StackPrism

npm package

multer vulnerabilities by version

The latest release, 2.4.0 (Sep 14, 2026), has no known vulnerabilities. 65% of last week’s 22.6M downloads went to versions with known vulnerabilities. OSV.dev lists 14 advisories for multer; the newest was published on Sep 28, 2026.

npm (opens in a new tab) describes it as “Middleware for handling `multipart/form-data`.”

Latest release
2.4.0
Sep 14, 2026, no known vulnerabilities
Downloads last week
22.6M
All versions, from npm
Advisories on OSV.dev
14
Newest Sep 28, 2026
Licence
MIT
OpenSSF Scorecard
7.3/10
expressjs/multer (opens in a new tab)

Most-downloaded versions last week

From npm’s per-version download counts for the last 7 days, each checked against OSV.dev. Open a version for its advisories and what to upgrade to.

VersionKnown vulnerabilitiesDownloads
2.4.0latestSep 14, 2026No known vulnerabilities7.8M
2.2.0Jun 15, 20265 known vulnerabilities, worst rated critical3.2M
2.0.2Jul 17, 20258 known vulnerabilities, worst rated critical3M
2.1.1Mar 4, 20265 known vulnerabilities, worst rated critical2.3M
2.3.0Aug 28, 20261 known vulnerability, worst rated warning2.3M
1.4.5-lts.2Mar 20, 202511 known vulnerabilities, worst rated criticalDeprecated1.4M
1.4.5-lts.1May 30, 202211 known vulnerabilities, worst rated criticalDeprecated887.1K
1.4.4-lts.1May 29, 202211 known vulnerabilities, worst rated criticalDeprecated793.4K

Who is still on a vulnerable multer

65% of last week’s 22.6M multer downloads went to versions with known vulnerabilities.

From npm’s per-version download counts for the last 7 days, each version checked against OSV.dev. The versions checked cover over 99% of downloads.

Release lines

The newest release of each major line, from the registry. multer doesn’t publish support dates we can check.

LineNewest releaseReleased
22.4.0Sep 14, 2026
11.4.4Dec 7, 2021
0.10.1.8Feb 21, 2015
0.00.0.7May 9, 2014

Newest advisories

The 5 most recently published, with the versions each one affects.

  1. WarningCVE-2026-88932 on OSV.dev (opens in a new tab)GHSA-3pph-fpjx-jg34

    multer vulnerable to Denial of Service via orphaned disk writes on aborted uploads

    Affects >= 2.2.0, < 2.4.0. Published Sep 28, 2026.

  2. CriticalCVE-2026-77078 on OSV.dev (opens in a new tab)GHSA-wc9g-mqfw-jrwm

    multer vulnerable to Denial of Service via crafted multipart field names

    Affects < 2.3.0. Published Sep 8, 2026.

  3. CriticalCVE-2026-77037 on OSV.dev (opens in a new tab)GHSA-qfvm-cv95-jqjf

    multer vulnerable to Denial of Service via file descriptor leak on aborted uploads

    Affects >= 2.2.0, < 2.3.0. Published Sep 8, 2026.

  4. LowCVE-2026-77063 on OSV.dev (opens in a new tab)GHSA-qvfw-j98x-7q72

    multer vulnerable to file size limit bypass via async fileFilter race condition

    Affects < 2.3.0. Published Sep 8, 2026.

  5. CriticalCVE-2026-82333 on OSV.dev (opens in a new tab)GHSA-535w-7cp7-47q4

    multer vulnerable to Denial of Service via oversized array index in field names

    Affects < 2.3.0. Published Sep 8, 2026.

All 14 advisories are on OSV.dev (opens in a new tab).

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How this page is checked

StackPrism reads every OSV.dev advisory for multer, merges duplicates filed under several ids, and asks OSV.dev which ones affect each version listed. Releases and their dates come from deps.dev, downloads from npm. No AI writes this page: every sentence comes from that data, refreshed every few hours.

Last checked against OSV.dev, CISA KEV, npm and deps.dev.