Auth bypass in Thm Feedbacksystem

CVE-2023-27485

thmmniii/fbs-core is an open source feedback system for students. In versions prior to 1.5.3 when querying `subresults`, it is possible to query `subresults` from other users due to insufficient authorisation. This is only possible for logged-in users and it is not possible to associate the subresults with a specific user. This bug was fixed in commit `f1ae67d8bb2`and released with version 1.5.3. Users are advised to upgrade. There are no known workarounds for this issue.

Vulnerability class: Broken Access Control

EPSS: 0.005 (40.3th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 4.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N.

Affected products

Weakness classification (CWE)

References

Frequently asked questions

What is CVE-2023-27485?
CVE-2023-27485 is a medium-severity vulnerability in Thm Feedbacksystem, classified under Incorrect Authorization. CVSS score: 4.3/10. Published 2023-03-07.
How severe is CVE-2023-27485?
Medium severity. CVSS v3 base score is 4.3 out of 10.