Description
Improper Access Control (IDOR) in the Graylog API, version 2.2.3, which occurs when modifying the user ID in the URL. An authenticated user can access other user's profiles without proper authorization checks. Exploiting this vulnerability allows valid users of the system to be listed and sensitive third-party information to be accessed, such as names, email addresses, internal identifiers, and last activity. The endpoint 'http://<IP>:12900/users/<my_user>' does not implement object-level authorization validations.
References (1)
Core 1
Core References
Third Party Advisory patch
https://www.incibe.es/en/incibe-cert/notices/aviso/multiple-vulnerabilities-graylog
Scores
CVSS v3
6.5
EPSS
0.0021
EPSS Percentile
11.4%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
CISA SSVC
Vulnrichment
Exploitation
none
Automatable
no
Technical Impact
partial
Details
CWE
CWE-639
Status
published
Products (1)
graylog/graylog
2.2.3
Published
Feb 18, 2026
Tracked Since
Feb 18, 2026