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Identity Server CVE-2025-1396

MEDIUM
Observable Discrepancy (CWE-203)
2025-09-26 ed10eef1-636d-4fbe-9993-6890dfa878f8
5.3
CVSS 3.1 · NVD
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Vulnerability Assessment

Weakness
CWE
OWASP Top 10:2025
A06:2021 - Vulnerable and Outdated Components
ASVS 5.0
V6 - Authentication Timing-safe comparisons
Impact

CVSS score of 3.7 (LOW). Attack characteristics: network attack vector, high complexity, no privileges required, no user interaction not required. EPSS exploitation probability: 0.03%.

Exploit ScenarioDerived

This vulnerability can be exploited remotely over the network. Successful exploitation could compromise the low-severity affected system.

This Month Plan within 30 days. Why: MEDIUM severity (CVSS 4.0-6.9).
No patch listed yet 0.0% exploitation probability (EPSS)

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AnalysisAIv1 – Mar 28, 2026

A username enumeration vulnerability exists in multiple WSO2 products when Multi-Attribute Login is enabled. Rated low severity (CVSS 3.7), this vulnerability is remotely exploitable, no authentication required. No vendor patch available.

RemediationAI

No vendor patch is available at time of analysis. Monitor vendor advisories for updates. Apply vendor patches when available. Implement network segmentation and monitoring as interim mitigations.

Affected Packages

maven org.wso2.carbon.identity.framework:org.wso2.carbon.identity.input.validation.mgt no fix

Source: OSV (Open Source Vulnerabilities)

Affects your stack

Affects 1 package in maven

Checking this CVE against your own stacks and servers is part of the Basic plan and up.

Technical ContextAI · show details

This vulnerability is classified under CWE-203. A username enumeration vulnerability exists in multiple WSO2 products when Multi-Attribute Login is enabled. In this configuration, the system returns a distinct "User does not exist" error message to the login form, regardless of the validate_username setting. This behavior allows malicious actors to determine which usernames exist in the system based on observable discrepancies in the application's responses. Exploitation of this vulnerability could aid in brute-force attacks, targeted phishing campaigns, or other social engineering techniques by confirming the validity of user identifiers within the system. Affected products include: Wso2 Identity Server, Wso2 Identity Server As Key Manager, Wso2 Open Banking Iam.

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  • Exploit and PoC references, threat intelligence from 22 sources

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Severity by source

NVD PRIMARY 5.3 MEDIUM
AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
Low
Integrity
None
Availability
None

Lifecycle Timeline

3
Severity Changed
Oct 18, 2026 - 21:38 NVD
LOW MEDIUM
CVSS changed
Oct 18, 2026 - 21:38 NVD
3.7 (LOW) 5.3 (MEDIUM)
CVE Published
Sep 26, 2025 - 08:15 nvd
LOW 3.7

DescriptionNVD

A username enumeration vulnerability exists in multiple WSO2 products when Multi-Attribute Login is enabled. In this configuration, the system returns a distinct "User does not exist" error message to the login form, regardless of the validate_username setting. This behavior allows malicious actors to determine which usernames exist in the system based on observable discrepancies in the application's responses.

Exploitation of this vulnerability could aid in brute-force attacks, targeted phishing campaigns, or other social engineering techniques by confirming the validity of user identifiers within the system.

Executive ViewAI

Why It Matters

CVE-2025-1396 is a low-severity vulnerability (CVSS 3.7). The limited severity suggests constrained impact, typically requiring specific conditions or local access for exploitation. Apply vendor updates when available as part of routine maintenance.

Business Impact: Low
Compensating Controls

Apply vendor patch during routine maintenance. Standard security controls provide adequate interim protection.

Threat Intelligence Overview

EPSS Score
0.0%
Top 92% exploitable
Data Quality
3 sources
Confidence: Low

How this decision was reached

The engine reads each signal below and applies a fixed list of rules from top to bottom. The first rule that matches sets the recommended action – like a statement, every line is shown.

