CVE-2026-5038

HIGHNVD 7.57.5—
EchelonGraph scoreMEDIUM confidence

This high-severity CVE scores 7.5 under NVD CVSS v3. EPSS exploit probability: 0.3%, top 80% 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
Trending — 3 sources updated this week
7.5EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 7.5Exploit: None knownExposed: 0

A fix is available — apply it.

Impact: multer versions 2.0.0-alpha.1 through 2.1.1 and 3.0.0-alpha.1 are vulnerable to a Denial of Service when using diskStorage. Aborted or malformed multipart uploads leave orphaned partial files on disk because the Readable.pipe() call does not propagate the stream destroy signal to the underlying fs.WriteStream. An attacker can exhaust disk space by triggering many aborted uploads, with no application bug required.

Patches: Users should upgrade to multer 2.2.0 (2.x line) or 3.0.0-alpha.2 (3.x prerelease). Both versions track in-flight write streams and clean them up on the abort path.

Workarounds: None.

CVSS v3
7.5
EG Score
7.5(medium)
EG Risk
38(Track)
EG Risk 38/100SSVC: 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%
Exploitation0% × 40%
Automatability30% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
21%
KEV
Not listed

Published

June 15, 2026

Last Modified

June 16, 2026

Advisory Details (2)

Auto-updated Jun 15, 2026
Patch available. Sources: github.
github Patch Available

Multer vulnerable to Denial of Service via incomplete cleanup of aborted uploads · Advisory · expressjs/multer · GitHub

https://github.com/expressjs/multer/security/advisories/GHSA-3p4h-7m6x-2hcm
generic

Security Advisories | OpenJS Foundation CVE Numbering Authority

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

Vendor Advisories for CVE-2026-5038(4)

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

Patch Availability(3)

Vendor / EcosystemFixed in / PatchReleasedSource
redhatrhdh/rhdh-hub-rhel9:17859728432026-08-10redhat
redhatrhdh/rhdh-hub-rhel9:17854116522026-08-03redhat
redhatrhdh/red-hat-developer-hub-backstage-plugin-orchestrator-backend:17853328252026-07-29redhat

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—3.0.0-alpha.2—

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 8× in last 7d / 37× 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 186 total refreshes for this CVE.

