CVE-2026-55485

HIGHPre-NVD 8.88.8
EchelonGraph scoreLOW confidence

This high-severity CVE scores 8.8 under a secondary CVSS source (NVD's own analysis pending). EPSS exploit-prediction score not yet available (the EPSS model rescores nightly; freshly-published CVEs typically appear within 48 hours). GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).

Triggered by: NVD CVSS baseline
Sources: secondary
8.8EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 8.8Exploit: None knownExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

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.

CVSS v3
8.8
EG Score
8.8(low)
EG Risk
44(Track)
EG Risk 44/100SSVC: Track

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity88% × 45%
Exploitation0% × 40%
Automatability30% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
32%
KEV
Not listed

Published

August 28, 2026

Last Modified

August 28, 2026

Advisory Details (6)

Auto-updated Aug 28, 2026
🔬 Proof of concept available. Patch available. Sources: github_commit, github_release, github, github_pr.
github_release Patch Available

1.10.0

Patch available: piccolo-orm/piccolo_api 1.10.0

https://github.com/piccolo-orm/piccolo_api/releases/tag/1.10.0
github_pr Patch Available

Modernise session table

Patch available: piccolo-orm/piccolo_api 1.10.0 (PR #331 merged 2026-06-19)

https://github.com/piccolo-orm/piccolo_api/pull/331
github_commit Patch Available

commit 520ec2567ae1 (piccolo-orm/piccolo_api)

Patch available: piccolo-orm/piccolo_api 1.10.0 (contains commit 520ec2567ae1)

https://github.com/piccolo-orm/piccolo_api/commit/520ec2567ae1d2cc417c8c0d1ad0ddc05549a8a4
github Patch Available🟡 PoC Available

Privilege escalation - admin to superuser via session-token disclosure in GET /api/tables/sessions/. · Advisory · piccolo-orm/piccolo_admin · GitHub

https://github.com/piccolo-orm/piccolo_admin/security/advisories/GHSA-2gh4-jmwq-rr8w
github_release Patch Available

1.14.0

Patch available: piccolo-orm/piccolo_admin 1.14.0

https://github.com/piccolo-orm/piccolo_admin/releases/tag/1.14.0
github_commit Patch Available

commit 96ddae12baf1 (piccolo-orm/piccolo_admin)

Patch available: piccolo-orm/piccolo_admin 1.14.0 (contains commit 96ddae12baf1)

https://github.com/piccolo-orm/piccolo_admin/commit/96ddae12baf12288056cbb0cda6f9e8d7e22c86d

Vendor Advisories for CVE-2026-55485(1)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Weakness Classification(3)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 3× in last 7d / 3× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

  1. 2026-08-30 01:22 UTCEPSS rescore
  2. 2026-08-28 20:25 UTCEG score recompute
  3. 2026-08-28 19:10 UTCEG score recompute

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-55485?
CVE-2026-55485 is a high vulnerability published on August 28, 2026. Piccolo Admin is an admin interface and content management system for Python, built on top of Piccolo. Prior to 1.14.0, piccoloadmin/endpoints.py uses superuservalidators to block PUT, PATCH, DELETE, and POST requests by non-superusers but permits GET requests to configured user and session tables,…
When was CVE-2026-55485 disclosed?
CVE-2026-55485 was first published in the National Vulnerability Database on August 28, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-55485 actively exploited?
CVE-2026-55485 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0% probability of exploitation in the next 30 days, which ranks it in the top 68.1% of all scored CVEs.
What is the CVSS score of CVE-2026-55485?
CVE-2026-55485 has a CVSS v3 base score of 8.8 (NVD). The EG score is currently aggregating — additional source signals are being incorporated as they become available..
How do I remediate CVE-2026-55485?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-55485, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

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