highCVSS 7.5Vulnerability
CVE-2026-77037
### Impact A vulnerability in multer `2.2.0` allows an attacker to trigger a Denial of Service (DoS) by aborting or truncating multipart uploads. When using `diskStorage`, the destination write stream is not closed if the upload is aborted before it finishes, so each failed request leaks an open file descriptor and retains its disk blocks until the process exits. Repeated failed uploads can exhaust the available file descriptors. All applications using multer's disk storage are affected. ### Patches Users should upgrade to `2.3.0`. ### Workarounds None.
Properties
- summary
- multer vulnerable to Denial of Service via file descriptor leak on aborted uploads
- severity
- high
- cvss_score
- 7.5
- epss_score
- 0.00347
- ghsa_published
- 2026-09-08T21:29:51Z
- source_url
- https://github.com/advisories/GHSA-qfvm-cv95-jqjf
- ghsa_updated
- 2026-09-08T21:29:51Z
- ghsa_id
- GHSA-qfvm-cv95-jqjf
- score
- 7.5
- cve_id
- CVE-2026-77037
- cvss_vector
- CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- is_ghsa_only
- false
- vector
- CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- published_at
- 2026-08-28T22:16:53.627
- last_modified
- 2026-09-02T14:47:21.140
- epss_percentile
- 0.27682
Related Entities (8)
VULNERABLE_TO (1)
←[Software]npm/multer
AFFECTS (1)
→[Software]npm/multer
REPORTED_BY (1)
→[Source]GitHub Advisory Database
ENRICHED_BY (1)
→[Source]FIRST EPSS
HAS_WEAKNESS (2)
→[Weakness]Uncontrolled Resource Consumption
→[Weakness]Incomplete Cleanup
DESCRIBED_BY (1)
→[Source]NVD
AFFECTS_PRODUCT (1)
→[Product]
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