---
id: "CVE-2026-18836"
page: "https://infrastack.ai/live/CVE-2026-18836"
kind: "vulnerability"
aliases: ["CVE-2026-18836"]
title: "IBM API Connect: server-side request forgery leaks sensitive information remotely"
severity: "critical"
cvss: 9.3
epss: null
exploited: false
status: "open"
category: "vendor"
products: [{"name": "IBM API Connect", "fixed": ["10.0.8.13"], "affected": ">= 10.0.8.0, <= 10.0.8.12", "ecosystem": "vendor"}, {"name": "IBM API Connect V12 OnPrem", "fixed": ["12.1.1.3"], "affected": ">= 12.1.0.0, <= 12.1.1.2", "ecosystem": "vendor"}]
ecosystems: []
tags: ["api-gateway", "ibm-api-connect", "self-hosted", "ssrf", "vendor"]
not_affected_if: ["unaffected-version"]
published_at: "2026-11-07T05:18:59+00:00"
first_seen_at: "2026-11-07T05:46:08+00:00"
updated_at: "2026-11-07T05:50:11+00:00"
sources: [{"source": "nvd", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-18836", "first_seen_at": "2026-11-07T05:46:08+00:00"}, {"source": "analyst", "url": "https://www.ibm.com/support/pages/node/7295637", "first_seen_at": "2026-11-07T05:50:11+00:00", "cites": ["https://www.ibm.com/support/pages/node/7295637", "https://www.ibm.com/support/pages/node/7295635"]}]
exploit_sources: []
---

# IBM API Connect: server-side request forgery leaks sensitive information remotely

Link for people: https://infrastack.ai/live/CVE-2026-18836 (this .md is for agents)

IBM API Connect versions 10.0.8.0 through 10.0.8.12 and 12.1.0.0 through 12.1.1.2 contain a server-side request forgery flaw. A remote attacker can make the server send requests to destinations of their choice and read the responses, which exposes sensitive information.

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

## Affected

- vendor:IBM API Connect affected >= 10.0.8.0, <= 10.0.8.12 fixed 10.0.8.13
- vendor:IBM API Connect V12 OnPrem affected >= 12.1.0.0, <= 12.1.1.2 fixed 12.1.1.3

## How to check

Check your API Connect version. Vulnerable: 10.0.8.0 through 10.0.8.12, and V12 OnPrem 12.1.0.0 through 12.1.1.2. Fixed: 10.0.8.13 and v12.1.1.3. IBM's CVSS vector (AV:N/AC:L/PR:N/UI:N) rates it as needing no credentials.

## Fix

Upgrade API Connect 10.0.8.x to 10.0.8.13; upgrade API Connect V12 OnPrem 12.1.x to v12.1.1.3 (Fix Central: https://www.ibm.com/support/pages/node/7290205). IBM lists no workarounds or mitigations.

## Timeline

- 2026-11-07T05:46:08+00:00 nvd https://nvd.nist.gov/vuln/detail/CVE-2026-18836
- 2026-11-07T05:50:11+00:00 analyst https://www.ibm.com/support/pages/node/7295637 — Read IBM bulletins 7295637 (10.0.8.13) and 7295635 (v12.1.1.3), both list CVE-2026-18836, CWE-918, CVSS 9.3 PR:N; no workarounds. No exploitation or PoC found; did not search social posts.

## Documents

- [advisory] IBM Security Bulletin: Multiple Vulnerabilities in IBM API Connect (10.0.8.13) https://www.ibm.com/support/pages/node/7295637
- [advisory] IBM Security Bulletin: Multiple Vulnerabilities in IBM API Connect (v12.1.1.3) https://www.ibm.com/support/pages/node/7295635

## From the sources

IBM API Connect 10.0.8.0 through 10.0.8.12 and 12.1.0.0 through 12.1.1.2 could allow a remote attacker to obtain sensitive information due to server-side request forgery. The affected component can be made to send requests to unintended destinations and return the response to the attacker.

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_Free to read, with fair use of about 60 pages a minute. For higher limits or API access: sales@infrastack.ai_