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MEDIUM

CVE-2026-88932

CVSS v3

5.3

MEDIUM

EPSS Score

0.5 %

exploit probability, as of 2026-10-19

CISA KEV

No

known exploited

Exploitation

—

SSVC status

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Affected and fixed versions

Packages from OSV.dev and products from the vendors' CSAF advisories.

version not verifiedVersions not verified: read as OSV.dev and the vendors publish them, not checked against each vendor's release list.

Packages

  • multernpmfrom 2.2.0 · fixed in 2.4.0

Vendor advisories

  • CVE-2026-88932 Red Hat Product Security6 products fixed

    multer: multer: Denial of Service via orphaned disk writes on aborted uploads

  • RHSA-2026:82151 Red Hat Product Security1 product fixed

    Red Hat Security Advisory: Ansible automation portal Red Hat Enterprise Linux Images

  • RHSA-2026:79088 Red Hat Product Security1 product fixed

    Red Hat Security Advisory: Red Hat Developer Hub 1.10.5 release.

  • RHSA-2026:76788 Red Hat Product Security2 products fixed

    Red Hat Security Advisory: Red Hat Developer Hub 1.10.5 Plugin Catalog GA plugins release.

  • RHSA-2026:72722 Red Hat Product Security1 product fixed

    Red Hat Security Advisory: Ansible plug-ins for Red Hat Developer Hub Product Release Update

  • RHSA-2026:72712 Red Hat Product Security1 product fixed

    Red Hat Security Advisory: Ansible plug-ins for Red Hat Developer Hub Product Release Update

Full record on NVD

Description

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.

Technical details

CVSS v3 Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
Published
2026-09-14
Last Modified
2026-09-14

Frequently asked questions

What is CVE-2026-88932?

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.

Is CVE-2026-88932 actively exploited?

Active exploitation of CVE-2026-88932 has not been confirmed. Its EPSS score was 0.5% on 2026-10-19, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2026-88932?

CVE-2026-88932 has a CVSS v3 base score of 5.3 (MEDIUM severity), with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L.

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