CVE-2026-90451

HIGHPre-NVD 8.28.2—
EchelonGraph scoreMEDIUM confidence

This high-severity CVE scores 8.2 under a secondary CVSS source (NVD's own analysis pending). EPSS exploit probability: 0.3%, top 74% 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, secondary
Trending — 3 sources updated this week
8.2EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 8.2Exploit: None knownExposed: 0

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

An example environment-configuration file ships with a fixed, publicly-known secret value used to sign authentication cookies for a bundled packet-analysis component. A deployment that copies this example file into active configuration without running the setup routine that regenerates the value will use the known default, allowing an attacker aware of the default to forge valid authentication cookies for that component.

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%
Exploitation0% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
26%
KEV
Not listed

Published

September 11, 2026

Last Modified

September 18, 2026

References (1)

Vendor Advisories for CVE-2026-90451(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 30× in last 7d / 33× 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. 2026-09-19 08:26 UTCGHSA enrichment
  2. 2026-09-18 19:48 UTCEG score recompute
  3. 2026-09-18 19:48 UTCGHSA enrichment
  4. 2026-09-18 19:28 UTCEPSS rescore
  5. 2026-09-18 08:14 UTCGHSA enrichment
  6. 2026-09-17 19:37 UTCEG score recompute
  7. 2026-09-17 19:37 UTCGHSA enrichment
  8. 2026-09-17 19:32 UTCEPSS rescore
  9. 2026-09-17 04:38 UTCGHSA enrichment
  10. 2026-09-16 16:00 UTCEG score recompute
  11. 2026-09-16 16:00 UTCGHSA enrichment
  12. 2026-09-16 14:09 UTCEPSS rescore
  13. 2026-09-16 05:15 UTCEPSS rescore
  14. 2026-09-16 03:23 UTCGHSA enrichment
  15. 2026-09-15 14:46 UTCEG score recompute
  16. 2026-09-15 14:46 UTCGHSA enrichment
  17. 2026-09-15 03:12 UTCEPSS rescore
  18. 2026-09-15 02:08 UTCGHSA enrichment
  19. 2026-09-14 13:29 UTCEG score recompute
  20. 2026-09-14 13:29 UTCGHSA enrichment
  21. 2026-09-14 13:10 UTCEG score recompute
  22. 2026-09-14 13:10 UTCGHSA enrichment
  23. 2026-09-14 00:56 UTCEG score recompute
  24. 2026-09-14 00:56 UTCGHSA enrichment
  25. 2026-09-13 16:48 UTCEPSS rescore
Show 8 more
  1. 2026-09-13 12:19 UTCGHSA enrichment
  2. 2026-09-12 23:42 UTCEG score recompute
  3. 2026-09-12 23:42 UTCGHSA enrichment
  4. 2026-09-12 15:02 UTCEPSS rescore
  5. 2026-09-12 11:04 UTCGHSA enrichment
  6. 2026-09-11 22:26 UTCEG score recompute
  7. 2026-09-11 21:59 UTCEG score recompute
  8. 2026-09-11 21:58 UTCMITRE cvelistV5first tracked

Frequently asked(5)

What is CVE-2026-90451?
CVE-2026-90451 is a high vulnerability published on September 11, 2026. An example environment-configuration file ships with a fixed, publicly-known secret value used to sign authentication cookies for a bundled packet-analysis component. A deployment that copies this example file into active configuration without running the setup routine that regenerates the value…
When was CVE-2026-90451 disclosed?
CVE-2026-90451 was first published in the National Vulnerability Database on September 11, 2026, with the most recent update on September 18, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-90451 actively exploited?
CVE-2026-90451 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0% probability of exploitation in the next 30 days, which ranks it in the top 73.9% of all scored CVEs.
What is the CVSS score of CVE-2026-90451?
CVE-2026-90451 has a CVSS v3 base score of 8.2 (NVD).
How do I remediate CVE-2026-90451?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-90451, 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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