulemd: libmodulemd: missing decompressed-size limit when parsing compressed yaml",
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                        "attackComplexity": "LOW",
                        "attackVector": "LOCAL",
                        "availabilityImpact": "HIGH",
                        "baseScore": 6.2,
                        "baseSeverity": "MEDIUM",
                        "confidentialityImpact": "NONE",
                        "integrityImpact": "NONE",
                        "privilegesRequired": "NONE",
                        "scope": "UNCHANGED",
                        "userInteraction": "NONE",
                        "vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
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            "descriptions": [
                {
                    "lang": "en",
                    "value": "A flaw was found in libmodulemd. In builds with rpmio support enabled, compressed modulemd YAML is decompressed through a custom read handler that does not enforce a cumulative decompressed-size limit before parsing. An attacker who can supply a highly compressible compressed YAML file can cause excessive CPU and memory consumption, resulting in a denial of service."
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                    "packageName": "openshift/ose-rhel-coreos-8",
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                        "x_refsource_REDHAT"
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            "datePublic": "2026-10-21T03:02:56.516Z",
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                            "cweId": "CWE-409",
                            "description": "Improper Handling of Highly Compressed Data (Data Amplification)",
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                            "type": "CWE"
                        }
                    ]
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            ],
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                {
                    "lang": "en",
                    "value": "Until a fix is available, avoid parsing attacker-controlled compressed module metadata in rpmio-enabled builds. Where compressed input is required, decompress outside the process under strict size quotas, or reject files whose decompressed size exceeds a conservative limit before passing data to libmodulemd. Building without rpmio support removes the affected path."
                }
            ],
            "timeline": [
                {
                    "lang": "en",
                    "time": "2026-05-18T03:32:25.000Z",
                    "value": "Reported to Red Hat."
                },
                {
                    "lang": "en",
                    "time": "2026-10-21T03:02:56.516Z",
                    "value": "Made public."
                }
            ],
            "credits": [
                {
                    "lang": "en",
                    "value": "Red Hat would like to thank AISLE Research for reporting this issue."
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            ],
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