Security Advisory

CVE-2026-5038

CVE vulnerability detail - eXtreme Datacenter Security Operations

Published 2026-06-15 14:23:24

Last updated 2026-06-15 16:07:45

Assigner openjs

CVSS score 5.3

State PUBLISHED

Description

Impact: multer versions 2.0.0-alpha.1 through 2.1.1 and 3.0.0-alpha.1 are vulnerable to a Denial of Service when using diskStorage. Aborted or malformed multipart uploads leave orphaned partial files on disk because the Readable.pipe() call does not propagate the stream destroy signal to the underlying fs.WriteStream. An attacker can exhaust disk space by triggering many aborted uploads, with no application bug required. Patches: Users should upgrade to multer 2.2.0 (2.x line) or 3.0.0-alpha.2 (3.x prerelease). Both versions track in-flight write streams and clean them up on the abort path. Workarounds: None.

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