CVE-2026-42946

HIGHNVD 7.47.4—
EchelonGraph scoreMEDIUM confidence

This high-severity CVE scores 7.4 under NVD CVSS v3. EPSS exploit probability: 0.9%, top 42% of all CVEs by exploit prediction. GitHub Security Advisory enrichment pending alignment with NVD CVSS.

Triggered by: NVD CVSS baseline
Sources: epss, ghsa, nvd
Trending — 4 sources updated this week
7.4EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 1%CVSS: 7.4Exploit: None knownExposed: 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
7.4(medium)
EG Risk
34(Track)
EG Risk 34/100SSVC: 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
Severity74% × 45%
Exploitation1% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
1%
EPSS %ILE
58%
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) @ resolute2026-08-23ubuntu
ubuntunginx-light (1.10.3-0ubuntu0.16.04.5+esm7) @ xenial2026-08-23ubuntu

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

(8 across 8 ecosystems)
Alpine:v3.21(1)
PackageVulnerable rangeFixed inDependents
nginx—1.26.3-r1—
Alpine:v3.22(1)
PackageVulnerable rangeFixed inDependents
nginx—1.28.3-r1—
Alpine:v3.23(1)
PackageVulnerable rangeFixed inDependents
nginx—1.28.3-r1—
Alpine:v3.24(1)
PackageVulnerable rangeFixed inDependents
nginx—1.30.1-r0—
Debian:11(1)
PackageVulnerable rangeFixed inDependents
nginx1.18.0-6.1 ... 1.18.0-6.1+deb11u5 (6 versions)1.18.0-6.1+deb11u6—
Debian:12(1)
PackageVulnerable rangeFixed inDependents
nginx1.22.1-9 ... 1.22.1-9+deb12u7 (8 versions)1.22.1-9+deb12u8—
Debian:13(1)
PackageVulnerable rangeFixed inDependents
nginx1.26.3-3 ... 1.26.3-3+deb13u5 (6 versions)1.26.3-3+deb13u6—
Debian:14(1)
PackageVulnerable rangeFixed inDependents
nginx1.26.3-3 ... 1.30.0-3 (19 versions)1.30.0-4—

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 11× in last 7d / 93× 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 223 total refreshes for this CVE.

