# CVE-2026-3603: IBM Engineering Lifecycle Management XXE in Jazz Foundation

Source: https://junglewise.ai/threats/cve-2026-3603-ibm-engineering-lifecycle-management-xxe-in-jazz-foundation  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-05-26. Updated: 2026-05-26  
License: CC BY 4.0 with a link back

CVE-2026-3603 · Severity: high · CVSS 7.1 · Published 2026-05-26

IBM Engineering Lifecycle Management, a suite of tools used by organizations to manage the software development process, is vulnerable to a security flaw in how it handles XML data. An authorized user could exploit this weakness to view sensitive internal information or cause system performance issues by consuming excessive memory. This could lead to unauthorized data disclosure or disruptions in the development environment.

Technologies: [IBM Engineering Lifecycle Management - Jazz Foundation](https://junglewise.ai/threats/technologies/engineering-lifecycle-management-jazz-foundation). Vendors: [IBM](https://junglewise.ai/threats/vendors/ibm).

## Quick answers

**Is CVE-2026-3603 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-3603 being exploited in the wild.

**How severe is CVE-2026-3603?** High severity, with a CVSS score of 7.1, published 26 May 2026.

**Which products and versions are affected?** IBM Engineering Lifecycle Management - Jazz Foundation 7.0.3 iFix001 - iFix021, 7.1.0 iFix001 - iFix009, 7.2.0, 7.2.0 iFix001.

**Is there a fix for CVE-2026-3603?** A patch was published on 2026-05-26. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

**How is CVE-2026-3603 attacked?** It is attacked over the network, in a network appliance.

**Am I affected by CVE-2026-3603?** Check whether you run IBM Engineering Lifecycle Management - Jazz Foundation 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.

## Technical details

An XML External Entity (XXE) injection vulnerability exists in the Jazz Foundation component of IBM Engineering Lifecycle Management. The issue stems from improper restriction of XML external entity references (CWE-611) when the application processes XML data. A remote attacker with low-level authentication can exploit this by sending a specially crafted XML payload to the server. Successful exploitation allows the attacker to read local files, access internal network resources, or trigger a denial-of-service condition via memory exhaustion. IBM has released patches (iFixes) for versions 7.0.3, 7.1.0, and 7.2.0 to address this vulnerability.

## Affected products

- IBM Engineering Lifecycle Management - Jazz Foundation 7.0.3 iFix001 - iFix021, 7.1.0 iFix001 - iFix009, 7.2.0, 7.2.0 iFix001

## Timeline

- 2026-05-26: disclosed
- 2026-05-26: advisory
- 2026-05-26: patched

## References

- [https://www.ibm.com/support/pages/node/7274078](https://www.ibm.com/support/pages/node/7274078)

## Related threats

- [IBM Engineering Lifecycle Management XML entity expansion denial of service](https://junglewise.ai/threats/cve-2026-14979-ibm-engineering-lifecycle-management-xml-entity-expansion-denial)
- [IBM Engineering Lifecycle Management RCE in Jazz Foundation](https://junglewise.ai/threats/cve-2026-4051-ibm-engineering-lifecycle-management-rce-in-jazz-foundation)
- [IBM Engineering Lifecycle Management auth bypass in Jazz Foundation](https://junglewise.ai/threats/cve-2026-3660-ibm-engineering-lifecycle-management-auth-bypass-in-jazz)