Read the docs
TI-2019-14669 Aliases CVE-2019-20437GHSA-pf48-fgcx-8ph4

An issue was discovered in WSO2 API Manager 2.6.0, WSO2 IS as Key Manager 5.7.0, and WSO2…

Priority LOW 30CWE-79Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
Required
Attack complexity
Low
Impact type
Cross-site scripting
Confidentiality · integrity · availability
Low · Low · None
Fix status
No fix listed

Attack profile from CVSS 3.1 · NVD. Fix status from CNA. Impact type from CWE-79.

Summary

An issue was discovered in WSO2 API Manager 2.6.0, WSO2 IS as Key Manager 5.7.0, and WSO2 Identity Server 5.8.0. When a custom claim dialect with an XSS payload is configured in the identity provider basic claim configuration, that payload gets executed, if a user picks up that dialect's URI as the provisioning claim in the advanced claim configuration of the same Identity Provider. The attacker also needs to have privileges to log in to the management console, and to add and update identity provider configurations.

Why it matters now

EPSS 0.01278 70th percentileScored 2026-11-07
Public exploit Yes 2 exploit referencesTagged by NVD
Fix No fix listed No fixed version in the sources yet

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

VendorProductAffected versionsFixed inStatusSource
——all versions—No fix listedCNA
  • — Vendor— Affected all versions Fixed in — No fix listed CNA

CPE configurations NVD · 3

CPEVersionsRoleVendor
cpe:2.3:a:wso2:api_manager:2.6.0:*:*:*:*:*:*:*2.6.0VulnerableWSO2
cpe:2.3:a:wso2:identity_server:5.7.0:*:*:*:*:*:*:*5.7.0VulnerableWSO2
cpe:2.3:a:wso2:identity_server:5.8.0:*:*:*:*:*:*:*5.8.0VulnerableWSO2
  • cpe:2.3:a:wso2:api_manager:2.6.0:*:*:*:*:*:*:* Versions 2.6.0 Vulnerable ·WSO2
  • cpe:2.3:a:wso2:identity_server:5.7.0:*:*:*:*:*:*:* Versions 5.7.0 Vulnerable ·WSO2
  • cpe:2.3:a:wso2:identity_server:5.8.0:*:*:*:*:*:*:* Versions 5.8.0 Vulnerable ·WSO2

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2019-20437
  2. 2026-10-03 Alias added: GHSA-pf48-fgcx-8ph4

References

Exploit 2

Advisory 1

  • TI-2026-04755 Authentication Bypass via JWT Algorithm Mismatch in Multiple WSO2 Products Allows Account Takeover KEVCVSS 3.1CRITICAL 10.0
  • TI-2022-11928 Certain WSO2 products allow unrestricted file upload with resultant remote code execution. KEVCVSS 3.1CRITICAL 9.8
  • TI-2020-15069 The Management Console in WSO2 API Manager through 3.1.0 and API Microgateway 2.2.0… CVSS 3.1CRITICAL 9.1
  • TI-2023-15163 A reflected cross-site scripting (XSS) vulnerability in /authenticationendpoint/login.do… CVSS 3.1MEDIUM 6.1
  • TI-2022-12002 A reflected XSS issue exists in the Management Console of several WSO2 products. CVSS 3.1MEDIUM 6.1
  • TI-2025-13722 Account Takeover via Conditional Authentication Script Logic in Multiple WSO2 Products CVSS 3.1CRITICAL 9.4
See all 94 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences