CVE-2026-78552

MEDIUMPre-NVD 6.06.0—
EchelonGraph scoreHIGH confidence

Score 6.0 from GitHub Security Advisory published 2026-09-08. a secondary CVSS source baseline 6.0; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 3 sources updated this week
6.0EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 6.0Exploit: None knownExposed: 0

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

The Okta Access Gateway does not apply its Lua directive restriction to the application-level custom configuration field. The field is interpolated directly into the nginx server block without inspection, resulting in execution of injected directives.

CVSS v3
6.0
EG Score
6.0(high)
EG Risk
27(Track)
EG Risk 27/100SSVC: 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
Severity60% × 45%
Exploitation0% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
26%
KEV
Not listed

Published

September 8, 2026

Last Modified

September 10, 2026

Advisory Details (1)

Auto-updated Sep 8, 2026
No patch confirmed yet.
generic

Validation Bypass in Okta Access Gateway Custom Directives CVE-2026-78552 - Sep 8, 2026

https://trust.okta.com/security-advisories/validation-bypass-in-okta-access-gateway-custom-directives-cve-2026-78552

Vendor Advisories for CVE-2026-78552(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 16× in last 7d / 32× 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 00:33 UTCEG score recompute
  2. 2026-09-19 00:33 UTCGHSA enrichment
  3. 2026-09-18 19:28 UTCEPSS rescore
  4. 2026-09-17 23:55 UTCEG score recompute
  5. 2026-09-17 23:55 UTCGHSA enrichment
  6. 2026-09-16 22:28 UTCEG score recompute
  7. 2026-09-16 22:28 UTCGHSA enrichment
  8. 2026-09-16 14:08 UTCEPSS rescore
  9. 2026-09-16 05:15 UTCEPSS rescore
  10. 2026-09-15 21:49 UTCEG score recompute
  11. 2026-09-15 21:49 UTCGHSA enrichment
  12. 2026-09-15 03:12 UTCEPSS rescore
  13. 2026-09-15 03:12 UTCEPSS rescore
  14. 2026-09-14 21:10 UTCGHSA enrichment
  15. 2026-09-13 20:23 UTCEG score recompute
  16. 2026-09-13 20:23 UTCGHSA enrichment
  17. 2026-09-12 19:44 UTCEG score recompute
  18. 2026-09-12 19:44 UTCGHSA enrichment
  19. 2026-09-11 19:05 UTCEG score recompute
  20. 2026-09-11 19:05 UTCGHSA enrichment
  21. 2026-09-11 14:53 UTCEPSS rescore
  22. 2026-09-11 14:53 UTCEPSS rescore
  23. 2026-09-10 18:23 UTCEG score recompute
  24. 2026-09-10 18:23 UTCGHSA enrichment
  25. 2026-09-10 18:00 UTCEG score recompute
Show 7 more
  1. 2026-09-10 18:00 UTCGHSA enrichment
  2. 2026-09-09 23:02 UTCGHSA enrichment
  3. 2026-09-08 21:35 UTCEG score recompute
  4. 2026-09-08 21:35 UTCGHSA enrichment
  5. 2026-09-08 20:32 UTCEG score recompute
  6. 2026-09-08 20:15 UTCEG score recompute
  7. 2026-09-08 20:14 UTCMITRE cvelistV5first tracked

Frequently asked(5)

What is CVE-2026-78552?
CVE-2026-78552 is a medium vulnerability published on September 8, 2026. The Okta Access Gateway does not apply its Lua directive restriction to the application-level custom configuration field. The field is interpolated directly into the nginx server block without inspection, resulting in execution of injected directives.
When was CVE-2026-78552 disclosed?
CVE-2026-78552 was first published in the National Vulnerability Database on September 8, 2026, with the most recent update on September 10, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-78552 actively exploited?
CVE-2026-78552 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 73.7% of all scored CVEs.
What is the CVSS score of CVE-2026-78552?
CVE-2026-78552 has a CVSS v3 base score of 6.0 (NVD).
How do I remediate CVE-2026-78552?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-78552, 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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