CVE-2026-42571 CRITICAL

CVE-2026-42571: Privilege Escalation Attack affecting Pelican Web UI

Vendor Pelicanplatform
Product pelican
Weakness CWE-863 · Incorrect authorization
Published May 9, 2026
Last update May 12, 2026

CVSS base score

9.0/10
Attack vector Network
Attack complexity Low
Privileges required Low
User interaction None
Confidentiality
Integrity

CVSS vector

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

What the vulnerability does

01Description

Pelican is a platform for creating data federations. From versions 7.21.0 to before 7.21.5, 7.22.0 to before 7.22.3, 7.23.0 to before 7.23.3, and 7.24.0 to before 7.24.2, there is a a privilege escalation vulnerability affecting Pelican's Web User Interface (WebUI). This attack allows any user authenticated to the WebUI via OAuth to gain admin privileges under certain configurations. This issue has been patched in versions 7.21.5, 7.22.3, 7.23.3, and 7.24.2.

Key dates

02Disclosure timeline

May 9, 2026 CVE published
May 12, 2026 Record updated