Vulnerability · Published Sep 21, 2026 · Assigned by GitHub_M

CVE-2026-77523MaxKB: Cross-workspace model parameter form write

High 7.4

In plain English

A high-severity authorization bypass via user-controlled key in MaxKB from 1Panel-dev. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.3% (higher than 18% of all known vulnerabilities).

Severity (CVSS 3.1)7.4High

Exploit odds (30 days)0.3%top 82.2% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

Official description

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.

Affected products (as reported)

Vendor	Product	Versions
1Panel-dev	MaxKB	<= 2.10.3-lts

Weakness: CWE-639 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:L

References

https://github.com/1Panel-dev/MaxKB/security/advisories/GHSA-g888-8cvh-9284 x_refsource_CONFIRM