CVE-2026-88932

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Source
https://cve.org/CVERecord?id=CVE-2026-88932
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-88932.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2026-88932
Aliases
Downstream
CGA (4)
CLSA (1)
MINI (1)
Published
2026-09-14T08:46:12Z
Modified
2026-09-20T11:47:28Z
Severity
  • 5.3 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L CVSS Calculator
Summary
multer vulnerable to Denial of Service via orphaned disk writes on aborted uploads
Details

multer is a Node.js middleware for handling multipart/form-data uploads. In versions 2.2.0 through 2.3.0, when a request using disk storage is aborted mid-upload, file writes that complete after multer has already run its abort cleanup are not removed, so each aborted upload can leave an orphaned file on disk. A remote unauthenticated attacker can repeatedly start and abort uploads to accumulate orphaned files and exhaust disk space, causing a denial of service. The issue is fixed in multer 2.4.0, and users should upgrade to 2.4.0 or later.

Database specific 
{
    "cna_assigner":  "openjs",
    "cwe_ids":  [
        "CWE-400",
        "CWE-459"
    ],
    "osv_generated_from":  "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/88xxx/CVE-2026-88932.json"
}
References

Affected packages

Git / github.com/expressjs/multer

Affected ranges

Type
GIT
Repo
https://github.com/expressjs/multer
Events
Introduced
2e2af08157c66cbbc76539ccbd8869097a0c8feb
Fixed
35979e5afbb814bdb4b750ce028b125eb84c53af
Database specific
Show details 
{
    "extracted_events":  [
        {
            "introduced":  "2.2.0"
        },
        {
            "fixed":  "2.4.0"
        },
        {
            "fixed":  "2.3.0"
        }
    ],
    "source":  [
        "AFFECTED_FIELD",
        "DESCRIPTION"
    ]
}

Affected versions

v2.*
v2.2.0
v2.3.0

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-88932.json"