---
id: "CVE-2026-17353"
page: "https://infrastack.ai/live/CVE-2026-17353"
kind: "vulnerability"
aliases: ["CVE-2026-17353"]
title: "IBM API Connect: server-side request forgery leaks data and bypasses restrictions"
severity: "critical"
cvss: 9.6
epss: null
exploited: false
status: "open"
category: "vendor"
products: [{"name": "API Connect V12 OnPrem", "fixed": ["12.1.1.3"], "affected": ">= 12.1.0.0, <= 12.1.1.2", "ecosystem": "vendor"}]
ecosystems: []
tags: ["api-gateway", "authenticated", "ibm-api-connect", "self-hosted", "ssrf", "vendor"]
not_affected_if: ["unknown"]
published_at: "2026-11-07T05:18:46+00:00"
first_seen_at: "2026-11-07T05:46:05+00:00"
updated_at: "2026-11-07T05:53:16+00:00"
sources: [{"source": "nvd", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-17353", "first_seen_at": "2026-11-07T05:46:05+00:00"}, {"source": "analyst", "url": "https://www.ibm.com/support/pages/security-bulletin-multiple-vulnerabilities-ibm-api-connect-39", "first_seen_at": "2026-11-07T05:53:16+00:00", "cites": ["https://www.ibm.com/support/pages/security-bulletin-multiple-vulnerabilities-ibm-api-connect-39"]}]
exploit_sources: []
---

# IBM API Connect: server-side request forgery leaks data and bypasses restrictions

Link for people: https://infrastack.ai/live/CVE-2026-17353 (this .md is for agents)

IBM API Connect versions 12.1.0.0 through 12.1.1.2 contain a server-side request forgery flaw. A signed-in remote attacker can make the server send requests on their behalf, which can expose sensitive information and bypass security restrictions.

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

## Affected

- vendor: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 V12 OnPrem version. Versions v12.1.0.0 through v12.1.1.2 are affected; v12.1.1.3 is fixed. IBM's 10.0.8.x line is not listed for this CVE. IBM lists no workaround.

## Fix

Upgrade IBM API Connect V12 OnPrem to v12.1.1.3 (Fix Central: https://www.ibm.com/support/pages/node/7290205)

## Timeline

- 2026-11-07T05:46:05+00:00 nvd https://nvd.nist.gov/vuln/detail/CVE-2026-17353
- 2026-11-07T05:53:16+00:00 analyst https://www.ibm.com/support/pages/security-bulletin-multiple-vulnerabilities-ibm-api-connect-39 — Read IBM bulletin (-39): CVE-2026-17353 listed, V12 OnPrem v12.1.0.0-v12.1.1.2, fixed in v12.1.1.3, IBM lists workarounds: None. Not in the 10.0.8.13 bulletin. No exploitation/PoC found (Feedly says none).

## Documents

- [advisory] IBM Security Bulletin: Multiple Vulnerabilities in IBM API Connect (v12.1.1.3) https://www.ibm.com/support/pages/security-bulletin-multiple-vulnerabilities-ibm-api-connect-39

## From the sources

IBM API Connect 12.1.0.0 through 12.1.1.2 could allow a remote authenticated attacker to obtain sensitive information and bypass security restrictions due to server-side request forgery.

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