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

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2026-55485
StatePUBLISHED
AssignerGitHub_M
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-08-28 20:18:27 UTC
Updated2026-09-09 21:09:13 UTC
DescriptionPiccolo 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.

Risk And Classification

Primary CVSS: v3.1 8.8 HIGH from [email protected]

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

EPSS: 0.003890000 probability, percentile 0.323480000 (date 2026-09-10)

Problem Types: CWE-200 | CWE-269 | CWE-863 | CWE-200 CWE-200: Exposure of Sensitive Information to an Unauthorized Actor | CWE-269 CWE-269: Improper Privilege Management | CWE-863 CWE-863: Incorrect Authorization

VersionSourceTypeScoreSeverityVector
3.1[email protected]Secondary8.8HIGHCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
3.1CNADECLARED8.8HIGHCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

CVSS v3.1 Breakdown

Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Piccolo-orm Piccolo Admin affected < 1.14.0 Not specified

References

ReferenceSourceLinkTags
github.com/piccolo-orm/piccolo_admin/security/advisories/GHSA-2gh4-jmwq-... 134c704f-9b21-4f2e-91b3-4a467353bcc0 github.com
github.com/piccolo-orm/piccolo_api/commit/520ec2567ae1d2cc417c8c0d1ad0dd... [email protected] github.com
github.com/piccolo-orm/piccolo_admin/commit/96ddae12baf12288056cbb0cda6f... [email protected] github.com
github.com/piccolo-orm/piccolo_api/pull/331 [email protected] github.com
github.com/piccolo-orm/piccolo_api/releases/tag/1.10.0 [email protected] github.com
github.com/piccolo-orm/piccolo_admin/releases/tag/1.14.0 [email protected] github.com
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