pgEdge Postgres MCP Server custom tools performed writes without user confirmation

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2026-126198
StatePUBLISHED
AssignerGitHub_M
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-11-12 18:17:24 UTC
Updated2026-11-12 19:09:06 UTC
DescriptionpgEdge Postgres MCP Server enables SQL queries against PostgreSQL databases through Model Context Protocol compatible clients. Prior to 1.1.0, the bundled clients, including the CLI and web client, decided whether to request write confirmation by checking only for the query_database tool name instead of server-published write annotations. Custom pl-do, pl-func, and writing sql tools therefore ran without confirmation on allow_writes connections, including when a model followed instructions in retrieved content. The affected control is a bundled-client warning rather than a server authorization boundary, and other MCP clients do not inherit that prompt. This issue is fixed in 1.1.0.

Risk And Classification

Primary CVSS: v3.1 3.1 LOW from [email protected]

CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:L/A:N

Problem Types: CWE-357 | CWE-357 CWE-357: Insufficient UI Warning of Dangerous Operations

VersionSourceTypeScoreSeverityVector
3.1[email protected]Secondary3.1LOWCVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:L/A:N
3.1CNADECLARED3.1LOWCVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:L/A:N

CVSS v3.1 Breakdown

Attack Vector
Network
Attack Complexity
High
Privileges Required
None
User Interaction
Required
Scope
Unchanged
Confidentiality
None
Integrity
Low
Availability
None

CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:L/A:N

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA PgEdge Pgedge-postgres-mcp affected < 1.1.0 Not specified

References

ReferenceSourceLinkTags
github.com/pgEdge/pgedge-postgres-mcp/releases/tag/v1.1.0 [email protected] github.com
github.com/pgEdge/pgedge-postgres-mcp/pull/198 [email protected] github.com
github.com/pgEdge/pgedge-postgres-mcp/commit/c86d5cbe6d65c6debd0d0e909ce... [email protected] github.com
github.com/pgEdge/pgedge-postgres-mcp/security/advisories/GHSA-v44x-hxg7... [email protected] github.com
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