CVE-2026-2359

HIGHNVD 7.57.5—
EchelonGraph scoreMEDIUM confidence

This high-severity CVE scores 7.5 under NVD CVSS v3. EPSS exploit probability: 0.7%, top 51% of all CVEs by exploit prediction. GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).

Triggered by: NVD CVSS baseline
Sources: epss, nvd
7.5EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 1%CVSS: 7.5Exploit: None knownExposed: 0

A fix is available — apply it.

Multer is a node.js middleware for handling multipart/form-data. A vulnerability in Multer prior to version 2.1.0 allows an attacker to trigger a Denial of Service (DoS) by dropping connection during file upload, potentially causing resource exhaustion. Users should upgrade to version 2.1.0 to receive a patch. No known workarounds are available.

CVSS v3
7.5
EG Score
7.5(medium)
EG Risk
49(Track)
EG Risk 49/100SSVC: Track

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity75% × 45%
Exploitation1% × 40%
Automatability100% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
1%
EPSS %ILE
50%
KEV
Not listed

Published

February 27, 2026

Last Modified

July 15, 2026

Advisory Details (9)

Auto-updated Jul 3, 2026
Patch available. Sources: github_commit, github, redhat.
redhat Patch Available

Affected: Red Hat Enterprise Linux 10",

https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-2359.json
redhat

2443350 – (CVE-2026-2359) CVE-2026-2359 multer: Multer: Denial of Service via dropped file upload connections

https://bugzilla.redhat.com/show_bug.cgi?id=2443350
redhat Patch Available

cve-details

https://access.redhat.com/security/cve/CVE-2026-2359
redhat Patch Available
https://access.redhat.com/errata/RHSA-2026:6802
redhat Patch Available
https://access.redhat.com/errata/RHSA-2026:6174
generic
https://www.cve.org/CVERecord?id=CVE-2026-2359
github Patch Available

Multer vulnerable to Denial of Service via resource exhaustion · Advisory · expressjs/multer · GitHub

https://github.com/expressjs/multer/security/advisories/GHSA-v52c-386h-88mc
github_commit Patch Available

commit cccf0fe0e641 (expressjs/multer)

Patch available: expressjs/multer v2.1.0 (contains commit cccf0fe0e641)

https://github.com/expressjs/multer/commit/cccf0fe0e64150c4f42ccf6654165c0d66b9adab
generic

Security Advisories | OpenJS Foundation CVE Numbering Authority

https://cna.openjsf.org/security-advisories.html

Vendor Advisories for CVE-2026-2359(2)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Patch Availability(2)

Vendor / EcosystemFixed in / PatchReleasedSource
redhatrhdh/rhdh-hub-rhel9:17751406472026-04-07redhat
redhatrhdh/rhdh-hub-rhel9:17745456052026-03-30redhat

Patches are aggregated from vendor advisories (Red Hat, Microsoft, Cisco, GitHub) and package ecosystems (OSV, GHSA). Multiple rows for the same upstream release have been deduplicated.

Affected Packages

(1 across 1 ecosystem)
npm(1)
PackageVulnerable rangeFixed inDependents
multer—2.1.0—

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 7× in last 7d / 30× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

Showing the most recent 100 of 119 total refreshes for this CVE.

