multer is a middleware for handling multipart/form-data in Node.js. In version 2.2.0, when a disk-backed upload is aborted or truncated before the write stream finishes, multer's disk storage engine removes the visible file but does not close the underlying write file descriptor, leaving a deleted but still open descriptor. A remote attacker able to reach an upload route using the built-in disk storage can send repeated aborted or malformed multipart uploads, each one leaking a file descriptor and retaining disk blocks until the process exits, which can exhaust resources and cause a denial of service. The issue is fixed in multer 2.3.0, which closes the destination write stream on abnormal source termination and defers cleanup until the stream has closed. Upgrade to multer 2.3.0 to remediate.

There are packages installed that are affected by a vulnerability referenced in the following CVE:

  - multer is a middleware for handling multipart/form-data in Node.js. In version 2.2.0, when a disk-backed
    upload is aborted or truncated before the write stream finishes, multer's disk storage engine removes the
    visible file but does not close the underlying write file descriptor, leaving a deleted but still open
    descriptor. A remote attacker able to reach an upload route using the built-in disk storage can send
    repeated aborted or malformed multipart uploads, each one leaking a file descriptor and retaining disk
    blocks until the process exits, which can exhaust resources and cause a denial of service. The issue is
    fixed in multer 2.3.0, which closes the destination write stream on abnormal source termination and defers
    cleanup until the stream has closed. Upgrade to multer 2.3.0 to remediate. (CVE-2026-77037)

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available.

  - multer is a middleware for handling multipart/form-data in Node.js. In version 2.2.0, when a disk-backed     upload is aborted or truncated before the write stream finishes, multer's disk storage engine removes the     visible file but does not close the underlying write file descriptor, leaving a deleted but still open     descriptor. A remote attacker able to reach an upload route using the built-in disk storage can send     repeated aborted or malformed multipart uploads, each one leaking a file descriptor and retaining disk     blocks until the process exits, which can exhaust resources and cause a denial of service. The issue is     fixed in multer 2.3.0, which closes the destination write stream on abnormal source termination and defers     cleanup until the stream has closed. Upgrade to multer 2.3.0 to remediate. (CVE-2026-77037)

Note that Nessus relies on the presence of the package as reported by the vendor.

ID	Name	Product	Family	Type	Severity
464069	Echo: multer: security update to 2.3.0	Tenable Cloud Security	Echo Local Security Checks	Local	high
464069	Echo: multer: security update to 2.3.0	Tenable Self-Hosted Container Security	Echo Local Security Checks	Local	high
350851	Linux Distros Unpatched Vulnerability : CVE-2026-77037	Nessus	Misc.	Local	high

Detections

Analytics

CVE-2026-77037

high

Tenable Plugins

high

high

high