# CVE-2026-117545: IBM webMethods Integration Server authentication bypass

Source: https://junglewise.ai/threats/cve-2026-117545-ibm-webmethods-integration-server-12-1-could-allow-a-remote  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-11-08. Updated: 2026-11-08  
License: CC BY 4.0 with a link back

CVE-2026-117545 · Severity: high · CVSS 8.8 · Published 2026-11-08

IBM webMethods Integration Server is a platform for automating enterprise integrations and data flows. An authenticated attacker can bypass the two-factor authentication mechanism, gaining unauthorized access to critical integration services. This could allow an attacker to exfiltrate data, modify integration configurations, or disrupt business-critical workflows.

Technologies: [IBM webMethods Integration Server](https://junglewise.ai/threats/technologies/webmethods-integration-server). Vendors: [IBM](https://junglewise.ai/threats/vendors/ibm).

## Quick answers

**Is CVE-2026-117545 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-117545 being exploited in the wild.

**How severe is CVE-2026-117545?** High severity, with a CVSS score of 8.8, published 8 November 2026.

**Which products and versions are affected?** IBM webMethods Integration Server 12.1.

**Is there a fix for CVE-2026-117545?** Yes: fixed in IS_12.1_Core_Fix1 or later. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

**How is CVE-2026-117545 attacked?** It is attacked over the network.

**Am I affected by CVE-2026-117545?** Check whether you run IBM webMethods Integration Server at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## How to fix

- Fixed in IS_12.1_Core_Fix1 or later

## Technical details

IBM webMethods Integration Server 12.1 suffers from improper authentication (CWE-287) that allows a remote authenticated attacker to bypass the two-factor authentication mechanism. The vulnerability requires an existing valid account (PR:L) but then grants the attacker full confidentiality, integrity, and availability impact over the service. A fix is available via core patch IS_12.1_Core_Fix1 or later.

## Affected products

- IBM webMethods Integration Server 12.1

## Timeline

- 2026-11-03: advisory

## References

- [https://www.ibm.com/support/pages/node/7295298](https://www.ibm.com/support/pages/node/7295298)

## Related threats

- [IBM webMethods Integration Server authentication bypass in 2FA](https://junglewise.ai/threats/cve-2026-118904-ibm-webmethods-integration-server-12-1-could-allow-a-remote)
- [IBM webMethods Integration Server XXE injection](https://junglewise.ai/threats/cve-2026-2310-ibm-webmethods-integration-server-xxe-injection)
- [IBM webMethods Integration remote code execution in WmServiceMock](https://junglewise.ai/threats/cve-2026-12118-ibm-webmethods-integration-remote-code-execution-in-wmservicemock)
- [IBM webMethods Integration Server SSRF in Add Subscriber page](https://junglewise.ai/threats/cve-2025-14290-ibm-webmethods-integration-server-ssrf-in-add-subscriber-page)