CVE-2026-84389

LOWPre-NVD 3.13.1—
EchelonGraph scoreHIGH confidence

Score 3.1 from GitHub Security Advisory (severity: LOW) published 2026-09-08. a secondary CVSS source baseline 3.1; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 3 sources updated this week
3.1EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 3.1Exploit: None knownExposed: 0

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

A url redirection to untrusted site ('open redirect') vulnerability in Fortinet FortiSIEM 7.5.0 through 7.5.1, FortiSIEM 7.4.1 through 7.4.2 may allow attacker to execute unauthorized code or commands via

CVSS v3
3.1
EG Score
3.1(high)
EG Risk
14(Track)
EG Risk 14/100SSVC: 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
Severity31% × 45%
Exploitation0% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
3%
KEV
Not listed

Published

September 8, 2026

Last Modified

September 10, 2026

References (1)

Vendor Advisories for CVE-2026-84389(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 11× in last 7d / 27× 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 20:16 UTCEPSS rescore
  2. 2026-09-19 01:17 UTCEG score recompute
  3. 2026-09-19 01:17 UTCGHSA enrichment
  4. 2026-09-18 19:28 UTCEPSS rescore
  5. 2026-09-17 19:32 UTCEPSS rescore
  6. 2026-09-16 14:09 UTCEPSS rescore
  7. 2026-09-16 05:15 UTCEPSS rescore
  8. 2026-09-16 02:25 UTCEG score recompute
  9. 2026-09-16 02:25 UTCGHSA enrichment
  10. 2026-09-15 03:12 UTCEPSS rescore
  11. 2026-09-15 03:12 UTCEPSS rescore
  12. 2026-09-13 03:31 UTCEG score recompute
  13. 2026-09-13 03:31 UTCGHSA enrichment
  14. 2026-09-11 14:53 UTCEPSS rescore
  15. 2026-09-11 14:53 UTCEPSS rescore
  16. 2026-09-10 04:39 UTCEG score recompute
  17. 2026-09-10 04:39 UTCGHSA enrichment
  18. 2026-09-10 04:33 UTCNVD updateCVSS v3 → 3.1
  19. 2026-09-10 04:08 UTCEG score recompute
  20. 2026-09-10 04:07 UTCGHSA enrichment
  21. 2026-09-10 04:00 UTCMITRE cvelistV5CVSS v3 → 2.8
  22. 2026-09-08 19:48 UTCEG score recompute
  23. 2026-09-08 19:48 UTCGHSA enrichment
  24. 2026-09-08 18:13 UTCEG score recompute▲ 0.30
  25. 2026-09-08 17:28 UTCNVD updateCVSS v3 → 3.1
Show 2 more
  1. 2026-09-08 16:52 UTCEG score recompute
  2. 2026-09-08 16:49 UTCMITRE cvelistV5first tracked

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-84389?
CVE-2026-84389 is a low vulnerability published on September 8, 2026. A url redirection to untrusted site ('open redirect') vulnerability in Fortinet FortiSIEM 7.5.0 through 7.5.1, FortiSIEM 7.4.1 through 7.4.2 may allow attacker to execute unauthorized code or commands via <insert attack vector here>
When was CVE-2026-84389 disclosed?
CVE-2026-84389 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-2026-84389 actively exploited?
CVE-2026-84389 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 96.6% of all scored CVEs.
What is the CVSS score of CVE-2026-84389?
CVE-2026-84389 has a CVSS v3 base score of 3.1 (NVD).
How do I remediate CVE-2026-84389?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-84389, 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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