CVE-2026-107266 Drupal CVE debrief

Who should care

Drupal site administrators and security teams should assess exposure and prioritize patching or mitigation, especially if they use the Views Share module and have resource-intensive views.

Why it matters

Defenders should care about CVE-2026-107266 because it affects the Drupal Views Share module, potentially leading to performance issues or unauthorized access to view displays. Site administrators and security teams should assess exposure, especially if they use resource-intensive views. The vulnerability requires patching or mitigation to prevent potential performance degradation or unauthorized access.

• Potential performance degradation due to resource-intensive views execution
• Increased risk of unauthorized view display access
• Need for verification of view and display ID access controls
• Possible impact on site responsiveness or resource utilization

Technical summary

The Drupal Views Share module enables sharing view displays via iframes but doesn't sufficiently block access to them. This could allow resource-intensive views to be executed, potentially affecting site performance. The vulnerability is mitigated by the requirement that an attacker must know the view and display IDs. The module's insufficient access blocking could lead to performance issues if exploited, and defenders should assess exposure and prioritize patching or mitigation, especially if they use resource-intensive views.

Defensive priority

Defenders should prioritize patching or mitigating this vulnerability, especially if they use the Views Share module and have resource-intensive views.

Recommended defensive actions

• Patch the Views Share module to version 2.0.1 or later
• Restrict access to view displays to authorized users only
• Monitor site performance for unusual resource usage patterns
• Consider implementing additional security measures for resource-intensive views
• Review compensating controls for exposed systems while remediation is scheduled and verified
• Check relevant monitoring, detection, and logs for exposed assets that need extra review
• Track exceptions, retest remediated assets, and close the item only after evidence is documented

Evidence notes

The vulnerability is confirmed by the Drupal security team and the CVE Program. The Views Share module's insufficient access blocking could lead to performance issues if exploited. The CVE record was published on 2026-10-07T16:29:40.000Z and has not been modified since then. The vulnerability affects the Drupal Views Share module, enabling sharing view displays via iframes but not sufficiently blocking access to them. This could allow resource-intensive views to be executed, potentially affecting site performance.

Sources and references

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.