SignalValue
Severity MEDIUM
CISA KEV No
Public POC No
EPSS 0.0%
Patch available No
Active threat No
Deciding rule
MEDIUM severity (CVSS 4.0-6.9)
What every action level means
Emergency Immediate action required. Criteria: CRITICAL + in CISA KEV (actively exploited) without patch, OR CRITICAL + EPSS > 30% without patch, OR CRITICAL + active threat signals without patch.
Act Now Prioritize within 24-48h. Criteria: in KEV with patch available, OR CRITICAL + public POC, OR HIGH + EPSS > 10%, OR CRITICAL + active threat, OR any CRITICAL severity.
This Week Schedule remediation this week. Criteria: HIGH severity (CVSS 7.0-8.9). Patch within normal change window.
This Month Plan within 30 days. Criteria: MEDIUM severity (CVSS 4.0-6.9), lower exploitation probability. Include in regular patch cycle.
Monitor Track and reassess. Criteria: LOW severity (CVSS 0.1-3.9), minimal exploitation risk. No immediate action needed.

SSVC AssessmentENISA

SSVC Decision· derived
Defer
Exploitation· derived
None
System Exposure· derived
Open
Automatable· derived
Yes
Human Impact
Low

Priority Score

26
Low Medium High Critical
KEV: 0
EPSS: 0
CVSS: +26
PoC: 0
Weaponized: 0
Threat intel: 0
Gov advisory: 0

Attack Technique

Information disclosure occurs when an application unintentionally exposes sensitive data that aids attackers in reconnaissance or directly compromises security.

Affected Products (CPE)NVD

cpe:2.3:a:wso2:identity_server:5.10.0:*:*:*:*:*:*:*
cpe:2.3:a:wso2:identity_server:5.11.0:*:*:*:*:*:*:*
cpe:2.3:a:wso2:identity_server:6.0.0:*:*:*:*:*:*:*
cpe:2.3:a:wso2:identity_server:6.1.0:*:*:*:*:*:*:*
cpe:2.3:a:wso2:identity_server_as_key_manager:5.10.0:*:*:*:*:*:*:*
cpe:2.3:a:wso2:open_banking_iam:2.0.0:*:*:*:*:*:*:*
CVE-2022-29464 CRITICAL POC
9.8 Apr 18

Certain WSO2 products allow unrestricted file upload with resultant remote code execution. Rated critical severity (CVSS

CVE-2024-7097 MEDIUM POC
4.3 May 30

An incorrect authorization vulnerability exists in multiple WSO2 products due to a flaw in the SOAP admin service, which

CVE-2016-4311 HIGH POC
8.8 Feb 17

Cross-site request forgery (CSRF) vulnerability in the XACML flow feature in WSO2 Identity Server 5.1.0 allows remote at

CVE-2016-4312 HIGH POC
7.5 Feb 17

XML external entity (XXE) vulnerability in the XACML flow feature in WSO2 Identity Server 5.1.0 before WSO2-CARBON-PATCH

CVE-2022-29548 MEDIUM POC
6.1 Apr 21

A reflected XSS issue exists in the Management Console of several WSO2 products. Rated medium severity (CVSS 6.1), this

CVE-2020-14446 MEDIUM POC
6.1 Jun 18

An issue was discovered in WSO2 Identity Server through 5.10.0 and WSO2 IS as Key Manager through 5.10.0. Rated medium s

CVE-2017-14651 MEDIUM POC
4.8 Sep 21

WSO2 Data Analytics Server 3.1.0 has XSS in carbon/resources/add_collection_ajaxprocessor.jsp via the collectionName or

CVE-2020-14445 MEDIUM POC
5.4 Jun 18

An issue was discovered in WSO2 Identity Server through 5.9.0 and WSO2 IS as Key Manager through 5.9.0. Rated medium sev

CVE-2020-14444 MEDIUM POC
5.4 Jun 18

An issue was discovered in WSO2 Identity Server through 5.9.0 and WSO2 IS as Key Manager through 5.9.0. Rated medium sev

CVE-2018-8716 MEDIUM POC
5.4 Apr 25

WSO2 Identity Server before 5.5.0 has XSS via the dashboard, allowing attacks by low-privileged attackers. Rated medium

CVE-2020-24705 HIGH
8.8 Aug 27

An issue was discovered in certain WSO2 products. Rated high severity (CVSS 8.8), this vulnerability is remotely exploit

CVE-2020-24703 HIGH
8.8 Aug 27

An issue was discovered in certain WSO2 products. Rated high severity (CVSS 8.8), this vulnerability is remotely exploit

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