CVE-2026-40460

MEDIUMPre-NVD 6.56.5—
EchelonGraph scoreMEDIUM confidence

Score 6.5 from GitHub Security Advisory published 2026-05-13. NVD baseline CVSS 6.5; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
6.5
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS: 0%CVSS: 6.5Exploit: NoneExposed: 0

A fix is available — apply it.

When NGINX Plus or NGINX Open Source are configured to use the HTTP/3 QUIC module, an attacker may be able to spoof their source IP address allowing for bypass of authorization or bypass of rate limiting.  Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated.

CVSS v3
6.5
EG Score
6.5(medium)
EPSS
28.8%
KEV
Not listed

Published

May 13, 2026

Last Modified

June 29, 2026

Advisory Details (1)

Auto-updated Jun 14, 2026
No patch confirmed yet.
generic

myF5

https://my.f5.com/manage/s/article/K000161068

Vendor Advisories for CVE-2026-40460(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
ubuntunginx-light (1.28.3-2ubuntu1.2) @ resolute2026-06-27ubuntu
redhatnginx-main-1.30.2-1.hum12026-05-23redhat

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.

Weakness Classification(1)

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

Additional Vendor Advisories

(1)

Vendors that published advisories for this CVE beyond the curated set above. Broader coverage but minimal per-row detail — click through for the original advisory.

Data Freshness Timeline

(refreshed 8× in last 7d / 55× 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 127 total refreshes for this CVE.

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

Related CVEs(same vendor + same CWE)

Frequently asked(5)

What is CVE-2026-40460?
CVE-2026-40460 is a medium vulnerability published on May 13, 2026. When NGINX Plus or NGINX Open Source are configured to use the HTTP/3 QUIC module, an attacker may be able to spoof their source IP address allowing for bypass of authorization or bypass of rate limiting. Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated.
When was CVE-2026-40460 disclosed?
CVE-2026-40460 was first published in the National Vulnerability Database on May 13, 2026, with the most recent update on June 29, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-40460 actively exploited?
CVE-2026-40460 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 28.8% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2026-40460?
CVE-2026-40460 has a CVSS v3 base score of 6.5 (NVD).
How do I remediate CVE-2026-40460?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-40460, 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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