CVE-2026-55386 InvoiceShelf CVE debrief

Who should care

Defenders of systems using InvoiceShelf, particularly those with exposure to list endpoints, should assess and verify their exposure to this vulnerability. They should apply the patch, restrict user input to prevent exploitation, and monitor for suspicious database queries. This includes reviewing compensating controls for exposed systems while remediation is scheduled and verified.

Why it matters

This SQL injection vulnerability in InvoiceShelf allows authenticated users to extract database information, potentially leading to data breaches and service disruption. Defenders should verify exposure, apply the patch, and restrict user input to prevent exploitation.

• Data breach through database information extraction
• Potential disruption of service through exploitation
• Verification of patch application and user input validation
• Risk assessment for authenticated user access

Technical summary

The vulnerability exists in InvoiceShelf versions prior to 2.4.0, where the orderByField query parameter is not restricted to column identifiers, allowing authenticated users to inject malicious SQL. This could lead to data breaches and service disruption. The issue is fixed in version 2.4.0. Defenders should verify exposure and apply the patch to prevent exploitation. The vulnerability allows authenticated users to extract database information, potentially leading to data breaches and service disruption. The CVE record and source item provide details on the vulnerability, affected versions, and fixed version 2.4.0.

Defensive priority

Defenders should prioritize verifying exposure and applying the patch, as SQL injection can lead to data breaches.

Recommended defensive actions

• Verify if the system uses InvoiceShelf versions prior to 2.4.0 and apply the patch
• Restrict user input to column identifiers in ORDER BY clauses
• Monitor for suspicious database queries
• 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
• Confirm whether affected product deployments exist in managed environments and assign an owner for follow-up

Evidence notes

The CVE record and source item provide details on the vulnerability, affected versions, and fixed version 2.4.0. The vulnerability exists in InvoiceShelf versions prior to 2.4.0, where the orderByField query parameter is not restricted to column identifiers, allowing authenticated users to inject malicious SQL. The source item details and CVE Program record confirm the vulnerability and provide additional context.

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.