CVE-2025-27101 HIGH

CVE-2025-27101: Broken Access Control in Opal filesystem's copy functionality exposes all user data

Vendor Obiba
Product opal
Weakness CWE-22 · Path traversal
Published March 11, 2025
Last update March 12, 2025

CVSS base score

7.3/10
Attack vector Network
Attack complexity Low
Privileges required Low
User interaction None
Confidentiality
Integrity

CVSS vector

CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N/E:P

What the vulnerability does

01Description

Opal is OBiBa’s core database application for biobanks or epidemiological studies. Prior to version 5.1.1, when copying any parent directory to a folder in the /temp/ directory, all files in that parent directory are copied, including files which the user should not have access to. All users of the application are impacted, as this is exploitable by any user to reveal all files in the opal filesystem. This also means that low-privilege users such as DataShield users can retrieve the files of other users. Version 5.1.1 contains a patch for the issue.

Key dates

02Disclosure timeline

March 11, 2025 CVE published
March 12, 2025 Record updated