{"id":"CVE-2026-126199","aliases":["EUVD-2026-124570","GHSA-5gmh-9683-hhq9"],"status":"published","title":"pgEdge Postgres MCP Server write confirmation skipped for writes that begin with a reading keyword","description":"pgEdge Postgres MCP Server enables SQL queries against PostgreSQL databases through Model Context Protocol compatible clients. Prior to 1.1.0, the bundled CLI and web clients classified query_database statements only by their first keyword before deciding whether to display a write confirmation. SELECT INTO, data-modifying common table expressions beginning with WITH, and EXPLAIN ANALYZE of a write were treated as reads and could execute without confirmation on an allow_writes connection. Read-only connections remain protected by PostgreSQL transaction access mode, and EXPLAIN without ANALYZE and SELECT FOR UPDATE remain classified as reads. This issue is fixed in 1.1.0.","severity":{"version":"3.1","score":6.8,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:H/A:H","level":"medium","assessor":"cna","from":"cve"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-357"],"published":"2026-11-12T17:32:08Z","modified":"2026-11-13T02:47:25Z","products":[{"vendor":"pgedge","product":"pgedge-postgres-mcp"}],"references":[{"url":"https://github.com/pgEdge/pgedge-postgres-mcp/security/advisories/GHSA-5gmh-9683-hhq9","tags":["x_refsource_CONFIRM","advisory"]},{"url":"https://github.com/pgEdge/pgedge-postgres-mcp/pull/233","tags":["x_refsource_MISC","fix"]},{"url":"https://github.com/pgEdge/pgedge-postgres-mcp/commit/310c02809891cfaee6e4891cd7bb9aa1d459575c","tags":["x_refsource_MISC","fix"]},{"url":"https://github.com/pgEdge/pgedge-postgres-mcp/releases/tag/v1.1.0","tags":["x_refsource_MISC","web"]},{"url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/126xxx/CVE-2026-126199.json","tags":["advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-126199","tags":["advisory"]}],"sources":{"cve":[{"id":"CVE-2026-126199","title":"pgEdge Postgres MCP Server write confirmation skipped for writes that begin with a reading keyword","description":"pgEdge Postgres MCP Server enables SQL queries against PostgreSQL databases through Model Context Protocol compatible clients. Prior to 1.1.0, the bundled CLI and web clients classified query_database statements only by their first keyword before deciding whether to display a write confirmation. SELECT INTO, data-modifying common table expressions beginning with WITH, and EXPLAIN ANALYZE of a write were treated as reads and could execute without confirmation on an allow_writes connection. Read-only connections remain protected by PostgreSQL transaction access mode, and EXPLAIN without ANALYZE and SELECT FOR UPDATE remain classified as reads. This issue is fixed in 1.1.0.","status":"published","published":"2026-11-12T17:32:08.972Z","modified":"2026-11-12T17:32:08.972Z","cvss":[{"version":"3.1","score":6.8,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:H/A:H","level":"medium","assessor":"cna"}],"cwes":["CWE-357"],"updated_at":"2026-11-12T18:46:15.330302Z"}],"euvd":[{"id":"EUVD-2026-124570","description":"pgEdge Postgres MCP Server enables SQL queries against PostgreSQL databases through Model Context Protocol compatible clients. Prior to 1.1.0, the bundled CLI and web clients classified query_database statements only by their first keyword before deciding whether to display a write confirmation. SELECT INTO, data-modifying common table expressions beginning with WITH, and EXPLAIN ANALYZE of a write were treated as reads and could execute without confirmation on an allow_writes connection. Read-only connections remain protected by PostgreSQL transaction access mode, and EXPLAIN without ANALYZE and SELECT FOR UPDATE remain classified as reads. This issue is fixed in 1.1.0.","status":"published","published":"2026-11-12T17:32:08Z","modified":"2026-11-12T17:32:08Z","cvss":[{"version":"3.1","score":6.8,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:H/A:H","level":"medium"}],"updated_at":"2026-11-12T18:34:26.138107Z"}],"nvd":[{"id":"CVE-2026-126199","description":"pgEdge Postgres MCP Server enables SQL queries against PostgreSQL databases through Model Context Protocol compatible clients. Prior to 1.1.0, the bundled CLI and web clients classified query_database statements only by their first keyword before deciding whether to display a write confirmation. SELECT INTO, data-modifying common table expressions beginning with WITH, and EXPLAIN ANALYZE of a write were treated as reads and could execute without confirmation on an allow_writes connection. Read-only connections remain protected by PostgreSQL transaction access mode, and EXPLAIN without ANALYZE and SELECT FOR UPDATE remain classified as reads. This issue is fixed in 1.1.0.","status":"published","published":"2026-11-12T18:17:25.123Z","modified":"2026-11-12T19:09:06.967Z","cvss":[{"version":"3.1","score":6.8,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:H/A:H","level":"medium","assessor":"secondary"}],"cwes":["CWE-357"],"updated_at":"2026-11-12T19:32:19.894551Z"}],"osv":[{"id":"CVE-2026-126199","title":"pgEdge Postgres MCP Server write confirmation skipped for writes that begin with a reading keyword","description":"pgEdge Postgres MCP Server enables SQL queries against PostgreSQL databases through Model Context Protocol compatible clients. Prior to 1.1.0, the bundled CLI and web clients classified query_database statements only by their first keyword before deciding whether to display a write confirmation. SELECT INTO, data-modifying common table expressions beginning with WITH, and EXPLAIN ANALYZE of a write were treated as reads and could execute without confirmation on an allow_writes connection. Read-only connections remain protected by PostgreSQL transaction access mode, and EXPLAIN without ANALYZE and SELECT FOR UPDATE remain classified as reads. This issue is fixed in 1.1.0.","status":"published","published":"2026-11-12T17:32:08.972Z","modified":"2026-11-13T02:47:25.517038942Z","cvss":[{"version":"3.1","score":6.8,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:H/A:H","level":"medium"}],"cwes":["CWE-357"],"updated_at":"2026-11-13T02:57:32.2543Z"}]}}