gcdRadar
archive/Patch now/AIR-2026-1862
closedclosed 10 Nov 2026Patch now2 Disclosed vulnerabilityAI

CVE-2026-125321: pgEdge Postgres MCP Server rate‑limit bypass via X‑Forwarded‑For

pgEdge Postgres MCP Server

pgEdge Postgres MCP Server (pre‑1.1.0) uses the leftmost X‑Forwarded‑For header for login rate limiting, allowing attackers to spoof addresses and evade throttling or consume another user's quota. The issue is fixed in version 1.1.0.

why this severityDisclosed vulnerability with CVE, no confirmed exploitation.

disclosed CVENo confirmed exploitation, so this record is tracked as a disclosed vulnerability and not counted as an incident. It moves into the counts if CISA or the vendor confirms exploitation. Why

CVSS
6.5
EPSS
<0.01 · top 59% · 2026-11-13
EPSS scores by FIRST
fix status
Patched
affected
pgEdge Postgres MCP Server < 1.1.0
fixed in
pgEdge Postgres MCP Server >= 1.1.0
first report
10 Nov 2026
last update
10 Nov 2026
CVE ids
CVE-2026-125321other records

What to do

Upgrade pgEdge Postgres MCP Server to version 1.1.0 or later.

Timeline · 1

  1. 10 Nov 2026CVE-2026-125321: pgEdge Postgres MCP Server enables SQL queries against PostgreSQL databases through Model Context Protocol compatible clients.

Sources · 1

Advisories and databases

  1. 2026-11-10
    CVE-2026-125321: pgEdge Postgres MCP Server enables SQL queries against PostgreSQL databases through Model Context Protocol compatible clients.
    NVD · nvd.nist.gov/vuln/detail/CVE-2026-125321

Titles and links belong to their publishers. The summary above is written by gcdRadar in its own words; data is CC BY-SA 4.0.

Classification

lane
Patch now
AI role
Attack on AI
categories
Infrastructure vulnerability
severity
2 · Disclosed vulnerability
fix status
Patched
targets
Framework / tooling
owasp llm top 10
LLM03:2025 Supply Chain
mitre atlas
no technique for these categories
tags
pgedgemcprate-limit
dates
happened 10 Nov 2026 · first reported 10 Nov 2026
origin
NVD
Vulnerability record from NVD / the GitHub Advisory Database. This product uses the NVD API but is not endorsed or certified by the NVD.
record
confidence 0.95 · created 2026-11-10 18:43Z · updated 2026-11-10 18:43Z

Lane, AI role, categories and severity come from the classifier; the OWASP and ATLAS rows are derived from the categories. How these are assigned

Copy a brief

This record as a short Markdown brief, for a ticket, a chat or a coding agent.

the brief as text
# CVE-2026-125321: pgEdge Postgres MCP Server rate‑limit bypass via X‑Forwarded‑For

https://gcdradar.vercel.app/incidents/cve-2026-125321-pgedge-postgres-mcp-server-rate-limit-bypass · AIR-2026-1862 · closed 2026-11-10

- Lane: Patch now
- Severity: 2 (Disclosed vulnerability): Disclosed vulnerability with CVE, no confirmed exploitation.
- Fix status: Patched
- First reported: 2026-11-10
- AI role: Attack on AI
- Products: pgEdge Postgres MCP Server
- CVE ids: CVE-2026-125321
- CVSS: 6.5

## Summary

pgEdge Postgres MCP Server (pre‑1.1.0) uses the leftmost X‑Forwarded‑For header for login rate limiting, allowing attackers to spoof addresses and evade throttling or consume another user's quota. The issue is fixed in version 1.1.0.

## What to do

Upgrade pgEdge Postgres MCP Server to version 1.1.0 or later.

## Affected and fixed versions

- Affected: pgEdge Postgres MCP Server < 1.1.0
- Fixed in: pgEdge Postgres MCP Server >= 1.1.0

## Latest updates

- 2026-11-10: CVE-2026-125321: pgEdge Postgres MCP Server enables SQL queries against PostgreSQL databases through Model Context Protocol compatible clients. (https://nvd.nist.gov/vuln/detail/CVE-2026-125321)

## Sources

- 2026-11-10 NVD: CVE-2026-125321: pgEdge Postgres MCP Server enables SQL queries against PostgreSQL databases through Model Context Protocol compatible clients. https://nvd.nist.gov/vuln/detail/CVE-2026-125321

Verify against the vendor's advisory before changing production. Data CC BY-SA 4.0, https://gcdradar.vercel.app.

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