CVE-2026-64642

HIGHNVD 8.28.2—
EchelonGraph scoreMEDIUM confidence

This high-severity CVE scores 8.2 under NVD CVSS v3. EPSS exploit probability: 1.0%, top 39% 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
8.2EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 1%CVSS: 8.2Exploit: None knownExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

Next.js is a React framework for building full-stack web applications. In versions 16.0.0 through 16.2.10, crafted requests targeting Next.js applications using App Router built with Turbopack and a single entry in config.i18n.locales can bypass middleware/proxy based authentication. This issue has been fixed in version 16.2.11.

CVSS v3
8.2
EG Score
8.2(medium)
EG Risk
37(Track)
EG Risk 37/100SSVC: 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
Severity82% × 45%
Exploitation1% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
1%
EPSS %ILE
61%
KEV
Not listed

Published

July 22, 2026

Last Modified

July 29, 2026

Advisory Details (4)

Auto-updated Jul 27, 2026
Patch available. Sources: github_pr, github_release, github, github_commit.
github Patch Available

Middleware / Proxy bypass in App Router applications using Turbopack and single locale · Advisory · vercel/next.js · GitHub

https://github.com/vercel/next.js/security/advisories/GHSA-6gpp-xcg3-4w24
github_release Patch Available

v16.2.11

Patch available: vercel/next.js v16.2.11

https://github.com/vercel/next.js/releases/tag/v16.2.11
github_pr Patch Available

Fix Turbopack middleware matcher with i18n single locale

Patch available: vercel/next.js v16.3.0-canary.92 (PR #96014 merged 2026-07-21)

https://github.com/vercel/next.js/pull/96014
github_commit Patch Available

commit 6bf4df14508a (vercel/next.js)

Patch available: vercel/next.js v16.3.0-canary.92 (contains commit 6bf4df14508a)

https://github.com/vercel/next.js/commit/6bf4df14508ad6c0cd46af50c6051ee42f2d9151

Vendor Advisories for CVE-2026-64642(1)

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

Affected Packages

(1 across 1 ecosystem)
npm(1)
PackageVulnerable rangeFixed inDependents
next—16.2.11—

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 7× in last 7d / 44× 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.

