---
id: "CVE-2026-17279"
page: "https://infrastack.ai/live/CVE-2026-17279"
kind: "vulnerability"
aliases: ["CVE-2026-17279"]
title: "IBM API Connect: authenticated requests can stall service into denial of service"
severity: "high"
cvss: 7.7
epss: null
exploited: false
status: "open"
category: "infrastructure"
products: [{"name": "API Connect", "fixed": ["10.0.8.13"], "affected": ">= 10.0.8.0, <= 10.0.8.12", "ecosystem": "vendor"}, {"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", "denial-of-service", "ibm-api-connect", "infrastructure", "self-hosted"]
not_affected_if: ["unaffected-version"]
published_at: "2026-11-07T05:18:33+00:00"
first_seen_at: "2026-11-07T05:46:01+00:00"
updated_at: "2026-11-07T06:23:06+00:00"
sources: [{"source": "nvd", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-17279", "first_seen_at": "2026-11-07T05:46:01+00:00"}, {"source": "analyst", "url": "https://www.ibm.com/support/pages/security-bulletin-multiple-vulnerabilities-ibm-api-connect-41", "first_seen_at": "2026-11-07T06:23:06+00:00", "cites": ["https://www.ibm.com/support/pages/security-bulletin-multiple-vulnerabilities-ibm-api-connect-41", "https://www.ibm.com/support/pages/security-bulletin-multiple-vulnerabilities-ibm-api-connect-39"]}]
exploit_sources: []
---

# IBM API Connect: authenticated requests can stall service into denial of service

Link for people: https://infrastack.ai/live/CVE-2026-17279 (this .md is for agents)

Certain requests to IBM API Connect 10.0.8.0 through 10.0.8.12 and 12.1.0.0 through 12.1.1.2 can stall internal processing from uncontrolled resource consumption. A remote attacker with valid credentials can make the service unavailable.

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

## Affected

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

## How to check

Check your installed API Connect version. Affected: 10.0.8.0 through 10.0.8.12, and 12.1.0.0 through 12.1.1.2 (IBM lists V12 OnPrem). Fixed: 10.0.8.13 and 12.1.1.3. Higher risk if untrusted users can hold valid accounts.

## Fix

Upgrade to IBM API Connect 10.0.8.13 (10.0.8 line) or v12.1.1.3 (12.1 line). No workaround from IBM.

## Timeline

- 2026-11-07T05:46:01+00:00 nvd https://nvd.nist.gov/vuln/detail/CVE-2026-17279
- 2026-11-07T06:23:06+00:00 analyst https://www.ibm.com/support/pages/security-bulletin-multiple-vulnerabilities-ibm-api-connect-41 — Read both IBM bulletins: 10.0.8.x fixed in 10.0.8.13 (bulletin -41), 12.1.x OnPrem fixed in 12.1.1.3 (bulletin -39); both say workarounds: None. 12.1 tail read directly; 10.0.8 table came via WebFetch summary (bulletin metadata says 10.0.8.0-10.0.8.13, table 10.0.8.0-10.0.8.12). No exploitation or PoC found (X not searched; low-profile authenticated DoS).

## Documents

- [advisory] IBM Security Bulletin: Multiple Vulnerabilities in IBM API Connect (10.0.8.13) https://www.ibm.com/support/pages/security-bulletin-multiple-vulnerabilities-ibm-api-connect-41
- [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 10.0.8.0 through 10.0.8.12 and 12.1.0.0 through 12.1.1.2 could allow a remote authenticated attacker to cause a denial of service due to uncontrolled resource consumption. Certain requests can cause internal processing to stall, which could make the service unavailable.

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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_