CVE-2026-77037High· 7.5▾ Twilightmulter vulnerable to Denial of Service via file descriptor leak on aborted uploads
▾ Twilight zone — High severity, or a signal on a lesser flaw
impact 41.3 · likelihood 0.1 · exploitation 0
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Exploit-prediction probability, daily snapshots since Sep 8.
Disclosure to exploitation, from the record and what we observed since indexing it.
Disclosed via GHSA
0.3%
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.
Users should upgrade to 2.3.0.
None.
multer = 2.2.0Upgrade to a patched release:
multer 2.3.0Connected by shared product, vendor, weakness, or advisory.
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