---
id: "CVE-2026-17331"
page: "https://infrastack.ai/live/CVE-2026-17331"
kind: "vulnerability"
aliases: ["CVE-2026-17331"]
title: "IBM API Connect: remote attacker can read arbitrary files on server"
severity: "high"
cvss: 7.5
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", "ibm-api-connect", "path-traversal", "self-hosted", "vendor"]
not_affected_if: ["versions-outside-range"]
published_at: "2026-11-07T05:18:43+00:00"
first_seen_at: "2026-11-07T05:46:04+00:00"
updated_at: "2026-11-07T06:16:29+00:00"
sources: [{"source": "nvd", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-17331", "first_seen_at": "2026-11-07T05:46:04+00:00"}, {"source": "analyst", "url": "https://www.ibm.com/support/pages/security-bulletin-multiple-vulnerabilities-ibm-api-connect-39", "first_seen_at": "2026-11-07T06:16:29+00:00", "cites": ["https://www.ibm.com/support/pages/security-bulletin-multiple-vulnerabilities-ibm-api-connect-39"]}]
exploit_sources: []
---

# IBM API Connect: remote attacker can read arbitrary files on server

Link for people: https://infrastack.ai/live/CVE-2026-17331 (this .md is for agents)

IBM API Connect 12.1.0.0 through 12.1.1.2 lets a remote attacker read arbitrary files on the server because a file name or path is controlled from outside. An attacker can read server files they should not be able to see, such as configuration or credentials.

_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

- Find the running API Connect V12 on-prem version (admin console or your installation/upgrade records).
- You are affected if it is between v12.1.0.0 and v12.1.1.2 inclusive; v12.1.1.3 or later contains the fix.
- IBM does not say which endpoints are reachable, so also check whether the management or gateway services are reachable from untrusted networks.

## Fix

Upgrade IBM API Connect to v12.1.1.3 (Fix Central: https://www.ibm.com/support/pages/node/7290205). IBM lists no workarounds or mitigations.

## Timeline

- 2026-11-07T05:46:04+00:00 nvd https://nvd.nist.gov/vuln/detail/CVE-2026-17331
- 2026-11-07T06:16:29+00:00 analyst https://www.ibm.com/support/pages/security-bulletin-multiple-vulnerabilities-ibm-api-connect-39 — IBM bulletin (multiple vulns, v12.1.1.3) lists CVE-2026-17331, CWE-73, CVSS 7.5 AV:N/PR:N; affected API Connect V12 OnPrem v12.1.0.0-v12.1.1.2, fix v12.1.1.3 (Fix Central node/7290205), workarounds none. Affected endpoints not stated by IBM. Not exploited per sources.

## 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 attacker to read arbitrary files on the server due to external control of a file name or path.

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