  1. 2026-09-13 22:25 UTCEG score recompute
  2. 2026-09-12 20:53 UTCEG score recompute
  3. 2026-09-11 20:28 UTCEG score recompute
  4. 2026-09-11 14:53 UTCEPSS rescore
  5. 2026-09-11 09:37 UTCEPSS rescore
  6. 2026-09-10 21:14 UTCEG score recompute
  7. 2026-09-09 09:10 UTCEG score recompute
  8. 2026-09-08 22:01 UTCEPSS rescore
  9. 2026-09-07 21:39 UTCEG score recompute
  10. 2026-09-07 16:01 UTCEPSS rescore
  11. 2026-09-06 13:47 UTCEPSS rescore
  12. 2026-09-05 19:33 UTCEG score recompute
  13. 2026-09-05 15:31 UTCEPSS rescore
  14. 2026-09-05 07:05 UTCEG score recompute
  15. 2026-09-04 13:39 UTCEG score recompute
  16. 2026-09-04 05:07 UTCEPSS rescore
  17. 2026-09-02 14:12 UTCEPSS rescore
  18. 2026-09-01 23:30 UTCEG score recompute
  19. 2026-09-01 13:54 UTCEPSS rescore
  20. 2026-09-01 04:40 UTCEPSS rescore
  21. 2026-08-30 23:44 UTCEG score recompute
  22. 2026-08-30 19:17 UTCEPSS rescore
  23. 2026-08-30 12:16 UTCEG score recompute
  24. 2026-08-30 01:22 UTCEPSS rescore
  25. 2026-08-30 00:48 UTCEG score recompute
Show 66 more
  1. 2026-08-28 21:42 UTCEPSS rescore
  2. 2026-08-28 01:32 UTCEG score recompute
  3. 2026-08-27 01:07 UTCEG score recompute
  4. 2026-08-26 14:47 UTCEPSS rescore
  5. 2026-08-25 14:28 UTCEG score recompute
  6. 2026-08-25 13:49 UTCEPSS rescore
  7. 2026-08-24 15:19 UTCEG score recompute
  8. 2026-08-23 04:57 UTCEG score recompute
  9. 2026-08-23 00:19 UTCEPSS rescore
  10. 2026-08-22 06:01 UTCEG score recompute
  11. 2026-08-21 23:49 UTCEPSS rescore
  12. 2026-08-21 07:07 UTCEG score recompute
  13. 2026-08-20 22:55 UTCEPSS rescore
  14. 2026-08-19 20:41 UTCEG score recompute
  15. 2026-08-19 17:04 UTCEPSS rescore
  16. 2026-08-18 19:09 UTCEG score recompute
  17. 2026-08-18 13:48 UTCEPSS rescore
  18. 2026-08-17 17:17 UTCEG score recompute
  19. 2026-08-17 13:47 UTCEPSS rescore
  20. 2026-08-16 18:09 UTCEG score recompute
  21. 2026-08-16 14:56 UTCEPSS rescore
  22. 2026-08-16 06:41 UTCEG score recompute
  23. 2026-08-15 07:47 UTCEG score recompute
  24. 2026-08-15 01:30 UTCEPSS rescore
  25. 2026-08-14 08:52 UTCEG score recompute
  26. 2026-08-13 22:00 UTCEPSS rescore
  27. 2026-08-12 22:27 UTCEG score recompute
  28. 2026-08-12 13:51 UTCEPSS rescore
  29. 2026-08-11 23:32 UTCEG score recompute
  30. 2026-08-11 00:37 UTCEG score recompute
  31. 2026-08-11 00:00 UTCEPSS rescore
  32. 2026-08-09 14:16 UTCEG score recompute
  33. 2026-08-09 13:47 UTCEPSS rescore
  34. 2026-08-09 02:49 UTCEG score recompute
  35. 2026-08-08 16:37 UTCEPSS rescore
  36. 2026-08-08 03:54 UTCEG score recompute
  37. 2026-08-06 17:33 UTCEG score recompute
  38. 2026-08-06 13:47 UTCEPSS rescore
  39. 2026-08-06 06:06 UTCEG score recompute
  40. 2026-08-05 19:17 UTCEPSS rescore
  41. 2026-08-05 19:17 UTCEPSS rescore
  42. 2026-08-04 19:44 UTCEG score recompute
  43. 2026-08-04 15:10 UTCEPSS rescore
  44. 2026-08-04 10:39 UTCEPSS rescore
  45. 2026-08-03 20:48 UTCEG score recompute
  46. 2026-08-03 10:36 UTCEPSS rescore
  47. 2026-08-02 10:21 UTCEG score recompute
  48. 2026-08-02 02:27 UTCEPSS rescore
  49. 2026-08-01 11:27 UTCEG score recompute
  50. 2026-08-01 04:16 UTCEPSS rescore
  51. 2026-07-31 01:03 UTCEG score recompute
  52. 2026-07-30 16:28 UTCEPSS rescore
  53. 2026-07-30 13:34 UTCEG score recompute
  54. 2026-07-30 02:06 UTCEG score recompute
  55. 2026-07-30 01:30 UTCEPSS rescore
  56. 2026-07-30 01:30 UTCEPSS rescore
  57. 2026-07-29 14:39 UTCEG score recompute▼ 0.10
  58. 2026-07-29 14:39 UTCNVD updateCVSS v3 → 8.2
  59. 2026-07-28 16:31 UTCEG score recompute
  60. 2026-07-28 15:38 UTCEG score recompute
  61. 2026-07-28 15:37 UTCEPSS rescore
  62. 2026-07-27 18:22 UTCEG score recompute
  63. 2026-07-27 18:11 UTCEG score recompute▲ 8.30
  64. 2026-07-27 18:09 UTCMITRE cvelistV5CVSS v3 → 8.3 · CVSS v4 → 8.3
  65. 2026-07-23 03:22 UTCEG score recompute
  66. 2026-07-22 23:22 UTCEG score recompute

Frequently asked(5)

What is CVE-2026-64642?
CVE-2026-64642 is a high vulnerability published on July 22, 2026. Next.js is a React framework for building full-stack web applications. In versions 16.0.0 through 16.2.10, crafted requests targeting Next.js applications using App Router built with Turbopack and a single entry in config.i18n.locales can bypass middleware/proxy based authentication. This issue has…
When was CVE-2026-64642 disclosed?
CVE-2026-64642 was first published in the National Vulnerability Database on July 22, 2026, with the most recent update on July 29, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-64642 actively exploited?
CVE-2026-64642 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 38.8% of all scored CVEs.
What is the CVSS score of CVE-2026-64642?
CVE-2026-64642 has a CVSS v3 base score of 8.2 (NVD).
How do I remediate CVE-2026-64642?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-64642, 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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