Summary
XXL-JOB contains a cross-site request forgery vulnerability in user management endpoints that lack CSRF protection and do not restrict the HTTP method used. If an authenticated administrator visits a malicious page, an attacker may cause the browser to submit unauthorized user creation, modification, or deletion requests.
XXL-JOB contains a cross-site request forgery vulnerability in user management endpoints that lack CSRF protection and do not restrict the HTTP method used. If an authenticated administrator visits a malicious page, an attacker may cause the browser to submit unauthorized user creation, modification, or deletion requests.
Affected context
The issue occurs in XXL-JOB deployments where the user management controller exposes the /user/insert, /user/update, and /user/delete endpoints without effective CSRF defenses. Risk is higher when these endpoints rely on browser-managed authentication credentials and are reachable by users with administrative permissions.
The issue occurs in XXL-JOB deployments where the user management controller exposes the /user/insert, /user/update, and /user/delete endpoints without effective CSRF defenses. Risk is higher when these endpoints rely on browser-managed authentication credentials and are reachable by users with administrative permissions.
Exploit preconditions
- Attack surface: Web-based XXL-JOB user management endpoints
- Required access: A victim must be authenticated to the affected administration interface; the attacker generally does not need direct administrative credentials
- Trigger point: A victim's browser submits a request to a user insertion, update, or deletion endpoint
- Why exploitation is possible: The endpoints lack request-origin validation or CSRF tokens, and insufficient HTTP method restrictions may allow unintended request forms to reach state-changing operations
- Attack surface: Web-based XXL-JOB user management endpoints
- Required access: A victim must be authenticated to the affected administration interface; the attacker generally does not need direct administrative credentials
- Trigger point: A victim's browser submits a request to a user insertion, update, or deletion endpoint
- Why exploitation is possible: The endpoints lack request-origin validation or CSRF tokens, and insufficient HTTP method restrictions may allow unintended request forms to reach state-changing operations
Why this happens
The vulnerability results from treating browser-authenticated state-changing requests as trustworthy without requiring proof that they originated from the legitimate application. Missing CSRF tokens, absent origin checks, and permissive HTTP method handling allow a third-party site to induce requests using the victim's existing session. This behavior maps to CWE-352: Cross-Site Request Forgery.
The vulnerability results from treating browser-authenticated state-changing requests as trustworthy without requiring proof that they originated from the legitimate application. Missing CSRF tokens, absent origin checks, and permissive HTTP method handling allow a third-party site to induce requests using the victim's existing session. This behavior maps to CWE-352: Cross-Site Request Forgery.
Potential impact
- An attacker may create unauthorized XXL-JOB users
- Existing user accounts or permissions could be modified
- Administrative users could be deleted or disrupted
- Access-control changes could enable further unauthorized activity
- Administrative workflows and job-management operations may be affected
- An attacker may create unauthorized XXL-JOB users
- Existing user accounts or permissions could be modified
- Administrative users could be deleted or disrupted
- Access-control changes could enable further unauthorized activity
- Administrative workflows and job-management operations may be affected
General mitigation guidance
Mitigation generally focuses on protecting every state-changing browser request and reducing reliance on ambient authentication credentials.
Common defensive patterns include:
- Requiring unpredictable, session-bound CSRF tokens for state-changing requests
- Validating trusted
OriginorRefererheaders as an additional control where appropriate - Restricting state-changing operations to intended HTTP methods, typically POST, PUT, PATCH, or DELETE
- Rejecting unexpected content types and enforcing strict request schemas
- Using secure, appropriately scoped cookie settings such as SameSite protections
- Applying least privilege to administrative accounts and separating high-risk operations
- Avoiding state changes through GET requests and maintaining consistent authorization checks
Mitigation generally focuses on protecting every state-changing browser request and reducing reliance on ambient authentication credentials.
Common defensive patterns include:
- Requiring unpredictable, session-bound CSRF tokens for state-changing requests
- Validating trusted
OriginorRefererheaders as an additional control where appropriate - Restricting state-changing operations to intended HTTP methods, typically POST, PUT, PATCH, or DELETE
- Rejecting unexpected content types and enforcing strict request schemas
- Using secure, appropriately scoped cookie settings such as SameSite protections
- Applying least privilege to administrative accounts and separating high-risk operations
- Avoiding state changes through GET requests and maintaining consistent authorization checks
How teams detect issues like this
Organizations can identify similar issues through:
- Static analysis for controller methods that mutate state without CSRF middleware or token validation
- Code review checks for user-management endpoints accepting multiple or unintended HTTP methods
- Testing that cross-origin requests fail without a valid CSRF token
- Runtime monitoring for unusual user creation, permission changes, or deletion requests
- Policy enforcement requiring CSRF protection on browser-session-based state-changing routes
- Automated application security testing that evaluates origin handling and method restrictions
Organizations can identify similar issues through:
- Static analysis for controller methods that mutate state without CSRF middleware or token validation
- Code review checks for user-management endpoints accepting multiple or unintended HTTP methods
- Testing that cross-origin requests fail without a valid CSRF token
- Runtime monitoring for unusual user creation, permission changes, or deletion requests
- Policy enforcement requiring CSRF protection on browser-session-based state-changing routes
- Automated application security testing that evaluates origin handling and method restrictions
Sources
| Source | Link |
|---|---|
| github. | github.com/ |
| github. | github.com/ |