  1. 2026-08-25 13:49 UTCEPSS rescore
  2. 2026-08-23 17:54 UTCEG score recompute
  3. 2026-08-23 17:54 UTCVendor advisory
  4. 2026-08-23 17:54 UTCGHSA enrichment
  5. 2026-08-23 00:19 UTCEPSS rescore
  6. 2026-08-21 23:49 UTCEPSS rescore
  7. 2026-08-20 22:55 UTCEPSS rescore
  8. 2026-08-20 21:28 UTCEG score recompute
  9. 2026-08-20 21:28 UTCVendor advisory
  10. 2026-08-20 21:28 UTCGHSA enrichment
  11. 2026-08-19 17:03 UTCEPSS rescore
  12. 2026-08-18 13:48 UTCEPSS rescore
  13. 2026-08-17 10:41 UTCEG score recompute
  14. 2026-08-17 10:41 UTCVendor advisory
  15. 2026-08-17 10:41 UTCGHSA enrichment
  16. 2026-08-16 14:56 UTCEPSS rescore
  17. 2026-08-16 04:05 UTCEG score recompute
  18. 2026-08-16 04:05 UTCVendor advisory
  19. 2026-08-16 04:05 UTCGHSA enrichment
  20. 2026-08-16 02:14 UTCEPSS rescore
  21. 2026-08-15 01:49 UTCEG score recompute
  22. 2026-08-15 01:49 UTCVendor advisory
  23. 2026-08-15 01:49 UTCGHSA enrichment
  24. 2026-08-15 01:30 UTCEPSS rescore
  25. 2026-08-14 14:12 UTCVendor advisory
Show 75 more
  1. 2026-08-14 14:12 UTCGHSA enrichment
  2. 2026-08-14 02:33 UTCEG score recompute
  3. 2026-08-14 02:33 UTCVendor advisory
  4. 2026-08-14 02:33 UTCGHSA enrichment
  5. 2026-08-13 22:00 UTCEPSS rescore
  6. 2026-08-13 03:30 UTCVendor advisory
  7. 2026-08-13 03:30 UTCGHSA enrichment
  8. 2026-08-12 15:52 UTCEG score recompute
  9. 2026-08-12 15:52 UTCVendor advisory
  10. 2026-08-12 15:52 UTCGHSA enrichment
  11. 2026-08-12 13:51 UTCEPSS rescore
  12. 2026-08-11 15:29 UTCEG score recompute
  13. 2026-08-11 15:29 UTCVendor advisory
  14. 2026-08-11 15:29 UTCGHSA enrichment
  15. 2026-08-11 13:43 UTCEPSS rescore
  16. 2026-08-11 00:57 UTCEG score recompute
  17. 2026-08-11 00:57 UTCVendor advisory
  18. 2026-08-11 00:57 UTCGHSA enrichment
  19. 2026-08-11 00:00 UTCEPSS rescore
  20. 2026-08-10 12:50 UTCVendor advisory
  21. 2026-08-10 12:50 UTCGHSA enrichment
  22. 2026-08-10 01:12 UTCEG score recompute
  23. 2026-08-10 01:12 UTCVendor advisory
  24. 2026-08-10 01:12 UTCGHSA enrichment
  25. 2026-08-09 13:46 UTCEPSS rescore
  26. 2026-08-09 13:34 UTCVendor advisory
  27. 2026-08-09 13:34 UTCGHSA enrichment
  28. 2026-08-09 01:56 UTCEG score recompute
  29. 2026-08-09 01:56 UTCVendor advisory
  30. 2026-08-09 01:56 UTCGHSA enrichment
  31. 2026-08-08 16:37 UTCEPSS rescore
  32. 2026-08-08 07:53 UTCVendor advisory
  33. 2026-08-08 07:53 UTCGHSA enrichment
  34. 2026-08-07 20:15 UTCEG score recompute
  35. 2026-08-07 20:15 UTCVendor advisory
  36. 2026-08-07 20:15 UTCGHSA enrichment
  37. 2026-08-07 08:37 UTCVendor advisory
  38. 2026-08-07 08:37 UTCGHSA enrichment
  39. 2026-08-06 20:58 UTCEG score recompute
  40. 2026-08-06 20:58 UTCVendor advisory
  41. 2026-08-06 20:58 UTCGHSA enrichment
  42. 2026-08-06 13:46 UTCEPSS rescore
  43. 2026-08-06 09:20 UTCVendor advisory
  44. 2026-08-06 09:20 UTCGHSA enrichment
  45. 2026-08-05 21:42 UTCEG score recompute
  46. 2026-08-05 21:42 UTCVendor advisory
  47. 2026-08-05 21:42 UTCGHSA enrichment
  48. 2026-08-05 19:17 UTCEPSS rescore
  49. 2026-08-04 15:10 UTCEPSS rescore
  50. 2026-08-04 10:38 UTCEPSS rescore
  51. 2026-08-03 19:09 UTCEG score recompute
  52. 2026-08-03 19:09 UTCVendor advisory
  53. 2026-08-03 19:09 UTCGHSA enrichment
  54. 2026-08-03 10:36 UTCEPSS rescore
  55. 2026-08-02 20:09 UTCVendor advisory
  56. 2026-08-02 20:09 UTCGHSA enrichment
  57. 2026-08-02 08:31 UTCEG score recompute
  58. 2026-08-02 08:31 UTCVendor advisory
  59. 2026-08-02 08:31 UTCGHSA enrichment
  60. 2026-08-02 02:27 UTCEPSS rescore
  61. 2026-08-01 20:04 UTCEG score recompute
  62. 2026-08-01 20:04 UTCVendor advisory
  63. 2026-08-01 20:03 UTCGHSA enrichment
  64. 2026-08-01 04:16 UTCEPSS rescore
  65. 2026-07-30 16:28 UTCEPSS rescore
  66. 2026-07-30 01:30 UTCEPSS rescore
  67. 2026-07-28 15:36 UTCEPSS rescore
  68. 2026-07-27 14:13 UTCEPSS rescore
  69. 2026-07-26 14:54 UTCEPSS rescore
  70. 2026-07-26 14:54 UTCEPSS rescore
  71. 2026-07-25 14:18 UTCEPSS rescore
  72. 2026-07-24 14:17 UTCEPSS rescore
  73. 2026-07-23 14:18 UTCEPSS rescore
  74. 2026-07-23 03:12 UTCEG score recompute▲ 0.90
  75. 2026-07-22 14:08 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 1% probability of exploitation in the next 30 days, which ranks it in the top 42.0% of all scored CVEs.
What is the CVSS score of CVE-2026-42946?
CVE-2026-42946 has a CVSS v3 base score of 7.4 (NVD).
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

See which npm, PyPI, Go, and Maven packages are affected by CVE-2026-42946

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