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Advisory record · GHSA-2gh4-jmwq-rr8w

piccolo-admin has a privilege escalation issue - admin to superuser via session-token disclosure in GET /api/tables/sessions/.

CVSS 8.8 HighEPSS 0.0056 · 47th percentile

Published by the GitHub Advisory Database at 28 Aug 2026, 18:14 UTC. agentprime has not analysed this yet, so whether it affects any app is not known.

PackageEcosystemAffectedFixed in
piccolo-adminPyPI<1.14.01.14.0
Identifiers
GHSA-2gh4-jmwq-rr8w · CVE-2026-55485 · PYSEC-2026-3882
Weakness (CWE)
CWE-200 · CWE-269 · CWE-863
Tags
Published
28 Aug 2026
Updated
10 Sept 2026

Machine-written summary

Summary written by Claude Haiku from the source advisory. Not reviewed by a person.

piccolo-admin before 1.14.0 lets non-superuser admins read other users' live session tokens via GET, including superuser tokens. An attacker can replay a stolen token to become superuser. Upgrade to piccolo-admin 1.14.0; until then, do not expose the Sessions table in create_admin.

Written 1 Nov 2026.

Not analysed yet

We haven’t published our analysis of this Advisory yet. Once a person has reviewed it, this page will say what’s vulnerable, what has to be true for your app to be affected, and how to check.

Severity and exploitation

ScoreRatingCVSSVectorSource
8.8 High 3.1 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H CNA (GitHub_M)
  • CISA KEV Not listed.
  • EPSS 0.0056, the 47th percentile, on 12 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

Timeline

  1. 31 Oct 2026, 14:10 UTC First seen by agentprime
  2. 31 Oct 2026, 14:10 UTC Confirmed by OSV

Sources

Facts on this page come from the GitHub Advisory Database (CC-BY 4.0), OSV and the other sources listed, as published. We don’t reproduce full advisory descriptions, which can contain exploit code.