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  4. CVE 2026 125320 pgedge postgres mcp server did not validate the
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Back to active CVEs
Medium · CVSS 5.3CVE-2026-125320

pgEdge Postgres MCP Server did not validate the Origin header, allowing DNS rebindingCVE-2026-125320

Answer in brief

CVE-2026-125320 records a Medium severity (CVSS 5.3) vulnerability in pgEdge Postgres MCP Server did not validate the Origin header, allowing DNS rebinding. The current sources do not mark it as known exploited. The current feed maps pgEdge/pgedge-postgres-mcp (generic). Check affected ranges and fixed versions before updating.

Analysis pending evidence review

HOL Guard separates source facts from reviewed analysis. See the methodology.

Published Nov 10, 2026Updated Nov 10, 2026Source checked Nov 10, 2026First seen by HOL Nov 10, 2026Material review Nov 10, 2026
Upstream Advisory

Key facts

Risk
Medium · CVSS 5.3
Exploitation
Not marked as known exploited
Affected software
1 mapped package or product
Fix availability
Available

Why this deserves its current priority

CVSS is 5.3. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.

Analysis status

Analysis pending evidence review

Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.

Affected scope and exposure questions

The current feed maps pgEdge/pgedge-postgres-mcp (generic). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
PackageAffected rangeFixed version
pgEdge/pgedge-postgres-mcpgeneric<1.1.01.1.0

Recommended response

  1. 1Check inventory. Check lockfiles and deployed manifests for pgEdge/pgedge-postgres-mcp.
  2. 2Review the reported fix. Update pgEdge/pgedge-postgres-mcp to 1.1.0 if you use the affected versions. Test the change in a non-production environment first.

Evidence timeline and material changes

  1. Published upstream

    Nov 10, 2026

    Evidence: source:cvelist:source_dates:source-dates:record

  2. Source modified

    Nov 10, 2026

    Evidence: source:cvelist:source_dates:source-dates:record

  3. First seen by HOL

    Nov 10, 2026

Sources and claim methodology

  • GitHub security advisorygithub.com
  • GitHub security advisorygithub.com
  • GitHub security advisorygithub.com
  • GitHub security advisorygithub.com
  • GitHub security advisorygithub.com
Upstream source description

pgEdge Postgres MCP Server enables SQL queries against PostgreSQL databases through Model Context Protocol compatible clients. Prior to 1.1.0, the HTTP transport did not validate the Origin header on incoming requests. A user who visited an attacker-controlled page could be targeted through DNS rebinding, allowing the page to reach a locally running server and read schemas and query results from configured databases. The issue affected deployments with the HTTP transport enabled on a machine that also ran a browser, while the default stdio transport was not reachable through this path. This issue is fixed in version 1.1.0.

Quoted source text, attributed separately from HOL analysis.

Related CVEs

  • pgEdge Postgres MCP Server login rate limiting can be evaded by a caller-supplied headerSame pgedge/pgedge-postgres-mcp package
  • pgEdge Postgres MCP Server SQL injection in the count_rows where parameterSame pgedge/pgedge-postgres-mcp package

Record context

Vulnerability class
Tool Poisoning
EPSS
Not reported
CWE IDs
CWE-346
Source
CVE List V5
Source checked
Nov 10, 2026
References
5 linked sources
Open source record