CVE-2026-42571: Pelicanplatform Pelican

Critical severity, CVSS 9.0. EPSS: 0.4% chance of exploitation in the next 30 days.

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.

Affected products

• Pelicanplatform Pelican: from 7.21.0, before 7.21.5 (fixed in 7.21.5); from 7.22.0, before 7.22.3 (fixed in 7.22.3); from 7.23.0, before 7.23.3 (fixed in 7.23.3); from 7.24.0, before 7.24.2 (fixed in 7.24.2)

Published 2026-05-09. Last modified 2026-07-24.