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OpenAdvisories
High · 8.8 CVE-2026-55485 EUVD-2026-67858GHSA-2gh4-jmwq-rr8wPYSEC-2026-3882

Piccolo Admin: Privilege escalation - admin to superuser via session-token disclosure in GET /api/tables/sessions/.

Published Aug 28, 2026 · Updated Aug 31, 2026 · Assigned by GitHub_M

Description

Piccolo Admin is an admin interface and content management system for Python, built on top of Piccolo. Prior to 1.14.0, piccolo_admin/endpoints.py uses superuser_validators to block PUT, PATCH, DELETE, and POST requests by non-superusers but permits GET requests to configured user and session tables, while piccolo_api/session_auth/tables.py exposes SessionsBase.token because the token column is not secret. In deployments that add the Sessions and User tables to create_admin, a non-superuser administrator can call GET /api/tables/sessions/, obtain another user's live session token, replay it as the Cookie id value to impersonate a superuser, and permanently set superuser to true on the attacker's own row. This issue is fixed in version 1.14.0.

Affected products

VendorProductAffectedFixed
piccolo-orm piccolo_admin < 1.14.0 —

Affected packages

EcosystemPackageAffectedFixedRecord
PyPI piccolo-admin < 1.14.0 1.14.0 GHSA-2gh4-jmwq-rr8w

References