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.
Project Subscriptions
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Solution
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Workaround
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Mon, 15 Jun 2026 16:30:00 +0000
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| Metrics |
ssvc
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Mon, 15 Jun 2026 16:00:00 +0000
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| 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. | |
| Title | multer vulnerable to Denial of Service via incomplete cleanup of aborted uploads | |
| Weaknesses | CWE-459 | |
| References |
| |
| Metrics |
cvssV3_1
|
Projects
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Status: PUBLISHED
Assigner: openjs
Published:
Updated: 2026-06-15T16:07:45.114Z
Reserved: 2026-03-27T16:26:09.638Z
Link: CVE-2026-5038
Updated: 2026-06-15T16:07:33.955Z
Status : Received
Published: 2026-06-15T16:16:34.423
Modified: 2026-06-15T16:16:34.423
Link: CVE-2026-5038
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OpenCVE Enrichment
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