MEDIUMnpm →
multer vulnerable to file size limit bypass via async fileFilter race condition
multer vulnerable to file size limit bypass via async fileFilter race condition
Affected packages
- multer
Exploit signal
- Known exploited (CISA KEV)
- No
- EPSS score
- —
- EPSS percentile
- —
EPSS is the probability a CVE is exploited in the wild; percentile is its rank among all CVEs.
Sources
- https://github.com/expressjs/multer/security/advisories/GHSA-qvfw-j98x-7q72
- https://nvd.nist.gov/vuln/detail/CVE-2026-77063
- https://github.com/expressjs/multer/commit/ab6aeae650328cf31799dcfa4c3e116ba8faaacc
- https://cna.openjsf.org/security-advisories.html
- https://github.com/expressjs/multer
- https://github.com/expressjs/multer/releases/tag/v2.3.0
Structured record: https://osv.dev/vulnerability/GHSA-qvfw-j98x-7q72
Recommended response stack
Snyk — Scan your dependencies in CI and fix this vulnerability.→Socket — Detect malicious and compromised packages before they ship.→
Some links are affiliate links — HackTribune may earn a commission at no extra cost to you.
Get incidents like this as alerts for your stack.
Join the beta