CVE-2026-90450

MEDIUMPre-NVD 4.34.3
EchelonGraph scoreMEDIUM confidence

“—” beside the score: it is equal to the CVSS score beside it.

Score 4.3 from GitHub Security Advisory published 2026-09-12. A secondary CVSS source baseline 4.3; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: EPSS, GitHub Security Advisory, a secondary CVSS source
Trending — 3 sources updated this week
4.3EG
EchelonGraph verdictMonitorRemediate within your standard update timelines (the SSVC decision on this page).
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0.2%CVSS: 4.3Exploit: None knownExposed services: Not assessed

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

The application's role-authorization lookup defaults to granting access when a request handler's name is not present in its table of role requirements, rather than defaulting to deny. Any request handler that is not explicitly registered in this table is reachable by any authenticated user regardless of their assigned role, and any newly added handler is fail-open by default until explicitly added to the table.

CVSS v3
4.3
EG Score
4.3MEDIUMmedium confidence
EG Risk
19
EG Risk 19/100

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 (value × EchelonGraph’s weight)
Severity43% × 45%
The EG Score, 4.3 of 10.
Exploitation0.2% × 40%
FIRST EPSS: the 30-day exploitation probability when EchelonGraph scored this CVE.
Automatability0% × 15%
CISA's SSVC Automatable value: no (Vulnrichment).
SSVC (CISA's decision table, applied by EchelonGraph): Track at every mission impact level.
Exploitation none (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). All three are CISA's SSVC values (Vulnrichment). EchelonGraph applied CISA's decision table to them; CISA publishes SSVC inputs and the table, not a decision for each CVE.
Action: No fix is confirmed yet. Restrict network exposure of the affected system or apply the vendor's mitigation within your standard update timelines, and watch the vendor's advisory for the fix.
EPSS PROB
0.2%
EPSS %ILE
6th
KEV
Not listed

SSVC (CISA's decision table, applied by EchelonGraph)Track at every mission impact level.

No fix is confirmed yet. Restrict network exposure of the affected system or apply the vendor's mitigation within your standard update timelines, and watch the vendor's advisory for the fix.

Exploitation none (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). All three are CISA's SSVC values (Vulnrichment). EchelonGraph applied CISA's decision table to them; CISA publishes SSVC inputs and the table, not a decision for each CVE. Mission impact is CISA's Mission & Well-being decision point, and only you can judge it. CISA's table makes it high when Mission Prevalence is Essential — the vulnerable component "directly provides capabilities that constitute at least one MEF for at least one entity" (MEF: mission essential function) — or when Public Well-Being Impact is Irreversible: "multiple fatalities are likely", the cyber-physical system "is likely lost or destroyed", "extreme or serious externalities" are imposed on other parties, or social systems such as elections or the financial grid "are destabilized and potentially collapse". CISA's decision table

BOD 26-04 (CISA's remediation timeline, Table 1)60 days if the affected system is publicly exposed; Fix on system upgrade if it is not.

In CISA KEV no (CISA's KEV catalog) · Automatable no (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). Whether your system is publicly exposed is yours to answer. BOD 26-04 binds US Federal Civilian Executive Branch agencies; for anyone else it is CISA's published timeline, a reference rather than an obligation. The directive · how EchelonGraph applies it

Published

September 11, 2026

Last Modified

October 2, 2026

References (2)

Vendor Advisories for CVE-2026-90450(1)

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

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 26× in last 7d / 100× in last 30d)

Each row is a time one of our pipelines fetched, updated or re-scored this CVE. 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. An arrow marks a change the record states ("CVSS v3 → 9.1"); EPSS and GHSA rows show the values recorded at that time, not what changed (EPSS values are rounded; hover one for the exact figures). Most recent first.

Showing the most recent 99 of 103 refreshes on record for this CVE.

A repeat, a row identical to one the same pipeline wrote less than 10 seconds earlier, is not a separate refresh and is not counted. 1 repeat row among the latest 100 is merged into the row it repeats. The 4 oldest rows on record are not shown and were not checked, so the counts can still include repeats.

