What is CVE-2026-86497?

CVE-2026-86497 is a medium-severity vulnerability in Jetbrains Youtrack, classified under Insertion of Sensitive Information into Sent Data. CVSS score: 6.8/10. Published 2026-09-07.

How severe is CVE-2026-86497?

Medium severity. CVSS v3 base score is 6.8 out of 10.

Vulnerability in Jetbrains Youtrack

CVE-2026-86497

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 metric

CVSS v3 base score 6.8 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:N/A:N.

Affected products

Jetbrains Youtrack

Weakness classification (CWE)

CWE-201 — Insertion of Sensitive Information into Sent Data

References

cve@jetbrains.com

Frequently asked questions

What is CVE-2026-86497?: CVE-2026-86497 is a medium-severity vulnerability in Jetbrains Youtrack, classified under Insertion of Sensitive Information into Sent Data. CVSS score: 6.8/10. Published 2026-09-07.
How severe is CVE-2026-86497?: Medium severity. CVSS v3 base score is 6.8 out of 10.