IBM WebSphere Application Server URL cross site scripting

CVSS Meta Temp Score
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CTI Interest Score
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4.4$0-$5k0.00

Summaryinfo

A vulnerability was found in IBM WebSphere Application Server and WebSphere Application Server Liberty. It has been classified as problematic. This vulnerability affects unknown code of the component URL Handler. The manipulation leads to cross site scripting. This vulnerability is uniquely identified as CVE-2025-12635. The attack is possible to be carried out remotely. No exploit exists. Upgrading the affected component is recommended.

Detailsinfo

A vulnerability was found in IBM WebSphere Application Server and WebSphere Application Server Liberty (unknown version). It has been rated as problematic. This issue affects an unknown code block of the component URL Handler. The manipulation with an unknown input leads to a cross site scripting vulnerability. Using CWE to declare the problem leads to CWE-79. The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users. Impacted is integrity. The summary by CVE is:

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.

The advisory is shared at ibm.com. The identification of this vulnerability is CVE-2025-12635 since 11/03/2025. The exploitation is known to be easy. The attack may be initiated remotely. It demands that the victim is doing some kind of user interaction. Neither technical details nor an exploit are publicly available. The price for an exploit might be around USD $0-$5k at the moment (estimation calculated on 02/04/2026). MITRE ATT&CK project uses the attack technique T1059.007 for this issue.

The vulnerability scanner Nessus provides a plugin with the ID 277790 (IBM WebSphere Application Server 8.5.x < 8.5.5.29 / 9.x < 9.0.5.27 / Liberty 17.0.0.3 < 26.0.0.1 XSS (7254078)), which helps to determine the existence of the flaw in a target environment.

Upgrading eliminates this vulnerability.

The vulnerability is also documented in the databases at Tenable (277790) and CERT Bund (WID-SEC-2025-2759). If you want to get the best quality for vulnerability data then you always have to consider VulDB.

Affected

  • IBM Rational ClearCase
  • IBM Business Automation Workflow
  • IBM WebSphere Application Server
  • IBM WebSphere Service Registry and Repository

Productinfo

Type

Vendor

Name

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 4.4
VulDB Meta Temp Score: 4.4

VulDB Base Score: 3.5
VulDB Temp Score: 3.4
VulDB Vector: 🔒
VulDB Reliability: 🔍

CNA Base Score: 5.4
CNA Vector (ibm): 🔒

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Cross site scripting
CWE: CWE-79 / CWE-94 / CWE-74
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Yes

Availability: 🔒
Status: Not defined

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

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Nessus ID: 277790
Nessus Name: IBM WebSphere Application Server 8.5.x < 8.5.5.29 / 9.x < 9.0.5.27 / Liberty 17.0.0.3 < 26.0.0.1 XSS (7254078)

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Timelineinfo

11/03/2025 CVE reserved
12/09/2025 +36 days Advisory disclosed
12/09/2025 +0 days VulDB entry created
02/04/2026 +57 days VulDB entry last update

Sourcesinfo

Vendor: ibm.com

Advisory: ibm.com
Status: Confirmed

CVE: CVE-2025-12635 (🔒)
GCVE (CVE): GCVE-0-2025-12635
GCVE (VulDB): GCVE-100-334997
CERT Bund: WID-SEC-2025-2759 - IBM WebSphere Application Server: Schwachstelle erm&ouml;glicht Cross-Site Scripting

Entryinfo

Created: 12/09/2025 09:52
Updated: 02/04/2026 19:17
Changes: 12/09/2025 09:52 (63), 12/09/2025 13:34 (2), 01/02/2026 09:35 (7), 01/12/2026 09:56 (1), 02/04/2026 19:17 (1)
Complete: 🔍
Cache ID: 216:1E3:103

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