I, Librarian version 4.9 and earlier contains an Incorrect Access Control vulnerability in ajaxdiscussion.php that can result in any users gaining unauthorized access (read, write and delete) to project discussions.
Severity
CVSS 3.1
9.1 critical
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
EPSS
1.3% chance of exploitation in the next 30 days; higher than 70% of CVEs (scores of 2026-10-31)