CVE-2026-103491
In JetBrains YouTrack before 2026.2.19422 iDOR in the issue activities API allowed reading restricted issues
JetBrains YouTrack
CVSS
6.5MediumExploitationNo known exploitationNot in CISA KEV, which does not prove it is unexploitedCISA KEV
Exploit odds (EPSS)0.20%Chance of exploitation activity in the next 30 days, higher than 9% of CVEs. Scored 23 Oct 2026FIRST EPSS
What fixes it
- 2026.2.19422YouTrackCVE List
A fixed version on one release line is not the upgrade target for every line. Check your exact version and any vendor backports.
Affected versions 1
- YouTrackaffected: all versions before 2026.2.19422CVE List