---
id: "CVE-2026-18546"
page: "https://infrastack.ai/live/CVE-2026-18546"
kind: "vulnerability"
aliases: ["CVE-2026-18546"]
title: "IBM CockroachDB PostgreSQL for IBM VPC: SSRF lets an authenticated user probe internal networks"
severity: "medium"
cvss: 5.4
epss: null
exploited: false
status: "open"
category: "infrastructure"
products: []
ecosystems: []
tags: ["cockroachdb", "ibm-cloud", "infrastructure", "postgresql-compatible", "self-hosted"]
not_affected_if: ["no-authenticated-users", "unaffected-versions"]
published_at: "2026-11-08T18:17:04+00:00"
first_seen_at: "2026-11-08T18:22:22+00:00"
updated_at: "2026-11-08T18:22:55+00:00"
sources: [{"source": "nvd", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-18546", "first_seen_at": "2026-11-08T18:22:22+00:00"}]
exploit_sources: []
---

# IBM CockroachDB PostgreSQL for IBM VPC: SSRF lets an authenticated user probe internal networks

Link for people: https://infrastack.ai/live/CVE-2026-18546 (this .md is for agents)

IBM CockroachDB PostgreSQL for IBM VPC versions 26.2.0 through 26.2.3, 25.4.0 through 25.4.12, and 25.2.0 through 25.2.20 have a server-side request forgery flaw. An logged-in attacker can make the server send requests to other hosts, which can be used to map the internal network or support further attacks.

_Summary, check and fix written by a model from the sources; labelled as such._

## How to check

- Check the installed version of IBM CockroachDB PostgreSQL for IBM VPC against the affected ranges: `26.2.0` to `26.2.3`, `25.4.0` to `25.4.12`, `25.2.0` to `25.2.20`.

## Timeline

- 2026-11-08T18:22:22+00:00 nvd https://nvd.nist.gov/vuln/detail/CVE-2026-18546

## From the sources

IBM CockroachDB PostgreSQL for IBM VPC 26.2.0 through 26.2.3, 25.4.0 through 25.4.12, and 25.2.0 through 25.2.20 is vulnerable to server-side request forgery (SSRF). This may allow an authenticated attacker to send unauthorized requests from the system, potentially leading to network enumeration or facilitating other attacks.

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