CVE-2026-86497

MEDIUMPre-NVD 6.86.8—
EchelonGraph scoreHIGH confidence

Score 6.8 from GitHub Security Advisory published 2026-09-07. a secondary CVSS source baseline 6.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 3 sources updated this week
6.8EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 6.8Exploit: None knownExposed: 0

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

In JetBrains YouTrack before 2026.2.18769 changing a mailbox host without re-authentication allowed a project administrator to exfiltrate stored mailbox credentials

CVSS v3
6.8
EG Score
6.8(high)
EG Risk
31(Track)
EG Risk 31/100SSVC: 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
Severity68% × 45%
Exploitation0% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
23%
KEV
Not listed

Published

September 7, 2026

Last Modified

September 8, 2026

Advisory Details (1)

Auto-updated Sep 7, 2026
No patch confirmed yet.
generic

Fixed security issues

https://www.jetbrains.com/privacy-security/issues-fixed/

Vendor Advisories for CVE-2026-86497(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 17× in last 7d / 36× 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. 2026-09-18 21:21 UTCEG score recompute
  2. 2026-09-18 21:21 UTCGHSA enrichment
  3. 2026-09-18 19:28 UTCEPSS rescore
  4. 2026-09-17 20:20 UTCEG score recompute
  5. 2026-09-17 20:20 UTCGHSA enrichment
  6. 2026-09-17 19:32 UTCEPSS rescore
  7. 2026-09-16 18:20 UTCEG score recompute
  8. 2026-09-16 18:19 UTCGHSA enrichment
  9. 2026-09-16 14:09 UTCEPSS rescore
  10. 2026-09-16 05:15 UTCEPSS rescore
  11. 2026-09-15 16:44 UTCEG score recompute
  12. 2026-09-15 16:44 UTCGHSA enrichment
  13. 2026-09-15 03:12 UTCEPSS rescore
  14. 2026-09-15 03:12 UTCEPSS rescore
  15. 2026-09-14 16:38 UTCEG score recompute
  16. 2026-09-14 16:38 UTCGHSA enrichment
  17. 2026-09-13 16:32 UTCGHSA enrichment
  18. 2026-09-12 16:26 UTCEG score recompute
  19. 2026-09-12 16:26 UTCGHSA enrichment
  20. 2026-09-11 16:20 UTCEG score recompute
  21. 2026-09-11 16:20 UTCGHSA enrichment
  22. 2026-09-11 14:53 UTCEPSS rescore
  23. 2026-09-11 14:53 UTCEPSS rescore
  24. 2026-09-10 16:14 UTCEG score recompute
  25. 2026-09-10 16:14 UTCGHSA enrichment
Show 11 more
  1. 2026-09-09 16:05 UTCEG score recompute
  2. 2026-09-09 16:05 UTCGHSA enrichment
  3. 2026-09-08 22:01 UTCEPSS rescore
  4. 2026-09-08 15:52 UTCGHSA enrichment
  5. 2026-09-08 11:40 UTCEG score recompute
  6. 2026-09-08 11:39 UTCGHSA enrichment
  7. 2026-09-08 10:57 UTCEG score recompute
  8. 2026-09-08 10:57 UTCGHSA enrichment
  9. 2026-09-07 17:23 UTCEG score recompute
  10. 2026-09-07 16:35 UTCEG score recompute
  11. 2026-09-07 16:35 UTCMITRE cvelistV5first tracked

Frequently asked(5)

What is CVE-2026-86497?
CVE-2026-86497 is a medium vulnerability published on September 7, 2026. In JetBrains YouTrack before 2026.2.18769 changing a mailbox host without re-authentication allowed a project administrator to exfiltrate stored mailbox credentials
When was CVE-2026-86497 disclosed?
CVE-2026-86497 was first published in the National Vulnerability Database on September 7, 2026, with the most recent update on September 8, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-86497 actively exploited?
CVE-2026-86497 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 77.3% of all scored CVEs.
What is the CVSS score of CVE-2026-86497?
CVE-2026-86497 has a CVSS v3 base score of 6.8 (NVD).
How do I remediate CVE-2026-86497?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-86497, 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-2026-86497

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