Auth bypass in 1panel-Dev Maxkb
CVE-2026-77523
MaxKB is an open-source AI assistant for enterprise. In version 2.10.3-lts and earlier, the model parameter form route authorizes the path workspace but ModelSerializer.ModelParams loads and saves a Model by id alone without including workspace_id in the query. An authenticated user with model read permission in an attacker-controlled workspace can supply a known victim model_id to read or overwrite the victim's model_params_form in another workspace, potentially altering workflows that use those defaults. No fixed version is available as of this review.
Vulnerability class: IDOR (Insecure Direct Object Reference)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.4 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:L.
EPSS exploit prediction
EPSS: 0.003 (17.8th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 18th percentile — 17.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.003 · newest: 0.003 · change: 0.000
Affected products
- 1panel-Dev Maxkb — versions <= 2.10.3-lts
Weakness classification (CWE)
References
Frequently asked questions
- What is CVE-2026-77523?
- CVE-2026-77523 is a high-severity vulnerability in 1panel-Dev Maxkb, classified under Authorization Bypass Through User-Controlled Key. CVSS score: 7.4/10. Published 2026-09-21.
- How severe is CVE-2026-77523?
- High severity. CVSS v3 base score is 7.4 out of 10.