  1. 2026-10-12 09:12 UTCEG score recompute
  2. 2026-10-12 09:11 UTCGHSA enrichmentGHSA-47x5-rf97-8ggr · GitHub CVSS 4.3
  3. 2026-10-11 19:14 UTCEG score recompute
  4. 2026-10-11 16:30 UTCEG score recompute
  5. 2026-10-11 13:50 UTCEPSS rescoreEPSS 0.2% · 6th percentile
  6. 2026-10-11 13:45 UTCEG score recompute
  7. 2026-10-11 06:46 UTCEG score recompute
  8. 2026-10-11 06:45 UTCGHSA enrichmentGHSA-47x5-rf97-8ggr · GitHub CVSS 4.3
  9. 2026-10-10 20:00 UTCEPSS rescoreEPSS 0.2% · 6th percentile
  10. 2026-10-10 05:22 UTCEG score recompute
  11. 2026-10-10 05:21 UTCGHSA enrichmentGHSA-47x5-rf97-8ggr · GitHub CVSS 4.3
  12. 2026-10-09 20:08 UTCEPSS rescoreEPSS 0.2% · 6th percentile
  13. 2026-10-09 07:36 UTCEG score recompute
  14. 2026-10-09 07:36 UTCGHSA enrichmentGHSA-47x5-rf97-8ggr · GitHub CVSS 4.3
  15. 2026-10-08 17:14 UTCEPSS rescoreEPSS 0.2% · 6th percentile
  16. 2026-10-08 09:48 UTCEG score recompute
  17. 2026-10-08 09:48 UTCGHSA enrichmentGHSA-47x5-rf97-8ggr · GitHub CVSS 4.3
  18. 2026-10-07 23:48 UTCEPSS rescoreEPSS 0.2% · 6th percentile
  19. 2026-10-07 12:03 UTCEG score recompute
  20. 2026-10-07 12:02 UTCGHSA enrichmentGHSA-47x5-rf97-8ggr · GitHub CVSS 4.3
  21. 2026-10-06 15:18 UTCEPSS rescoreEPSS 0.2% · 6th percentile
  22. 2026-10-06 14:07 UTCEG score recompute
  23. 2026-10-06 14:07 UTCGHSA enrichmentGHSA-47x5-rf97-8ggr · GitHub CVSS 4.3
  24. 2026-10-05 17:44 UTCEPSS rescoreEPSS 0.2% · 6th percentile
  25. 2026-10-05 16:21 UTCEG score recompute
Show 74 more
  1. 2026-10-05 16:21 UTCGHSA enrichmentGHSA-47x5-rf97-8ggr · GitHub CVSS 4.3
  2. 2026-10-04 23:22 UTCEPSS rescoreEPSS 0.2% · 6th percentile
  3. 2026-10-04 18:02 UTCGHSA enrichmentGHSA-47x5-rf97-8ggr · GitHub CVSS 4.3
  4. 2026-10-03 20:11 UTCEG score recompute
  5. 2026-10-03 20:11 UTCGHSA enrichmentGHSA-47x5-rf97-8ggr · GitHub CVSS 4.3
  6. 2026-10-02 22:21 UTCEG score recompute
  7. 2026-10-02 22:21 UTCGHSA enrichmentGHSA-47x5-rf97-8ggr
  8. 2026-10-02 21:25 UTCEG score recompute▼ 1.00
  9. 2026-10-02 21:24 UTCGHSA enrichmentGHSA-47x5-rf97-8ggr
  10. 2026-10-02 21:20 UTCMITRE cvelistV5CVSS v3 → 4.3
  11. 2026-10-02 20:48 UTCEG score recompute
  12. 2026-10-02 20:48 UTCGHSA enrichmentGHSA-47x5-rf97-8ggr
  13. 2026-10-01 22:33 UTCEG score recompute
  14. 2026-10-01 22:33 UTCGHSA enrichmentGHSA-47x5-rf97-8ggr
  15. 2026-10-01 19:51 UTCEPSS rescoreEPSS 0.4% · 26th percentile
  16. 2026-10-01 00:47 UTCEG score recompute
  17. 2026-10-01 00:47 UTCGHSA enrichmentGHSA-47x5-rf97-8ggr
  18. 2026-09-30 15:04 UTCEPSS rescoreEPSS 0.4% · 26th percentile
  19. 2026-09-30 01:38 UTCEG score recompute
  20. 2026-09-30 01:38 UTCGHSA enrichmentGHSA-47x5-rf97-8ggr
  21. 2026-09-28 20:17 UTCEG score recompute
  22. 2026-09-28 20:17 UTCGHSA enrichmentGHSA-47x5-rf97-8ggr
  23. 2026-09-28 13:52 UTCEPSS rescoreEPSS 0.4% · 26th percentile
  24. 2026-09-27 21:35 UTCEG score recompute
  25. 2026-09-27 21:35 UTCGHSA enrichmentGHSA-47x5-rf97-8ggr
  26. 2026-09-27 13:49 UTCEPSS rescoreEPSS 0.4% · 26th percentile
  27. 2026-09-26 23:49 UTCEG score recompute
  28. 2026-09-26 23:49 UTCGHSA enrichmentGHSA-47x5-rf97-8ggr
  29. 2026-09-26 15:59 UTCEPSS rescoreEPSS 0.4% · 26th percentile
  30. 2026-09-26 02:03 UTCEG score recompute
  31. 2026-09-26 02:03 UTCGHSA enrichmentGHSA-47x5-rf97-8ggr
  32. 2026-09-25 04:10 UTCEG score recompute
  33. 2026-09-25 04:10 UTCGHSA enrichmentGHSA-47x5-rf97-8ggr
  34. 2026-09-24 14:04 UTCEPSS rescoreEPSS 0.4% · 25th percentile
  35. 2026-09-24 06:24 UTCEG score recompute
  36. 2026-09-24 06:24 UTCGHSA enrichmentGHSA-47x5-rf97-8ggr
  37. 2026-09-23 17:54 UTCEPSS rescoreEPSS 0.2% · 12th percentile
