CVE-2026-88027 MongoDB CVE debrief

Who should care

Defenders responsible for Laravel MongoDB integrations, especially those with high-integrity data, should assess exposure and prioritize remediation. This includes reviewing and restricting user permissions, verifying the version of Laravel MongoDB in use, and implementing input validation and sanitization for embedded record identifiers.

Why it matters

CVE-2026-88027 is a high-severity vulnerability in the MongoDB integration for Laravel that could allow authenticated users to manipulate embedded documents, potentially leading to data loss or corruption. Defenders should prioritize verifying and remediating this vulnerability, especially in systems with high-integrity data.

• Potential data loss or corruption due to unauthorized modification of embedded documents.
• Possible disruption of critical business operations relying on Laravel MongoDB integrations.
• Need for verification of Laravel MongoDB version and implementation to determine exposure.
• Potential for lateral movement or escalation of privileges if exploited in conjunction with other vulnerabilities.

Technical summary

The vulnerability exists in the MongoDB integration for Laravel, specifically in the embedded-document relation handling. An authenticated user who can influence the embedded record identifier may delete all embedded documents in a targeted record or overwrite an embedded document other than the intended target. This can lead to data loss or corruption. The vulnerability has a CVSS score of 7.1 and is considered high-severity. Defenders should prioritize verifying and remediating this vulnerability, especially in systems with high-integrity data.

Defensive priority

Defenders should prioritize verifying and remediating this vulnerability in Laravel MongoDB integrations, especially in systems with high-integrity data.

Recommended defensive actions

• Verify the version of Laravel MongoDB in use and check if it is within the vulnerable range (4.0.0 to 5.11.0).
• Implement input validation and sanitization for embedded record identifiers to prevent query condition injection.
• Consider upgrading to a version of Laravel MongoDB that is outside the vulnerable range, if available.
• Review and restrict user permissions to prevent unauthorized modification of embedded documents.
• 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 CVE record and NVD entry provide details on the vulnerability, including its description, CVSS score, and affected versions. The vulnerability exists in the MongoDB integration for Laravel, specifically in the embedded-document relation handling. There are no known exploits or reports of this vulnerability being used in attacks. However, defenders should verify the version of Laravel MongoDB in use and check if it is within the vulnerable range (4.0.0 to 5.11.0).

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.