Medium severity · published Sep 9, 2026
CVE-2026-11838
Improper Authorization in Yordam Informatics' Library Reservation System
4.3
CVSS
0.3%
EPSS
No
On KEV
Description
Missing authentication for critical function vulnerability in Yordam Informatics Technology Consulting, Training, and Electronic Systems Industry and Trade Inc. Library Reservation System allows Input Data Manipulation.
This issue affects Library Reservation System: before v22.2.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
None
Integrity
Low
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.3% · higher than 24% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
Affected product
LR
Library Reservation System
Yordam Informatics Technology Consulting, Training, and Electronic Systems Industry and Trade Inc.