  38. 2026-09-23 08:38 UTCEG score recompute
  39. 2026-09-23 08:38 UTCGHSA enrichmentGHSA-47x5-rf97-8ggr
  40. 2026-09-22 16:01 UTCEPSS rescoreEPSS 0.2% · 12th percentile
  41. 2026-09-22 10:52 UTCEG score recompute
  42. 2026-09-22 10:52 UTCGHSA enrichmentGHSA-47x5-rf97-8ggr
  43. 2026-09-21 21:09 UTCEPSS rescoreEPSS 0.2% · 12th percentile
  44. 2026-09-21 13:07 UTCEG score recompute
  45. 2026-09-21 13:07 UTCGHSA enrichmentGHSA-47x5-rf97-8ggr
  46. 2026-09-20 20:16 UTCEPSS rescoreEPSS 0.2% · 12th percentile
  47. 2026-09-20 15:21 UTCGHSA enrichmentGHSA-47x5-rf97-8ggr
  48. 2026-09-19 17:34 UTCEG score recompute
  49. 2026-09-19 17:34 UTCGHSA enrichmentGHSA-47x5-rf97-8ggr
  50. 2026-09-18 19:48 UTCEG score recompute
  51. 2026-09-18 19:48 UTCGHSA enrichmentGHSA-47x5-rf97-8ggr
  52. 2026-09-18 19:28 UTCEPSS rescoreEPSS 0.2% · 12th percentile
  53. 2026-09-18 08:33 UTCEG score recompute
  54. 2026-09-18 08:32 UTCGHSA enrichmentGHSA-47x5-rf97-8ggr
  55. 2026-09-17 19:32 UTCEPSS rescoreEPSS 0.2% · 12th percentile
  56. 2026-09-17 10:46 UTCEG score recompute
  57. 2026-09-17 10:46 UTCGHSA enrichmentGHSA-47x5-rf97-8ggr
  58. 2026-09-16 14:09 UTCEPSS rescoreEPSS 0.2% · 12th percentile
  59. 2026-09-16 13:00 UTCEG score recompute
  60. 2026-09-16 12:59 UTCGHSA enrichmentGHSA-47x5-rf97-8ggr
  61. 2026-09-16 05:15 UTCEPSS rescoreEPSS 0.2% · 12th percentile
  62. 2026-09-15 15:14 UTCEG score recompute
  63. 2026-09-15 15:14 UTCGHSA enrichmentGHSA-47x5-rf97-8ggr
  64. 2026-09-15 03:12 UTCEPSS rescoreEPSS 0.2% · 12th percentile
  65. 2026-09-14 17:28 UTCEG score recompute
  66. 2026-09-14 17:28 UTCGHSA enrichmentGHSA-47x5-rf97-8ggr
  67. 2026-09-14 16:36 UTCEG score recompute
  68. 2026-09-14 16:35 UTCGHSA enrichmentGHSA-47x5-rf97-8ggr
  69. 2026-09-14 15:43 UTCGHSA enrichmentGHSA-47x5-rf97-8ggr
  70. 2026-09-13 17:57 UTCEG score recompute
  71. 2026-09-13 17:57 UTCGHSA enrichmentGHSA-47x5-rf97-8ggr
  72. 2026-09-13 16:48 UTCEPSS rescoreEPSS 0.2% · 12th percentile
  73. 2026-09-12 20:12 UTCEG score recompute
  74. 2026-09-12 20:11 UTCGHSA enrichmentGHSA-47x5-rf97-8ggr

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-90450?
CVE-2026-90450 is a medium-severity vulnerability; its CVE record was published on September 11, 2026. The application's role-authorization lookup defaults to granting access when a request handler's name is not present in its table of role requirements, rather than defaulting to deny. Any request handler that is not explicitly registered in this table is reachable by any authenticated user…
When was the CVE record for CVE-2026-90450 published?
The CVE record for CVE-2026-90450 was published on September 11, 2026. That is the record's publication date; the vulnerability itself may have been made public earlier. EchelonGraph's copy of the record carries a last-modified date of October 2, 2026; the record at its source may have been updated since.
Is CVE-2026-90450 actively exploited?
CVE-2026-90450 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.2% probability of exploitation in the next 30 days (6th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-90450?
CVE-2026-90450 has a CVSS base score of 4.3 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-90450?
No fix for CVE-2026-90450 is confirmed yet. Until one is published, restrict network exposure of the affected system or apply the vendor's mitigation — for example, keep it off the internet or limit it to trusted networks — and watch the vendor's advisory for the fix. The vendor advisories EchelonGraph has for CVE-2026-90450 are linked in the Vendor Advisories panel on this page.

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