Low severity · published Sep 30, 2026
CVE-2026-100264
In JetBrains YouTrack before 2026.2.18991 stored SMTP server credentials could be disclosed by changing the server host
2.7
CVSS
0.2%
EPSS
No
On KEV
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:N/A:N
Attack vector
Network
Complexity
Low
Privileges
High
User interaction
None
Confidentiality
Low
Integrity
None
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.2% · higher than 13% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
YO
YouTrack · JetBrains
before 2026.2.18991 · source: vendor, NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-100264
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-100264
www.jetbrains.com
https://www.jetbrains.com/privacy-security/issues-fixed/
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