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Back to active CVEs
Critical · CVSS 9.8CVE-2026-4052

Privilege Escalation via Token Endpoint in WSO2 API Manager (APIM 4.x/IS as Resident Key Manager)CVE-2026-4052

Answer in brief

CVE-2026-4052 records a Critical severity (CVSS 9.8) vulnerability in Privilege Escalation via Token Endpoint in WSO2 API Manager (APIM 4.x/IS as Resident Key Manager). The current sources do not mark it as known exploited. The current feed maps WSO2/WSO2 API Control Plane (generic), WSO2/WSO2 API Manager (generic), WSO2/WSO2 Identity Server Key Manager Connector (apim-km-wso2is) (generic). Check affected ranges and fixed versions before updating.

Analysis pending evidence review

HOL Guard separates source facts from reviewed analysis. See the methodology.

Published Nov 3, 2026Updated Nov 3, 2026Source checked Nov 3, 2026First seen by HOL Nov 3, 2026Material review Nov 3, 2026
Upstream Advisory

Key facts

Risk
Critical · CVSS 9.8
Exploitation
Not marked as known exploited
Affected software
3 mapped packages or products
Fix availability
Available

Why this deserves its current priority

CVSS is 9.8. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.

Analysis status

Analysis pending evidence review

Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.

Affected scope and exposure questions

The current feed maps WSO2/WSO2 API Control Plane (generic), WSO2/WSO2 API Manager (generic), WSO2/WSO2 Identity Server Key Manager Connector (apim-km-wso2is) (generic). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
PackageAffected rangeFixed version
WSO2/WSO2 API Control Planegeneric4.5.0 || 4.6.0Not reported
WSO2/WSO2 API Managergeneric4.1.0 || 4.2.0 || 4.3.0 || 4.4.0 || 4.5.0 || 4.6.0Not reported
WSO2/WSO2 Identity Server Key Manager Connector (apim-km-wso2is)generic>=0 <1.8.81.8.8

Recommended response

  1. 1Check inventory. Check lockfiles and deployed manifests for WSO2/WSO2 API Control Plane, WSO2/WSO2 API Manager, WSO2/WSO2 Identity Server Key Manager Connector (apim-km-wso2is).
  2. 2Review the reported fix. Source-reported solution: Follow the instructions given on https://security.docs.wso2.com/en/latest/security-announcements/security-advisories/2026/WSO2-2026-5212/#solution

Evidence timeline and material changes

  1. Published upstream

    Nov 3, 2026

    Evidence: source:cvelist:source_dates:source-dates:record

  2. Source modified

    Nov 3, 2026

    Evidence: source:cvelist:source_dates:source-dates:record

  3. First seen by HOL

    Nov 3, 2026

Sources and claim methodology

  • Source referencesecurity.docs.wso2.com
Upstream source description

This issue only impacts deployments where WSO2 Identity Server is configured as a Resident Key Manager with database sharing. In such environments, a self-registered user may gain access to the System REST APIs of WSO2 API Manager by obtaining a token from the WSO2 Identity Server token endpoint.

Quoted source text, attributed separately from HOL analysis.

Related CVEs

  • Improper IDP Status Validation via JWT Bearer or SAML2 Bearer Grants in Multiple WSO2 Products Allows Access Token Issuance for Disabled Identity ProvidersSame wso2/wso2 api control plane package
  • Reflected Cross-Site Scripting via Authentication Endpoint in Multiple WSO2 Products Allows Browser Redirection and UI ModificationSame wso2/wso2 api control plane package
  • DT Directory Lite Addon <= 1.1 - Unauthenticated Plugin Settings UpdateAlso CWE-862
  • AZEXO Store Locator <= 1.4 - Subscriber+ Arbitrary Post Deletion via azt_delete_itemAlso CWE-862
  • User-mode module can post forged callback requests to another module's callback queue, running its code with that module's privilegeAlso CWE-862
  • WP Compress <= 7.22.01 - Missing Authorization to Unauthenticated Account Linking / Site Takeover via 'force_ic_connect' and 'apikey' ParametersAlso CWE-862

Record context

Vulnerability class
Missing Auth
EPSS
Not reported
CWE IDs
CWE-862
Source
CVE List V5
Source checked
Nov 3, 2026
References
1 linked source
Open source record