The authentication endpoint of WSO2 Identity Server fails to provide a consistent system response...
Summary
Vulnerability reported (CVE-2025-13591). Risk of unauthorized operations or information disclosure.
Auto-generated summary
Assembled by SecPulse from the source data (CVSS, CWE, affected versions) using templates — no AI involved. Check the original description and references below for exact details.
A vulnerability tracked as CVE-2025-13591 has been found.
Risk of unauthorized operations or information disclosure. CVSS score: 5.3/10.
What to do: apply the vendor's official patched release.
If unsure, ask your IT team or search "CVE-2025-13591" on the vendor's site.
CVE-2025-13591 — CWE-203 / CVSS v3 5.3
Attack vector: remote (network-reachable) / unauthenticated / no user interaction
Plan: 1) Audit SBOM/dependencies, 2) Stage→prod upgrade, 3) Add WAF/proxy monitoring on affected endpoints, 4) Hunt IOCs in logs.
Refs: see the GHSA / vendor advisory / patched release linked on this page.
A vulnerability (CWE-203) has been reported.
Check the vendor advisory for the affected versions.
Severity: Medium (CVSS 5.3/10). Risk of unauthorized operations or information disclosure.
Update to the patched release per vendor advisory.
Until the patch is applied: disable the affected feature, apply WAF rules, or restrict access via network ACLs.
Search webserver/proxy logs for unusual request patterns matching this CVE's known IOCs. Audit SBOM/dependencies to find affected services.
Response actions
Concrete steps and command examples for SOC/SRE teams to execute in order
-
1
Identify exposureidentify
Audit SBOM/dependencies for affected components.資産台帳・SBOM・依存マニフェストで影響コンポーネントを特定する。
-
2
Post-deployment verificationverify
Confirm patched version is live in productionパッチ適用後、ステージングで PoC または同等の悪用パターンを再現して脆弱性が閉じたことを確認。本番ではアクセスログ・WAF でアラート再発が無いか継続監視。
Affected packages
| Ecosystem | Package | Affected | Fixed |
|---|---|---|---|
| WSO2 | WSO2 Identity Server |
≥ 7.0.0, < 7.0.0.134 ≥ 7.1.0, < 7.1.0.42 |
7.0.0.134 7.1.0.42 |
| WSO2 | WSO2 Carbon Abstract OTP Authenticator |
≥ 1.0.5, < 1.0.5.3 ≥ 1.0.10, < 1.0.10.2 |
1.0.5.3 1.0.10.2 |
| WSO2 | Email OTP Authenticator |
≥ 1.0.18, < 1.0.18.8 ≥ 1.0.30, < 1.0.30.5 |
1.0.18.8 1.0.30.5 |
Original description The description as published by the source.
The authentication endpoint of WSO2 Identity Server fails to provide a consistent system response when a username does not exist in the system, allowing attackers to differentiate between valid and invalid usernames. This difference in responses can be leveraged to enumerate existing user accounts.
Successful exploitation enables an attacker to discover valid usernames within the system, significantly increasing the risk of subsequent attacks such as brute force attacks on user credentials, social engineering attacks, and information leakage. The discovered usernames can be used to craft targeted phishing emails or other social engineering campaigns.
Source: NIST National Vulnerability Database NVD GitHub Advisory
References
- web security.docs.wso2.com
- web nvd.nist.gov
- web security.docs.wso2.com
- web github.com