CVE-2026-11708Network attack vector

Unauthenticated browser-session compromise via integrated-help XSS

Published Jun 30, 2026 · Updated Jun 30, 2026

Cross-site scripting in IBM WebSphere Application Server 8.5 and 9.0 allows remote attackers to execute browser-side code through integrated help. The flaw is in the administrative console's integrated help system, but IBM has not disclosed the affected endpoint or neutralization failure. Exploitation requires no prior privileges but does require user interaction; successful code runs in the victim's browser context, enabling data access or actions available to that session.

CVSS severity9.3
Critical
EPSS probability0.38%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Cross-site scripting in IBM WebSphere Application Server 8.5 and 9.0 allows remote attackers to execute browser-side code through integrated help. The flaw is in the administrative console's integrated help system, but IBM has not disclosed the affected endpoint or neutralization failure. Exploitation requires no prior privileges but does require user interaction; successful code runs in the victim's browser context, enabling data access or actions available to that session.

The record

CVE
CVE-2026-11708
Published
Jun 30, 2026
Updated
Jun 30, 2026
Vendor
OpenBMC Project
Product
IBM WebSphere Application Server
Classifications
CWE-79, T1189
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jun 30, 2026CVE publishedPublication date reported by the CVE source.
  2. Jun 30, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=8.5
  2. Affected versionversion=9.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

OpenBMC Project · IBM WebSphere Application Serverversion=8.5; version=9.0

Published CVSS scores

9.3IBMCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
T1189Drive-by Compromise

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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