High
Piccolo Admin: Privilege escalation - admin to superuser via session-token disclosure in GET /api/tables/sessions/.
Type: advisorySources: OSV
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.
- Products
- Not specified
- Affected versions
- Not specified
- Fixed versions
- Not specified
- CVEs
- CVE-2026-55485
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 2 Nov 2026, 18:14 UTC · Revision 1
Source evidence
Piccolo Admin: Privilege escalation - admin to superuser via session-token disclosure in GET /api/tables/sessions/.
core-osv · Original sourcePublished 28 Aug 2026, 18:13 UTC
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.
osv:CVE-2026-55485
Complete source record
{
"id": "d2eb2dd3b70e45e3b461eb39a8a93f683743b618b45b3b4f182c3815c7cd8db0",
"url": "https://osv.dev/vulnerability/CVE-2026-55485",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "Piccolo Admin: Privilege escalation - admin to superuser via session-token disclosure in GET /api/tables/sessions/.",
"summary": "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.",
"evidence": "osv:CVE-2026-55485",
"products": [],
"severity": "high",
"structured": {
"id": "CVE-2026-55485",
"aliases": [
"CVE-2026-55485",
"GHSA-2gh4-jmwq-rr8w",
"PYSEC-2026-3882"
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"metrics": [
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"type": "CVSS_V3",
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}
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"modified": "2026-10-28T02:30:22.119153777Z",
"provider": "osv",
"references": [
"https://github.com/piccolo-orm/piccolo_admin/releases/tag/1.14.0",
"https://github.com/piccolo-orm/piccolo_api/releases/tag/1.10.0",
"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/55xxx/CVE-2026-55485.json",
"https://github.com/piccolo-orm/piccolo_admin/security/advisories/GHSA-2gh4-jmwq-rr8w",
"https://nvd.nist.gov/vuln/detail/CVE-2026-55485",
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}
},
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"evidence": "/id"
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"source_id": "core-osv",
"document_id": 488219,
"published_at": "2026-08-28T18:13:23.605+00:00"
}