Password Brute Force via Password History Validation in Multiple WSO2 Products Allows User Account Discovery

Summary

The RemoteUserStoreManagerService does not sufficiently validate password change attempts when the password history validation feature is enabled. This oversight allows an attacker to repeatedly attempt password guesses for a user account without being adequately restricted. Exploiting this vulnerability enables an attacker to discover a user's password through brute force, leading to account impersonation. The success rate of such an attack is influenced by the complexity of the targeted user's password, with simpler passwords increasing the likelihood of compromise.

Timeline

1. Oct 20, 2026, 7:46 AM UTCCVE published
2. Oct 20, 2026, 7:17 PM UTCCISA SSVC assessment

   Exploitation: none · Automatable: no · Technical impact: partial

3. Oct 20, 2026, 7:17 PM UTCRecord last updated
4. Oct 22, 2026, 9:34 PM UTCFirst seen by cve.now

Affected versions

• WSO2 WSO2 Enterprise Integrator

  From 6.6.0 · fixed in 6.6.0.204

• WSO2 WSO2 Identity Server

  From 5.10.0 · fixed in 5.10.0.286; From 5.11.0 · fixed in 5.11.0.344; From 6.0.0 · fixed in 6.0.0.188; From 6.1.0 · fixed in 6.1.0.150; From 7.0.0 · fixed in 7.0.0.35

• WSO2 WSO2 API Manager

  From 3.1.0 · fixed in 3.1.0.268; From 3.2.0 · fixed in 3.2.0.354

• WSO2 WSO2 Open Banking AM

  From 2.0.0 · fixed in 2.0.0.315

• WSO2 WSO2 Identity Server as Key Manager

  From 5.10.0 · fixed in 5.10.0.283

• WSO2 WSO2 Open Banking IAM

  From 2.0.0 · fixed in 2.0.0.335

• org.wso2.carbon:org.wso2.carbon.user.core

  From 4.5.0 · fixed in 4.5.0.4; From 4.5.3 · fixed in 4.5.3.34; From 4.6.0 · fixed in 4.6.0.137; From 4.6.1 · fixed in 4.6.1.111; From 4.7.1 · fixed in 4.7.1.51; From 4.9.0 · fixed in 4.9.0.54; From 4.10.9 · fixed in 4.10.9.20

References 1