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CVE-2026-63339

Severity:

HIGH RISK

(8.8)

Privilege Escalation (CWE-269) in IXP Manager Web App

CVE-2026-63339

Deferred

Vulnerability type

Category:

Privilege Escalation

CWE:

CWE-20, CWE-269

Impact:

Unauthorized administrative access

Severity:

HIGH RISK

(8.8)

CVSS version:

3.1

Catch this CVE while code is being written

Detect vulnerable code directly in pull requests, so CVEs are fixed before merge.

Summary

IXP Manager contains an authorization flaw that allows an authenticated, non-administrative user to obtain administrator-level privileges. The issue is risky when user-controlled requests are not consistently checked against the caller's assigned role before administrative actions are permitted.

IXP Manager contains an authorization flaw that allows an authenticated, non-administrative user to obtain administrator-level privileges. The issue is risky when user-controlled requests are not consistently checked against the caller's assigned role before administrative actions are permitted.

Affected context

The vulnerability affects IXP Manager deployments where authenticated users can reach functionality that changes account privileges or invokes administrative operations without sufficiently enforcing role boundaries. Administrative-function restrictions may reduce exposure, but they do not fully address the underlying authorization weakness.

The vulnerability affects IXP Manager deployments where authenticated users can reach functionality that changes account privileges or invokes administrative operations without sufficiently enforcing role boundaries. Administrative-function restrictions may reduce exposure, but they do not fully address the underlying authorization weakness.

Exploit preconditions

  • Attack surface: IXP Manager web application
  • Required access: A valid authenticated account with non-administrative privileges
  • Trigger point: A privilege or administrative action handled by the application
  • Why exploitation is possible: Authorization checks may fail to reliably validate the user's role and permitted operation, allowing a lower-privileged account to obtain or exercise administrator capabilities
  • Attack surface: IXP Manager web application
  • Required access: A valid authenticated account with non-administrative privileges
  • Trigger point: A privilege or administrative action handled by the application
  • Why exploitation is possible: Authorization checks may fail to reliably validate the user's role and permitted operation, allowing a lower-privileged account to obtain or exercise administrator capabilities

Why this happens

The underlying issue is improper privilege management, mapped primarily to CWE-269. The application does not consistently enforce least privilege or verify that the authenticated principal is authorized for sensitive role-management and administrative operations. Related input-handling weaknesses may also contribute where request data is accepted without adequate validation, corresponding to CWE-20.

The underlying issue is improper privilege management, mapped primarily to CWE-269. The application does not consistently enforce least privilege or verify that the authenticated principal is authorized for sensitive role-management and administrative operations. Related input-handling weaknesses may also contribute where request data is accepted without adequate validation, corresponding to CWE-20.

Potential impact

  • An attacker may gain administrator-level access
  • Unauthorized users could modify exchange, user, or application settings
  • Sensitive operational data could be viewed or altered
  • Administrative access could enable further account compromise or service disruption
  • Configuration changes could affect the availability and integrity of the platform
  • An attacker may gain administrator-level access
  • Unauthorized users could modify exchange, user, or application settings
  • Sensitive operational data could be viewed or altered
  • Administrative access could enable further account compromise or service disruption
  • Configuration changes could affect the availability and integrity of the platform

General mitigation guidance

Mitigation generally focuses on centralized, server-side authorization and strict separation of administrative capabilities.

Common defensive patterns include:

  • Enforcing role and permission checks for every sensitive operation
  • Applying deny-by-default authorization policies
  • Separating privilege assignment from ordinary user-controlled workflows
  • Validating and canonicalizing role-related input before processing
  • Requiring deliberate, independently authorized actions for administrator changes
  • Limiting administrative service accounts and session privileges
  • Logging and alerting on privilege changes and unusual administrative activity

These controls reduce reliance on interface-level restrictions and help preserve least privilege.

Mitigation generally focuses on centralized, server-side authorization and strict separation of administrative capabilities.

Common defensive patterns include:

  • Enforcing role and permission checks for every sensitive operation
  • Applying deny-by-default authorization policies
  • Separating privilege assignment from ordinary user-controlled workflows
  • Validating and canonicalizing role-related input before processing
  • Requiring deliberate, independently authorized actions for administrator changes
  • Limiting administrative service accounts and session privileges
  • Logging and alerting on privilege changes and unusual administrative activity

These controls reduce reliance on interface-level restrictions and help preserve least privilege.

How teams detect issues like this

Organizations can look for privilege-escalation conditions through:

  • Static analysis of authorization middleware, role checks, and access-control decorators
  • Code review of endpoints that modify roles, permissions, or administrative state
  • Tests that exercise every sensitive route with accounts from each supported role
  • Detection of client-side-only restrictions without corresponding server-side enforcement
  • Policy checks requiring centralized authorization for privileged operations
  • Monitoring for unexpected changes to roles, permissions, and administrator accounts

Automated security review tools may help identify missing authorization checks, but application-specific permission tests remain important.

Organizations can look for privilege-escalation conditions through:

  • Static analysis of authorization middleware, role checks, and access-control decorators
  • Code review of endpoints that modify roles, permissions, or administrative state
  • Tests that exercise every sensitive route with accounts from each supported role
  • Detection of client-side-only restrictions without corresponding server-side enforcement
  • Policy checks requiring centralized authorization for privileged operations
  • Monitoring for unexpected changes to roles, permissions, and administrator accounts

Automated security review tools may help identify missing authorization checks, but application-specific permission tests remain important.

Sources

SourceLink
github.comgithub.com/inex/IXP-Manager/releases/tag/v7.3.0
github.comgithub.com/inex/IXP-Manager/security/advisories/GHSA-f5xv-q6fj-hfrc

Frequently asked

questions

An attacker generally needs a valid authenticated, non-administrative account. Unauthenticated access is not indicated by the provided description.

No. Limiting exposure can reduce risk, but protection depends on enforcing authorization checks on the server for every privileged operation.

Use centralized, server-side, deny-by-default authorization checks that verify the user's role and permission for each sensitive action.

Combine least-privilege design, strict input validation, role-based access-control testing, code review of privilege boundaries, and monitoring for unexpected privilege changes.

An attacker generally needs a valid authenticated, non-administrative account. Unauthenticated access is not indicated by the provided description.

No. Limiting exposure can reduce risk, but protection depends on enforcing authorization checks on the server for every privileged operation.

Use centralized, server-side, deny-by-default authorization checks that verify the user's role and permission for each sensitive action.

Combine least-privilege design, strict input validation, role-based access-control testing, code review of privilege boundaries, and monitoring for unexpected privilege changes.

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