CVE-2026-11708

Critical

Published: 30 June 2026

Published

30 June 2026

Modified

02 July 2026

KEV Added

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Patch

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CVSS Score v3.1 9.3 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:N

EPSS Score 0.0022 12.1th percentile

Risk Priority 70 floored blend · peak EPSS

Summary

CVE-2026-11708 is a critical-severity Cross-site Scripting (CWE-79) vulnerability in Ibm Websphere Application Server. Its CVSS base score is 9.3 (Critical).

Operationally, exploitation aligns with the MITRE ATT&CK technique Exploit Public-Facing Application (T1190); ranked at the 12.1th percentile by exploit likelihood (below the median); it is not currently listed in the CISA KEV catalog.

OWASP Top 10 for Web (2025)

EU & UK References

🇪🇺 ENISA EUVD: EUVD-2026-40397

Vulnerability details

IBM WebSphere Application Server 9.0, and 8.5 is affected by a cross-site scripting vulnerability in the administrative console's integrated help system.

CWE(s): CWE-79

Related Threats

MITRE ATT&CK Enterprise TechniquesAI

T1190 Exploit Public-Facing Application Initial Access

Adversaries may attempt to exploit a weakness in an Internet-facing host or system to initially access a network.

attack.mitre.org →

T1185 Browser Session Hijacking Collection

Adversaries may take advantage of security vulnerabilities and inherent functionality in browser software to change content, modify user-behaviors, and intercept information as part of various browser session hijacking techniques.

attack.mitre.org →

Why these techniques?

XSS (CWE-79) in admin console directly enables exploitation of the web application (T1190) and browser session hijacking against admins (T1185).

Confidence: HIGH · MITRE ATT&CK Enterprise v19.0