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TI-2026-60297 Aliases CVE-2026-88932GHSA-3pph-fpjx-jg34

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

Priority LOW 31CWE-400Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Impact type
Denial of service
Confidentiality · integrity · availability
None · None · Low
Fix status
Fixed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA, GitHub and Red Hat. Impact type from CWE-400.

Summary

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.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00532 45th percentileScored 2026-11-07
Fix Fixed multer (multer): 2.4.0multer (npm): 2.4.0Red Hat: 5 advisories

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
Yes
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
expressjsmulter2.2.0 to before 2.4.02.4.0Patch availableCNA
—multer (npm)2.2.0 to before 2.4.02.4.0Patch availableGHSA-3pph-fpjx-jg34
  • multer Vendorexpressjs Affected 2.2.0 to before 2.4.0 Fixed in 2.4.0 Patch available CNA
  • multer (npm) Vendor— Affected 2.2.0 to before 2.4.0 Fixed in 2.4.0 Patch available GHSA-3pph-fpjx-jg34

CPE names Threatist (inferred) · 1

Inferred from how NVD named this product before; not given by a source.

CPEVersionsRoleVendor
cpe:2.3:a:expressjs:multer:*:*:*:*:*:*:*:*——expressjs
  • cpe:2.3:a:expressjs:multer:*:*:*:*:*:*:*:* Versions — — ·expressjs

Remediation

  • Fix · CNA multer (multer) Fixed in 2.4.0
  • Fix · GHSA-3pph-fpjx-jg34 multer (npm) Fixed in 2.4.0 Advisory →

Red Hat 5 advisories

  • RHSA-2026:82151 Released 2026-10-13 · Red Hat rating Critical
    Ansible automation portal Red Hat Enterprise Linux Images
    • Red Hat Ansible Automation Platform 2.2 registry.redhat.io/ansible-automation-platform/bootc-automation-portal-rhel9
  • RHSA-2026:79088 Released 2026-10-08 · Red Hat rating Critical
    Red Hat Developer Hub 1.10.5 release.
    • Red Hat Developer Hub 1.10 registry.redhat.io/rhdh/rhdh-hub-rhel9, registry.redhat.io/rhdh/rhdh-rhel9-operator
  • RHSA-2026:76788 Released 2026-10-06 · Red Hat rating Critical
    Red Hat Developer Hub 1.10.5 Plugin Catalog GA plugins release.
    • Red Hat Developer Hub 1.10 registry.redhat.io/rhdh/red-hat-developer-hub-backstage-plugin-lightspeed, registry.redhat.io/rhdh/red-hat-developer-hub-backstage-plugin-lightspeed-backend, registry.redhat.io/rhdh/red-hat-developer-hub-backstage-plugin-orchestrator +4
Show 2 more Red Hat advisories
  • RHSA-2026:72722 Released 2026-09-28 · Red Hat rating Important
    Ansible plug-ins for Red Hat Developer Hub Product Release Update
    • Red Hat Ansible Automation Platform 2.2 registry.redhat.io/ansible-automation-platform/automation-portal
  • RHSA-2026:72712 Released 2026-09-28 · Red Hat rating Important
    Ansible plug-ins for Red Hat Developer Hub Product Release Update
    • Red Hat Ansible Automation Platform 2.1 registry.redhat.io/ansible-automation-platform/automation-portal

Vendor assessments

Red Hat

Red Hat rating: Moderate. Red Hat's page for this CVE →

ProductStatusPlan or fix
Red Hat Ansible Automation Platform 2.1Fixed RHSA-2026:72712
Red Hat Ansible Automation Platform 2.2Fixed RHSA-2026:72722, RHSA-2026:82151
Red Hat Developer Hub 1.10Fixed RHSA-2026:76788, RHSA-2026:79088
Not affected: 2 products
  • Red Hat 3scale API Management Platform 2
  • Red Hat Developer Hub 1.10

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-88932
  2. 2026-10-03 Alias added: GHSA-3pph-fpjx-jg34
  3. 2026-10-07 Fix available: RHSA-2026:76788 · Red Hat
  4. 2026-10-07 Fix available: Red Hat Developer Hub 1.10 · Red Hat
  5. 2026-10-09 Fix available: RHSA-2026:79088 · Red Hat
  6. 2026-10-09 Affected versions changed · Red Hat
  7. 2026-10-13 Affected versions changed · Red Hat
  8. 2026-10-13 Fix available: RHSA-2026:82151 · Red Hat

References

Advisory 1

Other 5

  • TI-2024-08602 Open redirect in expressjs express CVSS 3.1MEDIUM 4.7
  • TI-2026-03033 Multer vulnerable to Denial of Service via uncontrolled recursion CVSS 4.0HIGH 8.7
  • TI-2026-02853 Multer vulnerable to Denial of Service via incomplete cleanup CVSS 4.0HIGH 8.7
  • TI-2026-01995 Multer vulnerable to Denial of Service via resource exhaustion CVSS 4.0HIGH 8.7
  • TI-2025-31125 Multer vulnerable to Denial of Service via unhandled exception CVSS 4.0HIGH 8.7
  • TI-2025-30337 Multer vulnerable to Denial of Service from maliciously crafted requests CVSS 3.1HIGH 7.5
See all 21 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences