{"id":"CVE-2026-111439","revision":null,"records":[{"revision":"babb05ff9ce94e03ab4bf527530fe8b9","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-111439","aliases":[],"title":"pg_read_binary_file_blocks 缺少初始用户权限校验，普通用户可读取 relation 文件块","description":"在 openGauss-server的 src/common/backend/utils/adt/genfile.cpp 模块中，内置函数 pg_read_binary_file_blocks() 存在权限校验逻辑缺陷。该函数在入口处仅校验了起始块号（startBlockNum）和块数量（blockCount）的范围，随后直接调用底层文件读取例程 ReadBinaryFileBlocksFirstCall()。该底层例程仅执行了路径规范化检查以及针对 .. 路径遍历和数据目录边界的基本检查，缺失了对调用者数据库权限（如 SELECT 权限）的校验。此外，辅助函数 is_row_data_file() 也仅用于识别文件形态，未包含权限检查。因此，任何拥有普通数据库连接权限的用户，只要能够通过 pg_relation_filepath() 等函数获取到目标表的底层关系文件路径（例如压缩数据的 _compress 文件路径），即可无需具备该表的 SELECT 权限，直接读取表数据的二进制块。\n此漏洞影响此前3.0.0到6.0.0间的所有版本及补丁版，并在7.0.0-LTS版本修复。修复patch详见：https://gitcode.com/opengauss/openGauss-server/pull/9374。","state":0,"publishedAt":"2026-10-19T07:59:44.7+00:00","modifiedAt":"2026-10-19T17:25:07.334+00:00","affected":[{"ecosystem":"https://opengauss.org/zh/download/archive/?version=7.0.0%20(LTS)","name":"openGauss-server","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"vendor\": \"openGauss-server\",\n                    \"product\": \"openGauss-server\",\n                    \"platforms\": [\n                        \"openEuler Centos\"\n                    ],\n                    \"collectionURL\": \"https://opengauss.org/zh/download/archive/?version=7.0.0%20(LTS)\",\n                    \"versions\": [\n                        {\n                            \"status\": \"unaffected\",\n                            \"version\": \"7.0.0-LTS\"\n                        },\n                        {\n                            \"status\": \"affected\",\n                            \"version\": \"3.0.0-3.0.5\"\n                        },\n                        {\n                            \"status\": \"affected\",\n                            \"version\": \"3.1.0-3.1.1\"\n                        },\n                        {\n                            \"status\": \"affected\",\n                            \"version\": \"5.0.0-RC1\"\n                        },\n                        {\n                            \"status\": \"affected\",\n                            \"version\": \"5.0.0-5.0.3\"\n                        },\n                        {\n                            \"status\": \"affected\",\n                            \"version\": \"5.1.0\"\n                        },\n                        {\n                            \"status\": \"affected\",\n                            \"version\": \"6.0.0-RC1\"\n                        },\n                        {\n                            \"status\": \"affected\",\n                            \"version\": \"6.0.0-6.0.6\"\n                        },\n                        {\n                            \"status\": \"affected\",\n                            \"version\": \"7.0.0-RC1, 7.0.0-RC2, 7.0.0-RC3\"\n                        }\n                    ],\n                    \"defaultStatus\": \"unaffected\"\n                }"}],"metrics":[{"system":"CVSS 3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N","score":4.3,"severity":"MEDIUM"}],"references":["https://gitcode.com/opengauss/openGauss-server/pull/9374"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-111439","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-111439","identifiers":["CVE-2026-111439"]},"retained":false,"historicalAffected":[]}],"coverage":[{"source":"cisa-kev:global","scope":"Complete CISA KEV catalog; all vendors. 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