CVE-2025-8591 PUBLISHED

Reflected Cross-Site Scripting via URL Parameter in Multiple WSO2 Products Enables UI Modification

Assigner: WSO2
Reserved: 05.08.2025 Published: 06.07.2026 Updated: 06.07.2026

The software accepts user-supplied input via a URL parameter without adequate output encoding before reflecting it back to the user's browser. This condition allows an attacker to inject malicious script content into pages served by the application.

By leveraging this weakness, an attacker can cause the user's browser to redirect to a malicious website, modify the UI of the webpage, or retrieve information from the browser. However, the impact is mitigated by the use of httpOnly flags on session-related cookies, preventing session hijacking.

Metrics

CVSS Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
CVSS Score: 6.1

Product Status

Vendor WSO2
Product WSO2 Identity Server
Versions Default: unaffected
  • unknown from 0 to 5.10.0 (excl.)
  • affected from 5.10.0 to 5.10.0.381 (excl.)
  • affected from 5.10.0 to 5.10.0.384 (excl.)
  • affected from 6.0.0 to 6.0.0.255 (excl.)
  • affected from 7.0.0 to 7.0.0.131 (excl.)
  • affected from 7.1.0 to 7.1.0.21 (excl.)
  • affected from 7.1.0 to 7.1.0.51 (excl.)
Vendor WSO2
Product WSO2 API Manager
Versions Default: unaffected
  • unknown from 0 to 3.1.0 (excl.)
  • affected from 3.1.0 to 3.1.0.355 (excl.)
  • affected from 3.2.0 to 3.2.0.459 (excl.)
  • affected from 3.2.1 to 3.2.1.78 (excl.)
  • affected from 4.0.0 to 4.0.0.380 (excl.)
  • affected from 4.1.0 to 4.1.0.243 (excl.)
  • affected from 4.2.0 to 4.2.0.183 (excl.)
  • affected from 4.3.0 to 4.3.0.94 (excl.)
  • affected from 4.4.0 to 4.4.0.58 (excl.)
  • affected from 4.5.0 to 4.5.0.43 (excl.)
  • affected from 4.6.0 to 4.6.0.7 (excl.)
Vendor WSO2
Product WSO2 API Control Plane
Versions Default: unaffected
  • affected from 4.5.0 to 4.5.0.44 (excl.)
  • affected from 4.6.0 to 4.6.0.8 (excl.)
Vendor WSO2
Product WSO2 Traffic Manager
Versions Default: unaffected
  • affected from 4.5.0 to 4.5.0.42 (excl.)
  • affected from 4.6.0 to 4.6.0.7 (excl.)
Vendor WSO2
Product WSO2 Universal Gateway
Versions Default: unaffected
  • affected from 4.5.0 to 4.5.0.42 (excl.)
  • affected from 4.6.0 to 4.6.0.7 (excl.)
Vendor WSO2
Product WSO2 Open Banking AM
Versions Default: unaffected
  • unknown from 0 to 2.0.0 (excl.)
  • affected from 2.0.0 to 2.0.0.404 (excl.)
Vendor WSO2
Product WSO2 Identity Server as Key Manager
Versions Default: unaffected
  • unknown from 0 to 5.10.0 (excl.)
  • affected from 5.10.0 to 5.10.0.375 (excl.)
Vendor WSO2
Product WSO2 Open Banking IAM
Versions Default: unaffected
  • unknown from 0 to 2.0.0 (excl.)
  • affected from 2.0.0 to 2.0.0.424 (excl.)

Solutions

Follow the instructions given on https://security.docs.wso2.com/en/latest/security-announcements/security-advisories/2026/WSO2-2025-4343/#solution

References

Problem Types

  • CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') CWE

Impacts

  • CAPEC-242 CAPEC-242: Cross-Site Scripting