IBM Support

Security Bulletin: Swagger vulnerability affects WebSphere Application Server Liberty (CVE-2019-17495)

Security Bulletin


There is a Swagger vulnerability that affects WebSphere Application Server Liberty. This affects the mpOpen-1.x and openAPI-3.x features. This vulnerability has been addressed.

Vulnerability Details

CVEID:   CVE-2019-17495
DESCRIPTION:   Swagger UI could allow a remote attacker to obtain sensitive information, caused by a CSS injection flaw. By using the relative path overwrite (RPO) attack technique, an attacker could exploit this vulnerability to obtain sensitive information.
CVSS Base score: 5.3
CVSS Temporal Score: See: for the current score.
CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N)

Affected Products and Versions

Affected Product(s)Version(s)
WebSphere Application Server Liberty17.0.0.3 -


The recommended solution is to apply the interim fix, Fix Pack or PTF containing the APAR for each named product as soon as practical.

For WebSphere Application Server Liberty using mpOpenAPI-1.0, mpOpenAPI-1.1, openAPI-3.0 or openAPI-3.1 features:

· Upgrade to minimal fix pack levels as required by interim fix and then apply Interim Fix PH20161
· Apply Fix Pack or later (targeted availability 1Q2020).

Additional interim fixes may be available and linked off the interim fix download page.

Workarounds and Mitigations


Get Notified about Future Security Bulletins



Change History

20 January 2020: Initial Publication

*The CVSS Environment Score is customer environment specific and will ultimately impact the Overall CVSS Score. Customers can evaluate the impact of this vulnerability in their environments by accessing the links in the Reference section of this Security Bulletin.


Review the IBM security bulletin disclaimer and definitions regarding your responsibilities for assessing potential impact of security vulnerabilities to your environment.

Document Location


[{"Business Unit":{"code":"BU053","label":"Cloud & Data Platform"},"Product":{"code":"SSEQTP","label":"WebSphere Application Server"},"Component":"Liberty","Platform":[{"code":"PF002","label":"AIX"},{"code":"PF012","label":"IBM i"},{"code":"PF016","label":"Linux"},{"code":"PF033","label":"Windows"},{"code":"PF035","label":"z\/OS"}],"Version":"all","Edition":"","Line of Business":{"code":"LOB45","label":"Automation"}}]

Document Information

Modified date:
20 January 2020