Vulnerability · Published Aug 28, 2026 · Assigned by GitHub_M

CVE-2026-55485Piccolo Admin: Privilege escalation - admin to superuser via session-token disclosure in GET /api/tables/sessions/.

High 8.8

In plain English

A high-severity information exposure in piccolo_admin from piccolo-orm. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.6% (higher than 47% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS 3.1)8.8High

Exploit odds (30 days)0.6%top 52.9% of all CVEs

Exploited in the wildNo reportsCISA SSVC: poc

Attack toolingNoneno public tooling known

Official 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 packages & fixed versions

Ecosystem	Package	Fixed in	Advisory
PyPI	piccolo-admin	1.14.0	GHSA-2gh4-jmwq-rr8w
PyPI	piccolo-admin	1.14.0	PYSEC-2026-3882

Affected products (as reported)

Vendor	Product	Versions
piccolo-orm	piccolo_admin	< 1.14.0

Weakness: CWE-200, CWE-269, CWE-863 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

References

https://github.com/piccolo-orm/piccolo_admin/security/advisories/GHSA-2gh4-jmwq-rr8w x_refsource_CONFIRM
https://github.com/piccolo-orm/piccolo_api/pull/331 x_refsource_MISC
https://github.com/piccolo-orm/piccolo_admin/commit/96ddae12baf12288056cbb0cda6f9e8d7e22c86d x_refsource_MISC
https://github.com/piccolo-orm/piccolo_api/commit/520ec2567ae1d2cc417c8c0d1ad0ddc05549a8a4 x_refsource_MISC
https://github.com/piccolo-orm/piccolo_admin/releases/tag/1.14.0 x_refsource_MISC
https://github.com/piccolo-orm/piccolo_api/releases/tag/1.10.0 x_refsource_MISC