piccolo-admin has a privilege escalation issue - admin to superuser via session-token disclosure in GET /api/tables/sessions/. — GHSA-2GH4-JMWQ-RR8W

Summary

## Summary `piccolo_admin` uses a helper called `superuser_validators` to gate access to the user and session tables for non-superusers. The helper rejects `PUT`, `PATCH`, `DELETE`, and `POST`, but **does not reject `GET`**. The `sessions` table stores live session tokens **in plaintext**, and the token column is not marked `secret=True`, so it is included in every `GET` response. Any non-superuser admin can…

Timeline

Published by source

2026-08-28

Risk context

• Reported severity or threat level: high.
• Reported CVSS score: 8.8 out of 10.
• Review exposure for the affected product or family: pip: piccolo-admin.

Product

pip: piccolo-admin

What to do

General, cautious steps (verify details in the official source):

• Prioritize patching or mitigation immediately (treat as actively risky).
• Identify affected product versions in your inventory and verify whether you are impacted.
• Apply vendor patches/updates or recommended mitigations as soon as available.
• Read the official advisory for exact affected versions and remediation steps.

Official advisory

• Read the official source
• CVE Record
• NVD

Evidence and provenance

Canonical advisory ID

GHSA-2GH4-JMWQ-RR8W

Source

GitHub

Vendor

GitHub

Published by source

2026-08-28

Last source activity

2026-08-28

Additional identifiers

CVE-2026-55485

Curated by

hlukh.ch

Related advisories and connections

These advisories are connected by shared CVE, product, vendor, source, or time signals.