CVE-2026-78631

MEDIUMPre-NVD 5.35.3—
EchelonGraph scoreHIGH confidence

Score 5.3 from GitHub Security Advisory published 2026-09-08. a secondary CVSS source baseline 5.3; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 3 sources updated this week
5.3EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 5.3Exploit: None knownExposed: 0

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

The Okta Hyperdrive Agent writes the decoded SAML bearer assertion to a local application log file at the default log level on every successful MFA completion. This insertion of sensitive information into the log file makes a live authentication credential readable by any local user with access to the log file.

CVSS v3
5.3
EG Score
5.3(high)
EG Risk
24(Track)
EG Risk 24/100SSVC: 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
Severity53% × 45%
Exploitation0% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
1%
KEV
Not listed

Published

September 8, 2026

Last Modified

September 10, 2026

Advisory Details (1)

Auto-updated Sep 9, 2026
No patch confirmed yet.
generic

Improper Restriction of Sensitive Information in Okta Hyperdrive Agent Logging CVE-2026-78631 - Sep 8, 2026

https://trust.okta.com/security-advisories/improper-restriction-of-sensitive-information-in-okta-hyperdrive-agent-logging-cve-2026-78631

Vendor Advisories for CVE-2026-78631(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 18× 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. 2026-09-20 08:16 UTCEG score recompute
  2. 2026-09-20 08:16 UTCGHSA enrichment
  3. 2026-09-19 06:29 UTCEG score recompute
  4. 2026-09-19 06:29 UTCGHSA enrichment
  5. 2026-09-18 19:28 UTCEPSS rescore
  6. 2026-09-18 04:42 UTCEG score recompute
  7. 2026-09-18 04:42 UTCGHSA enrichment
  8. 2026-09-17 02:55 UTCEG score recompute
  9. 2026-09-17 02:55 UTCGHSA enrichment
  10. 2026-09-16 14:08 UTCEPSS rescore
  11. 2026-09-16 05:15 UTCEPSS rescore
  12. 2026-09-16 00:41 UTCEG score recompute
  13. 2026-09-16 00:41 UTCGHSA enrichment
  14. 2026-09-15 03:12 UTCEPSS rescore
  15. 2026-09-15 03:12 UTCEPSS rescore
  16. 2026-09-14 22:43 UTCGHSA enrichment
  17. 2026-09-13 20:57 UTCEG score recompute
  18. 2026-09-13 20:57 UTCGHSA enrichment
  19. 2026-09-12 19:11 UTCGHSA enrichment
  20. 2026-09-11 17:24 UTCEG score recompute
  21. 2026-09-11 17:24 UTCGHSA enrichment
  22. 2026-09-11 14:53 UTCEPSS rescore
  23. 2026-09-11 14:53 UTCEPSS rescore
  24. 2026-09-10 15:24 UTCEG score recompute
  25. 2026-09-10 15:24 UTCGHSA enrichment
Show 7 more
  1. 2026-09-10 14:45 UTCEG score recompute
  2. 2026-09-10 14:45 UTCGHSA enrichment
  3. 2026-09-09 16:08 UTCEG score recompute
  4. 2026-09-09 16:08 UTCGHSA enrichment
  5. 2026-09-08 21:35 UTCEG score recompute
  6. 2026-09-08 20:30 UTCEG score recompute
  7. 2026-09-08 20:29 UTCMITRE cvelistV5first tracked

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-78631?
CVE-2026-78631 is a medium vulnerability published on September 8, 2026. The Okta Hyperdrive Agent writes the decoded SAML bearer assertion to a local application log file at the default log level on every successful MFA completion. This insertion of sensitive information into the log file makes a live authentication credential readable by any local user with access to…
When was CVE-2026-78631 disclosed?
CVE-2026-78631 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-2026-78631 actively exploited?
CVE-2026-78631 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 99.0% of all scored CVEs.
What is the CVSS score of CVE-2026-78631?
CVE-2026-78631 has a CVSS v3 base score of 5.3 (NVD).
How do I remediate CVE-2026-78631?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-78631, 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

Explore the affected products and dependency analysis for CVE-2026-78631

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