CVE Explorer

CVE-2026-5038

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

Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:e7a13b44c7b16f7ed6629bcf850d9c7db420c9e1b6a0f0becfe1bcb5e60520f2

Known exploited

Not asserted

Disputed

Stale source

Conflicts

Affected products and versions

1 source assertion

{"defaultStatus":"unaffected","packageURL":"pkg:npm/multer","product":"multer","vendor":"multer","versions":[{"lessThan":"2.2.0","status":"affected","version":"2.0.0-alpha.1","versionType":"semver"},{"status":"unaffected","version":"2.2.0","versionType":"semver"},{"lessThan":"3.0.0-alpha.2","status":"affected","version":"3.0.0-alpha.1","versionType":"semver"},{"status":"unaffected","version":"3.0.0-alpha.2","versionType":"semver"}]}

cve_program_cvelist_v5affected
urn:baitaphish:normalized-source-record:v2:3e4c3977fe96ee85ce2d66565fa8578a43de97536cdf3eaeaebe945ec2440cd4 · sha256:2b27e062270cf786… · /containers/cna/affected/0

Provider-owned CVSS observations

1 source assertion

{"metric":{"baseScore":5.3,"baseSeverity":"MEDIUM","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L","version":"3.1"},"metric_type":"cvssV3_1"}

cve_program_cvelist_v5cvss
urn:baitaphish:normalized-source-record:v2:3e4c3977fe96ee85ce2d66565fa8578a43de97536cdf3eaeaebe945ec2440cd4 · sha256:2b27e062270cf786… · /containers/cna/metrics/0/cvssV3_1

CWE assertions

1 source assertion

{"cweId":"CWE-459","description":"CWE-459: Incomplete Cleanup","lang":"en","type":"CWE"}

cve_program_cvelist_v5cwe
urn:baitaphish:normalized-source-record:v2:3e4c3977fe96ee85ce2d66565fa8578a43de97536cdf3eaeaebe945ec2440cd4 · sha256:2b27e062270cf786… · /containers/cna/problemTypes/0/descriptions/0

Source references

2 source assertions

{"url":"https://cna.openjsf.org/security-advisories.html"}

cve_program_cvelist_v5reference
urn:baitaphish:normalized-source-record:v2:3e4c3977fe96ee85ce2d66565fa8578a43de97536cdf3eaeaebe945ec2440cd4 · sha256:2b27e062270cf786… · /containers/cna/references/1

{"url":"https://github.com/expressjs/multer/security/advisories/GHSA-3p4h-7m6x-2hcm"}

cve_program_cvelist_v5reference
urn:baitaphish:normalized-source-record:v2:3e4c3977fe96ee85ce2d66565fa8578a43de97536cdf3eaeaebe945ec2440cd4 · sha256:2b27e062270cf786… · /containers/cna/references/0

Attribution and limitations

CVE Program CVEList V5: Reproduce the MITRE copyright designation and CVE license in copies. Source →

Provider severity values are preserved separately. Baitaphish does not convert them into a risk rating, infer affected products, or treat EPSS as observed exploitation.

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