Description
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 execute arbitrary scripts due to cross-site scripting. Certain URL fields are not sufficiently validated, so malicious script content could run in another user's browser session.
Published: 2026-11-07
Score: 5.4 Medium
EPSS: < 1% Very Low
KEV: No
Impact: Arbitrary script execution via cross-site scripting
Action: Immediate Patch
AI Analysis

Impact

IBM API Connect 10.0.8.0 through 10.0.8.12 and 12.1.0.0 through 12.1.1.2 contain a cross‑site scripting flaw that allows a remote authenticated attacker to inject and execute malicious scripts. Certain URL fields are not sufficiently validated, permitting script content to run in another user’s browser session and potentially enabling session hijacking or data theft.

Affected Systems

Systems running IBM API Connect 10.0.8.0 to 10.0.8.12 or 12.1.0.0 to 12.1.1.2 are affected. IBM has released patched versions 10.0.8.13 and 12.1.1.3; upgrading to either of these fixes the vulnerability.

Risk and Exploitability

The CVSS score of 5.4 indicates medium severity, and the EPSS score is not available. The vulnerability is not listed in the CISA KEV catalog. Because authentication is required, attackers with valid credentials – including insiders or those who have stolen credentials – can exploit the XSS vector, compromising user sessions and potentially exfiltrating data. Until the patched release is deployed, the risk remains present.

Generated by OpenCVE AI on November 7, 2026 at 08:48 UTC.

Remediation

Vendor Solution

IBM strongly recommends addressing the vulnerability now by upgrading to v12.1.1.3 Fix Central Link: https://www.ibm.com/support/pages/node/7290205 IBM strongly recommends addressing the vulnerability now by upgrading to 10.0.8.13Fix Central Link: https://www.ibm.com/support/fixcentral/swg/selectFixes?parent=ibm%7EWebSphere&product=ibm/WebSphere/IBM+API+Connect&release=10.0.8.12&platform=All&function=all

OpenCVE Recommended Actions

  • Upgrade IBM API Connect to version 10.0.8.13 or 12.1.1.3 using IBM Fix Central following the guidance on the Fix Central page.
  • Deploy a Web Application Firewall rule to block or sanitize script payloads in URL parameters until the patch is applied.
  • Implement strict input validation and output encoding on all URL fields to adhere to CWE‑79 best practices and prevent future XSS exploitation.

Generated by OpenCVE AI on November 7, 2026 at 08:48 UTC.

Tracking

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Advisories

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History

Sat, 07 Nov 2026 04:45:00 +0000

Type Values Removed Values Added
Description 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 execute arbitrary scripts due to cross-site scripting. Certain URL fields are not sufficiently validated, so malicious script content could run in another user's browser session.
Title Multiple Vulnerabilities in IBM API Connect
First Time appeared Ibm
Ibm api Connect
Weaknesses CWE-79
CPEs cpe:2.3:a:ibm:api_connect:10.0.8.0:*:*:*:*:*:*:*
cpe:2.3:a:ibm:api_connect:10.0.8.12:*:*:*:*:*:*:*
cpe:2.3:a:ibm:api_connect:12.1.0.0:*:*:*:*:*:*:*
cpe:2.3:a:ibm:api_connect:12.1.1.2:*:*:*:*:*:*:*
Vendors & Products Ibm
Ibm api Connect
References
Metrics cvssV3_1

{'score': 5.4, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N'}

Subscriptions

Ibm Api Connect
cve-icon MITRE

Status: PUBLISHED

Assigner: ibm

Published:

Updated: 2026-11-07T04:31:56.694Z

Reserved: 2026-07-24T17:09:34.223Z

Link: CVE-2026-17139

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Awaiting Analysis

Published: 2026-11-07T05:18:27.030

Modified: 2026-11-07T05:18:27.160

Link: CVE-2026-17139

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-11-07T09:00:06Z

Weaknesses
  • CWE-79

    Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')