EUVD-2026-75127Severity by source
CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:P/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Attacker plants content remotely (AV:N/PR:N) but payload fires only when a legitimate user interacts (UI:R); MCP validation flaw yields command execution on the separate PostgreSQL host (S:C, C/I/A:H).
Primary rating from Vendor (ff89ba41-3aa1-4d27-914a-91399e9639e5).
CVSS VectorVendor: ff89ba41-3aa1-4d27-914a-91399e9639e5
Lifecycle Timeline
5DescriptionCVE.org
An OS command injection weakness in the read-only enforcement of the SQL validation component in Amazon awslabs postgres-mcp-server before 1.1.7 might allow an unauthenticated actor to execute operating system commands on the host of a self-managed PostgreSQL server by placing a crafted COPY ... TO PROGRAM statement into content that is processed when an authenticated user interacts with the MCP server in its default read-only mode.
To remediate this issue, users should upgrade to version 1.1.7 or later.
Articles & Coverage 1
AnalysisAI
Remote code execution in Amazon awslabs postgres-mcp-server before 1.1.7 lets remote actors run arbitrary OS commands on the host of a self-managed PostgreSQL server, even in the server's default read-only mode. The read-only enforcement in the SQL validation component fails to reject PostgreSQL's COPY ... …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Requires the target to run awslabs postgres-mcp-server before 1.1.7 connected to a self-managed PostgreSQL server whose database account can invoke COPY ... … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The supplied CVSS 4.0 vector (AV:N/AC:L/AT:P/PR:N/UI:P, base 9.0) with VC/VI/VA:H and subsequent-system SC/SI/SA:H reflects full host compromise, but two metrics materially temper real-world risk: UI:P (a legitimate authenticated user must interact with the MCP server on the poisoned content) and AT:P (a specific attack requirement/precondition must hold). … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | Full exploit scenario with step-by-step reproduction available after sign-in. |
| Remediation | Vendor-released patch: 1.1.7. … Detailed patch versions, workarounds, and compensating controls in full report. |
Recommended ActionAI
Within 24 hours, identify and inventory all postgres-mcp-server instances, document their versions, and assess exposure scope. …
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External POC / Exploit Code
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