Medium (5.4) in citeum opencti. EPSS 0.5% chance of exploitation in the next 30 days. Fixed in pycti 5.3.0.
A stored Cross-site Scripting (XSS) vulnerability was identified in the Data Import functionality of OpenCTI through 5.2.4. An attacker can abuse the vulnerability to upload a malicious file that will then be executed by a victim when they open the file location.
Severity
CVSS 3.1
5.4 medium
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
EPSS
0.5% chance of exploitation in the next 30 days; higher than 44% of CVEs (scores of 2026-10-31)