CVE-2025-36298: IBM Sterling B2B Integrator XSS in Ebics server

CVE-2025-36298 · Severity: medium · CVSS 5.4 · Published 2026-07-30

IBM Sterling B2B Integrator and Sterling File Gateway are platforms used by organizations to manage secure data transfers and business process automation. A security flaw in the Ebics server component allows an authorized user to inject malicious scripts into the web interface. If another user views the affected page, an attacker could potentially steal login credentials or hijack their active session, compromising sensitive business data.

Technologies: IBM Sterling File Gateway, IBM Sterling B2b Integrator. Vendors: IBM.

Quick answers

Is CVE-2025-36298 exploited in the wild?
No. Junglewise Threat Intelligence has no report of CVE-2025-36298 being exploited in the wild.
How severe is CVE-2025-36298?
Medium severity, with a CVSS score of 5.4, published 30 July 2026.
Which products and versions are affected?
IBM Sterling File Gateway 6.1.2.0 - 6.1.2.7_2, 6.2.0.0 - 6.2.0.5_2, 6.2.1.0 - 6.2.1.1_2, 6.2.2.0 - 6.2.2.0_1; IBM Sterling B2b Integrator 6.1.2.0 - 6.1.2.7_2, 6.2.0.0 - 6.2.0.5_2, 6.2.1.0 - 6.2.1.1_2, 6.2.2.0 - 6.2.2.0_1.
Is there a fix for CVE-2025-36298?
No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.
How is CVE-2025-36298 attacked?
It is attacked over the network, in a network appliance.
Am I affected by CVE-2025-36298?
Check whether you run IBM Sterling File Gateway or IBM Sterling B2b Integrator 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

A stored cross-site scripting (XSS) vulnerability exists in the Ebics server component of IBM Sterling B2B Integrator and Sterling File Gateway. The flaw is caused by improper neutralization of user-supplied input during web page generation (CWE-79). An authenticated attacker with low privileges can inject malicious JavaScript into the Web UI. When a victim interacts with the compromised interface, the script executes in their browser context, potentially leading to credential disclosure or session hijacking. IBM has released patches in versions 6.1.2.8, 6.2.0.6, 6.2.1.2, and 6.2.2.1 to address this issue.

Affected products

  • IBM Sterling B2B Integrator 6.1.2.0 - 6.1.2.7_2, 6.2.0.0 - 6.2.0.5_2, 6.2.1.0 - 6.2.1.1_2, 6.2.2.0 - 6.2.2.0_1
  • IBM Sterling File Gateway 6.1.2.0 - 6.1.2.7_2, 6.2.0.0 - 6.2.0.5_2, 6.2.1.0 - 6.2.1.1_2, 6.2.2.0 - 6.2.2.0_1

Timeline

  • 2026-07-21: advisory: Initial publication by IBM
  • 2026-07-30: disclosed: NVD publication date

References

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