CVE-2026-42946

HIGHNVD 7.46.5▼
EchelonGraph scoreMEDIUM confidence

Score 6.5 from GitHub Security Advisory (severity: HIGH) published 2026-05-13. NVD baseline CVSS 7.4; sources differ by 0.9.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
7.4
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS: 1%CVSS: 7.4Exploit: NoneExposed: 0

A fix is available — apply it.

A vulnerability exists in the ngx_http_scgi_module and ngx_http_uwsgi_module modules that may result in excessive memory allocation or an over-read of data. When scgi_pass or uwsgi_pass is configured, an unauthenticated attacker with man-in-the-middle (MITM) ability to control responses from an upstream server may be able to read the memory of the NGINX worker process or restart it.  Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated.

CVSS v3
7.4
EG Score
6.5(medium)
EPSS
56.5%
KEV
Not listed

Published

May 13, 2026

Last Modified

June 18, 2026

Advisory Details (1)

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

myF5

https://my.f5.com/manage/s/article/K000161027

Vendor Advisories for CVE-2026-42946(1)

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) @ resolute2026-06-29ubuntu
ubuntunginx-light (1.18.0-0ubuntu1.7+esm1) @ focal2026-06-29ubuntu

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(2)

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

Additional Vendor Advisories

(2)

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 / 64× 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 132 total refreshes for this CVE.

