CVE-2025-36396Network attack vector

Credential theft via undisclosed Web UI XSS

Published Jan 20, 2026 · Updated Jan 20, 2026

Cross-site scripting in IBM Application Gateway 23.10 through 25.09 allows remote authenticated users to steal session credentials. The Web UI permits attacker-supplied JavaScript to execute without adequate neutralization, but IBM has not disclosed the affected field, route, or rendering function. Exploitation requires low-privileged authentication and a victim to view the injected content; impact is limited to disclosure and UI changes within that trusted browser session.

CVSS severity5.4
Medium
EPSS probability0.15%
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 Application Gateway 23.10 through 25.09 allows remote authenticated users to steal session credentials. The Web UI permits attacker-supplied JavaScript to execute without adequate neutralization, but IBM has not disclosed the affected field, route, or rendering function. Exploitation requires low-privileged authentication and a victim to view the injected content; impact is limited to disclosure and UI changes within that trusted browser session.

The record

CVE
CVE-2025-36396
Published
Jan 20, 2026
Updated
Jan 20, 2026
Vendor
IBM
Product
Application Gateway
Classifications
CWE-79, T1203
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Jan 20, 2026CVE publishedPublication date reported by the CVE source.
  2. Jan 20, 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=23.10 <=25.09

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

IBM · Application Gatewayversion=23.10 <=25.09

Published CVSS scores

5.4IBMCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/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
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
T1203Exploitation for Client Execution

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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