  1. 2026-09-18 19:28 UTCEPSS rescore
  2. 2026-09-17 19:31 UTCEPSS rescore
  3. 2026-09-16 14:08 UTCEPSS rescore
  4. 2026-09-16 05:15 UTCEPSS rescore
  5. 2026-09-15 03:11 UTCEPSS rescore
  6. 2026-09-14 03:47 UTCEG score recompute
  7. 2026-09-14 03:47 UTCVendor advisory
  8. 2026-09-13 16:47 UTCEPSS rescore
  9. 2026-09-11 14:53 UTCEPSS rescore
  10. 2026-09-10 09:35 UTCEPSS rescore
  11. 2026-09-08 22:01 UTCEPSS rescore
  12. 2026-09-07 16:01 UTCEPSS rescore
  13. 2026-09-06 13:47 UTCEPSS rescore
  14. 2026-09-04 05:07 UTCEPSS rescore
  15. 2026-09-02 14:12 UTCEPSS rescore
  16. 2026-09-01 13:54 UTCEPSS rescore
  17. 2026-09-01 04:40 UTCEPSS rescore
  18. 2026-08-30 22:59 UTCEG score recompute
  19. 2026-08-30 22:59 UTCVendor advisory
  20. 2026-08-30 19:17 UTCEPSS rescore
  21. 2026-08-30 01:22 UTCEPSS rescore
  22. 2026-08-28 21:42 UTCEPSS rescore
  23. 2026-08-27 14:25 UTCEPSS rescore
  24. 2026-08-26 14:46 UTCEPSS rescore
  25. 2026-08-25 13:49 UTCEPSS rescore
Show 75 more
  1. 2026-08-24 23:38 UTCEG score recompute
  2. 2026-08-24 23:38 UTCVendor advisory
  3. 2026-08-23 23:19 UTCVendor advisory
  4. 2026-08-23 09:49 UTCEG score recompute
  5. 2026-08-23 09:49 UTCVendor advisory
  6. 2026-08-23 00:19 UTCEPSS rescore
  7. 2026-08-21 23:49 UTCEPSS rescore
  8. 2026-08-21 23:32 UTCVendor advisory
  9. 2026-08-21 10:27 UTCEG score recompute
  10. 2026-08-21 10:27 UTCVendor advisory
  11. 2026-08-20 22:55 UTCEPSS rescore
  12. 2026-08-20 21:31 UTCVendor advisory
  13. 2026-08-20 08:41 UTCEG score recompute
  14. 2026-08-20 08:41 UTCVendor advisory
  15. 2026-08-19 17:04 UTCEPSS rescore
  16. 2026-08-19 13:15 UTCEG score recompute
  17. 2026-08-19 13:15 UTCVendor advisory
  18. 2026-08-18 13:48 UTCEPSS rescore
  19. 2026-08-17 15:51 UTCEG score recompute
  20. 2026-08-17 15:51 UTCVendor advisory
  21. 2026-08-17 13:47 UTCEPSS rescore
  22. 2026-08-17 03:02 UTCEG score recompute
  23. 2026-08-17 03:02 UTCVendor advisory
  24. 2026-08-16 14:56 UTCEPSS rescore
  25. 2026-08-16 14:12 UTCEG score recompute
  26. 2026-08-16 14:12 UTCVendor advisory
  27. 2026-08-16 01:23 UTCVendor advisory
  28. 2026-08-15 12:33 UTCEG score recompute
  29. 2026-08-15 12:33 UTCVendor advisory
  30. 2026-08-15 01:30 UTCEPSS rescore
  31. 2026-08-14 23:43 UTCVendor advisory
  32. 2026-08-14 10:54 UTCVendor advisory
  33. 2026-08-13 22:04 UTCEG score recompute
  34. 2026-08-13 22:04 UTCVendor advisory
  35. 2026-08-13 22:00 UTCEPSS rescore
  36. 2026-08-13 08:23 UTCVendor advisory
  37. 2026-08-12 19:34 UTCEG score recompute
  38. 2026-08-12 19:34 UTCVendor advisory
  39. 2026-08-12 13:51 UTCEPSS rescore
  40. 2026-08-12 06:44 UTCVendor advisory
  41. 2026-08-11 16:51 UTCEG score recompute
  42. 2026-08-11 16:51 UTCVendor advisory
  43. 2026-08-11 04:01 UTCEG score recompute
  44. 2026-08-11 04:01 UTCVendor advisory
  45. 2026-08-11 00:00 UTCEPSS rescore
  46. 2026-08-10 15:12 UTCVendor advisory
  47. 2026-08-10 02:22 UTCEG score recompute
  48. 2026-08-10 02:22 UTCVendor advisory
  49. 2026-08-09 13:46 UTCEPSS rescore
  50. 2026-08-09 13:33 UTCVendor advisory
  51. 2026-08-09 00:44 UTCEG score recompute
  52. 2026-08-09 00:44 UTCVendor advisory
  53. 2026-08-08 16:37 UTCEPSS rescore
  54. 2026-08-08 11:54 UTCVendor advisory
  55. 2026-08-07 23:05 UTCEG score recompute
  56. 2026-08-07 23:05 UTCVendor advisory
  57. 2026-08-07 10:15 UTCVendor advisory
  58. 2026-08-06 21:25 UTCEG score recompute
  59. 2026-08-06 21:25 UTCVendor advisory
  60. 2026-08-06 13:47 UTCEPSS rescore
  61. 2026-08-06 08:36 UTCVendor advisory
  62. 2026-08-05 19:46 UTCEG score recompute
  63. 2026-08-05 19:46 UTCVendor advisory
  64. 2026-08-05 19:17 UTCEPSS rescore
  65. 2026-08-04 16:23 UTCEG score recompute
  66. 2026-08-04 16:23 UTCVendor advisory
  67. 2026-08-04 15:10 UTCEPSS rescore
  68. 2026-08-04 10:39 UTCEPSS rescore
  69. 2026-08-04 03:34 UTCVendor advisory
  70. 2026-08-03 14:44 UTCEG score recompute
  71. 2026-08-03 14:44 UTCVendor advisory
  72. 2026-08-03 10:36 UTCEPSS rescore
  73. 2026-08-02 23:29 UTCVendor advisory
  74. 2026-08-02 10:39 UTCEG score recompute
  75. 2026-08-02 10:39 UTCVendor advisory

Frequently asked(5)

What is CVE-2026-5038?
CVE-2026-5038 is a high vulnerability published on June 15, 2026. Impact: multer versions 2.0.0-alpha.1 through 2.1.1 and 3.0.0-alpha.1 are vulnerable to a Denial of Service when using diskStorage. Aborted or malformed multipart uploads leave orphaned partial files on disk because the Readable.pipe() call does not propagate the stream destroy signal to the…
When was CVE-2026-5038 disclosed?
CVE-2026-5038 was first published in the National Vulnerability Database on June 15, 2026, with the most recent update on June 16, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-5038 actively exploited?
CVE-2026-5038 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0% probability of exploitation in the next 30 days, which ranks it in the top 79.4% of all scored CVEs.
What is the CVSS score of CVE-2026-5038?
CVE-2026-5038 has a CVSS v3 base score of 7.5 (NVD).
How do I remediate CVE-2026-5038?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-5038, 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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