  1. 2026-07-11 08:27 UTCEPSS rescore
  2. 2026-07-09 19:10 UTCEPSS rescore
  3. 2026-07-08 15:16 UTCEPSS rescore
  4. 2026-07-07 13:46 UTCEPSS rescore
  5. 2026-07-06 16:27 UTCEPSS rescore
  6. 2026-07-06 02:23 UTCEPSS rescore
  7. 2026-07-06 02:23 UTCEPSS rescore
  8. 2026-07-05 02:30 UTCEPSS rescore
  9. 2026-07-04 06:31 UTCEPSS rescore
  10. 2026-07-01 15:06 UTCEPSS rescore
  11. 2026-06-30 23:22 UTCEPSS rescore
  12. 2026-06-29 22:33 UTCEG score recompute
  13. 2026-06-29 22:33 UTCVendor advisory
  14. 2026-06-29 22:33 UTCGHSA enrichment
  15. 2026-06-29 14:06 UTCEPSS rescore
  16. 2026-06-28 14:07 UTCEPSS rescore
  17. 2026-06-28 04:56 UTCEPSS rescore
  18. 2026-06-27 23:33 UTCEG score recompute
  19. 2026-06-27 23:33 UTCVendor advisory
  20. 2026-06-27 23:33 UTCGHSA enrichment
  21. 2026-06-27 03:08 UTCEPSS rescore
  22. 2026-06-26 20:32 UTCEG score recompute
  23. 2026-06-26 20:32 UTCVendor advisory
  24. 2026-06-26 20:32 UTCGHSA enrichment
  25. 2026-06-25 19:41 UTCEG score recompute
Show 75 more
  1. 2026-06-25 19:41 UTCVendor advisory
  2. 2026-06-25 19:41 UTCGHSA enrichment
  3. 2026-06-25 13:49 UTCEPSS rescore
  4. 2026-06-25 13:49 UTCEPSS rescore
  5. 2026-06-24 14:05 UTCEPSS rescore
  6. 2026-06-23 21:33 UTCEPSS rescore
  7. 2026-06-22 14:25 UTCEPSS rescore
  8. 2026-06-22 14:25 UTCEPSS rescore
  9. 2026-06-21 14:56 UTCEPSS rescore
  10. 2026-06-21 14:56 UTCEPSS rescore
  11. 2026-06-21 01:59 UTCEPSS rescore
  12. 2026-06-19 19:25 UTCEPSS rescore
  13. 2026-06-18 17:52 UTCEPSS rescore
  14. 2026-06-18 17:52 UTCEPSS rescore
  15. 2026-06-17 17:53 UTCEPSS rescore
  16. 2026-06-17 00:31 UTCEG score recompute
  17. 2026-06-17 00:31 UTCVendor advisory
  18. 2026-06-17 00:31 UTCGHSA enrichment
  19. 2026-06-16 21:07 UTCNVD updateCVSS v3 → 7.4 · severity → HIGH
  20. 2026-06-16 17:52 UTCEPSS rescore
  21. 2026-06-16 00:56 UTCEG score recompute
  22. 2026-06-16 00:56 UTCVendor advisory
  23. 2026-06-16 00:56 UTCGHSA enrichment
  24. 2026-06-15 17:49 UTCEPSS rescore
  25. 2026-06-15 00:15 UTCEG score recompute
  26. 2026-06-15 00:15 UTCVendor advisory
  27. 2026-06-15 00:15 UTCGHSA enrichment
  28. 2026-06-14 00:40 UTCEG score recompute
  29. 2026-06-14 00:40 UTCVendor advisory
  30. 2026-06-14 00:40 UTCGHSA enrichment
  31. 2026-06-13 23:00 UTCEPSS rescore
  32. 2026-06-13 00:55 UTCEG score recompute
  33. 2026-06-13 00:55 UTCVendor advisory
  34. 2026-06-13 00:54 UTCGHSA enrichment
  35. 2026-06-12 23:12 UTCEPSS rescore
  36. 2026-06-12 23:12 UTCEPSS rescore
  37. 2026-06-12 01:20 UTCEG score recompute
  38. 2026-06-12 01:20 UTCVendor advisory
  39. 2026-06-12 01:20 UTCGHSA enrichment
  40. 2026-06-11 14:00 UTCEPSS rescore
  41. 2026-06-11 01:46 UTCEG score recompute
  42. 2026-06-11 01:46 UTCVendor advisory
  43. 2026-06-11 01:46 UTCGHSA enrichment
  44. 2026-06-10 22:18 UTCEPSS rescore
  45. 2026-06-10 13:22 UTCEPSS rescore
  46. 2026-06-10 13:22 UTCEPSS rescore
  47. 2026-06-10 02:12 UTCEG score recompute
  48. 2026-06-10 02:12 UTCVendor advisory
  49. 2026-06-10 02:12 UTCGHSA enrichment
  50. 2026-06-09 02:38 UTCEG score recompute
  51. 2026-06-09 02:38 UTCVendor advisory
  52. 2026-06-09 02:38 UTCGHSA enrichment
  53. 2026-06-08 14:17 UTCEPSS rescore
  54. 2026-06-08 14:17 UTCEPSS rescore
  55. 2026-06-08 03:04 UTCEG score recompute
  56. 2026-06-08 03:04 UTCVendor advisory
  57. 2026-06-08 03:04 UTCGHSA enrichment
  58. 2026-06-07 15:25 UTCEPSS rescore
  59. 2026-06-07 15:25 UTCEPSS rescore
  60. 2026-06-07 03:30 UTCEG score recompute
  61. 2026-06-07 03:30 UTCVendor advisory
  62. 2026-06-07 03:30 UTCGHSA enrichment
  63. 2026-06-06 13:47 UTCEPSS rescore
  64. 2026-06-06 13:47 UTCEPSS rescore
  65. 2026-06-06 03:56 UTCEG score recompute
  66. 2026-06-06 03:56 UTCVendor advisory
  67. 2026-06-06 03:56 UTCGHSA enrichment
  68. 2026-06-05 22:47 UTCEPSS rescore
  69. 2026-06-05 06:10 UTCEPSS rescore
  70. 2026-06-05 06:10 UTCEPSS rescore
  71. 2026-06-05 04:22 UTCEG score recompute
  72. 2026-06-05 04:22 UTCVendor advisory
  73. 2026-06-05 04:22 UTCGHSA enrichment
  74. 2026-06-04 13:12 UTCEPSS rescore
  75. 2026-06-04 13:12 UTCEPSS rescore

Frequently asked(5)

What is CVE-2026-42946?
CVE-2026-42946 is a high vulnerability published on May 13, 2026. A vulnerability exists in the ngxhttpscgimodule and ngxhttpuwsgimodule modules that may result in excessive memory allocation or an over-read of data. When scgipass or uwsgipass is configured, an unauthenticated attacker with man-in-the-middle (MITM) ability to control responses from an upstream…
When was CVE-2026-42946 disclosed?
CVE-2026-42946 was first published in the National Vulnerability Database on May 13, 2026, with the most recent update on June 18, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-42946 actively exploited?
CVE-2026-42946 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 56.5% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2026-42946?
CVE-2026-42946 has a CVSS v3 base score of 7.4 (NVD). EchelonGraph synthesises NVD + CISA KEV + FIRST EPSS + GHSA into a combined EG score of 6.5.
How do I remediate CVE-2026-42946?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-42946, 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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