CVE-2026-10860: MISP CRUDComponent delete validation bypass via operator precedence error
A logic error in the MISP CRUD component delete handler allowed validation failures to be bypassed when requests used the HTTP DELETE method. Due to missing parentheses in the delete condition, the expression was evaluated as ($validationError === null && POST) || DELETE, meaning a DELETE request could proceed even when the delete validation callback had rejected the operation. An authenticated attacker with access to an affected delete endpoint could abuse this flaw to delete records that should have been protected by application-level validation or authorization checks.
Affected Software
Remediation
Recommended actions to resolve this vulnerability, in priority order.
- Configuration
Modify the delete handler code so the delete validation callback is enforced for DELETE requests. Correct the operator precedence in the delete condition (e.g., add parentheses or restructure the conditional) so that the validation result is required before allowing a DELETE to proceed.
MISP CRUD component (delete handler) delete validation operator precedence / conditional = ensure validation callback result is applied to DELETE requests (add parentheses or otherwise correct the conditional) - Compensating control
Until the code fix is deployed, restrict access to affected delete endpoints (for example with firewall rules, ACLs, or network segmentation) to only trusted IPs or internal management networks and require strong authentication/authorization for delete operations.
- Operational
Audit recent delete requests and application logs for unauthorized or unexpected deletions, restore any improperly deleted records from backups if needed, and review authorization/validation callback configurations for other CRUD handlers.
Event History
Frequently Asked Questions
What is the severity of CVE-2026-10860?
The severity of CVE-2026-10860 is rated high with a CVSS score of 7.9.
What type of vulnerability is CVE-2026-10860?
CVE-2026-10860 is a logic error vulnerability in the MISP CRUD component that allows validation bypass.
How do I fix CVE-2026-10860?
To fix CVE-2026-10860, update the MISP software to the latest version where the logic error in the delete handler is corrected.
What are the potential impacts of CVE-2026-10860?
The potential impacts of CVE-2026-10860 include unauthorized deletions of resources due to bypassing validation checks.
When was CVE-2026-10860 published?
CVE-2026-10860 was published on June 4, 2026.