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CVE record · CVE-2025-13591

Username Enumeration via Authentication Endpoint in WSO2 Identity Server Allows User Account Discovery

CVSS 5.3 MediumEPSS 0.0030 · 22nd percentile

Published by the CVE Program (CNA: WSO2) at 19 Oct 2026, 16:45 UTC. agentprime has not analysed this yet, so whether it affects any app is not known. This CVE names a vendor and product rather than a package, so the lockfile check doesn’t match it.

Affected products, as the CNA wrote them
VendorProductVersions
WSO2 WSO2 Identity Server
  • unknown before 7.0.0 custom
  • affected 7.0.0 to before 7.0.0.134 custom
  • affected 7.1.0 to before 7.1.0.42 custom
Other versions: unaffected
WSO2 WSO2 Carbon Abstract OTP Authenticator Package name: org.wso2.carbon.identity.auth.otp.commons:org.wso2.carbon.identity.auth.otp.core
  • affected 1.0.5 to before 1.0.5.3 custom
  • affected 1.0.10 to before 1.0.10.2 custom
Other versions: unknown
WSO2 Email OTP Authenticator Package name: org.wso2.carbon.identity.local.auth.emailotp:org.wso2.carbon.identity.local.auth.emailotp
  • affected 1.0.18 to before 1.0.18.8 custom
  • affected 1.0.30 to before 1.0.30.5 custom
Other versions: unknown
Identifiers
CVE-2025-13591
CNA
WSO2
Weakness (CWE)
CWE-203
Tags
Published
19 Oct 2026
Updated
20 Oct 2026

Not analysed yet

We haven’t published our own analysis of this CVE. If a person reviews it, this page will say what’s affected and what has to be true for it to matter.

Severity and exploitation

ScoreRatingCVSSVectorSource
5.3 Medium 3.1 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N CNA (WSO2)
  • CISA KEV Not listed.
  • EPSS 0.0030, the 22nd percentile, on 5 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

Timeline

  1. 19 Oct 2026, 17:16 UTC Confirmed by NVD

Sources

References from the CNA

Facts on this page come from the CVE List as the CNA published them, with CVSS from the sources named above, CISA KEV and FIRST EPSS. Vendors, products and versions are shown as the CNA wrote them. We don’t reproduce the CVE’s description.