CVE-2025-12635

IBM WebSphere Application Server and WebSphere Application Server Liberty Cross-Site Scripting

MEDIUM

5.4

CVSS Score

Published: December 8, 2025 at 09:58 PM UTC

Updated: October 7, 2026 at 08:10 PM UTC

2 products affected across 1 vendorWebSphere Application ServerWebSphere Application Server Liberty

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Severity

MEDIUM5.4

Exploit prediction

EPSS 0.2%

SSVC

No known exploit

Description

IBM WebSphere Application Server 8.5, 9.0 and IBM WebSphere Application Server Liberty 17.0.0.3 through 25.0.0.12 are affected by cross-site scripting due to improper validation of user-supplied input. An attacker could exploit this vulnerability by using a specially crafted URL to redirect the user to a malicious site.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

WebSphere Application Server · IBM

95%

17.0.0.3 ≤ v < 26.0.0.18.5 ≤ v < 8.5.5.299.0 ≤ v ≤ 2.0.189.0 ≤ v < 9.0.5.2717.0.0.3 25.0.0.12 8.5 9.0

Affected range stops below 26.0.0.1, so it looks safe — our inference, not a vendor statement

Affected range stops below 8.5.5.29, so it looks safe — our inference, not a vendor statement

Affected range stops below 9.0.5.27, so it looks safe — our inference, not a vendor statement

WebSphere Application Server Liberty · IBM

60%

17.0.0.3 ≤ v ≤ 25.0.0.1217.0.0.3

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

Patch and advisory references

https://www.ibm.com/support/pages/node/7254078

References (1)

Vendor AdvisoryPatch

Source: cverecord

https://www.ibm.com/support/pages/node/7254078

SSVC — Action Prioritization

SSVCNo known exploitNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

5.4MEDIUMibm

Attack Vector: NETWORK
Complexity: LOW
Privileges: LOW
User Interaction: REQUIRED
Scope: CHANGED
Confidentiality: LOW
Integrity: LOW
Availability: NONE

Vector?

Quick Info

StatusANALYZED

CWE

CWE-79

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