  1. 2026-09-18 19:28 UTCEPSS rescore
  2. 2026-09-18 19:27 UTCEPSS rescore
  3. 2026-09-17 19:30 UTCEPSS rescore
  4. 2026-09-16 14:08 UTCEPSS rescore
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  11. 2026-09-07 16:01 UTCEPSS rescore
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  17. 2026-09-01 04:39 UTCEPSS rescore
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  19. 2026-08-31 17:34 UTCOSV refresh
  20. 2026-08-30 19:17 UTCEPSS rescore
  21. 2026-08-30 01:22 UTCEPSS rescore
  22. 2026-08-28 21:41 UTCEPSS rescore
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  24. 2026-08-26 14:46 UTCEPSS rescore
  25. 2026-08-25 13:49 UTCEPSS rescore
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  1. 2026-08-24 14:17 UTCEPSS rescore
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  3. 2026-08-21 23:49 UTCEPSS rescore
  4. 2026-08-20 22:55 UTCEPSS rescore
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  6. 2026-08-19 17:03 UTCEPSS rescore
  7. 2026-08-18 13:48 UTCEPSS rescore
  8. 2026-08-17 13:47 UTCEPSS rescore
  9. 2026-08-16 14:56 UTCEPSS rescore
  10. 2026-08-16 02:14 UTCEPSS rescore
  11. 2026-08-15 01:30 UTCEPSS rescore
  12. 2026-08-14 21:52 UTCVendor advisory
  13. 2026-08-14 08:49 UTCEG score recompute
  14. 2026-08-14 08:49 UTCVendor advisory
  15. 2026-08-13 22:00 UTCEPSS rescore
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  17. 2026-08-13 00:46 UTCVendor advisory
  18. 2026-08-12 13:50 UTCEPSS rescore
  19. 2026-08-11 23:34 UTCEG score recompute
  20. 2026-08-11 23:34 UTCVendor advisory
  21. 2026-08-11 13:42 UTCEPSS rescore
  22. 2026-08-11 06:10 UTCEG score recompute
  23. 2026-08-11 06:10 UTCVendor advisory
  24. 2026-08-11 00:00 UTCEPSS rescore
  25. 2026-08-10 13:10 UTCVendor advisory
  26. 2026-08-09 21:31 UTCEG score recompute
  27. 2026-08-09 21:31 UTCVendor advisory
  28. 2026-08-09 13:46 UTCEPSS rescore
  29. 2026-08-09 08:27 UTCEG score recompute
  30. 2026-08-09 08:27 UTCVendor advisory
  31. 2026-08-08 16:37 UTCEPSS rescore
  32. 2026-08-08 09:30 UTCVendor advisory
  33. 2026-08-07 20:27 UTCEG score recompute
  34. 2026-08-07 20:27 UTCVendor advisory
  35. 2026-08-06 13:46 UTCEPSS rescore
  36. 2026-08-06 02:54 UTCEG score recompute
  37. 2026-08-06 02:54 UTCVendor advisory
  38. 2026-08-05 19:17 UTCEPSS rescore
  39. 2026-08-04 15:10 UTCEPSS rescore
  40. 2026-08-04 04:53 UTCEG score recompute
  41. 2026-08-04 04:53 UTCVendor advisory
  42. 2026-08-03 10:36 UTCEPSS rescore
  43. 2026-08-02 19:21 UTCEG score recompute
  44. 2026-08-02 19:21 UTCVendor advisory
  45. 2026-08-02 02:26 UTCEPSS rescore
  46. 2026-08-01 04:16 UTCEPSS rescore
  47. 2026-07-30 16:27 UTCEPSS rescore
  48. 2026-07-30 01:30 UTCEPSS rescore
  49. 2026-07-28 15:36 UTCEPSS rescore
  50. 2026-07-26 14:54 UTCEPSS rescore
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  57. 2026-07-23 03:07 UTCEG score recompute
  58. 2026-07-22 14:08 UTCEPSS rescore
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  60. 2026-07-21 15:24 UTCEPSS rescore
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  67. 2026-07-18 10:04 UTCEPSS rescore
  68. 2026-07-18 10:04 UTCEPSS rescore
  69. 2026-07-18 06:59 UTCOSV refresh
  70. 2026-07-16 17:03 UTCEPSS rescore
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  72. 2026-07-15 16:57 UTCEPSS rescore
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  74. 2026-07-15 02:00 UTCEPSS rescore
  75. 2026-07-15 02:00 UTCEPSS rescore

Related CVEs(same vendor + same CWE)

Frequently asked(5)

What is CVE-2026-2359?
CVE-2026-2359 is a high vulnerability published on February 27, 2026. Multer is a node.js middleware for handling multipart/form-data. A vulnerability in Multer prior to version 2.1.0 allows an attacker to trigger a Denial of Service (DoS) by dropping connection during file upload, potentially causing resource exhaustion. Users should upgrade to version 2.1.0 to…
When was CVE-2026-2359 disclosed?
CVE-2026-2359 was first published in the National Vulnerability Database on February 27, 2026, with the most recent update on July 15, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-2359 actively exploited?
CVE-2026-2359 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 1% probability of exploitation in the next 30 days, which ranks it in the top 49.8% of all scored CVEs.
What is the CVSS score of CVE-2026-2359?
CVE-2026-2359 has a CVSS v3 base score of 7.5 (NVD).
How do I remediate CVE-2026-2359?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-2359, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

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