Vulnerability · Published Sep 21, 2026 · Assigned by GitHub_M

CVE-2026-77517MaxKB cross-knowledge IDOR lets a normal user read and modify documents and paragraphs in another knowledge base

Medium 5.4

In plain English

A medium-severity authorization bypass via user-controlled key in MaxKB from 1Panel-dev. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 14% of all known vulnerabilities).

Severity (CVSS 3.1)5.4Medium

Exploit odds (30 days)0.2%top 86.1% of all CVEs

Exploited in the wildNo reportsCISA SSVC: poc

Attack toolingNoneno public tooling known

Official description

MaxKB is an open-source AI assistant for enterprise. From version 2.0.0 through 2.10.2-lts, document and paragraph operate routes authorize only knowledge_id in the request path, then query the target Document by document_id or Paragraph by paragraph_id without confirming that the object belongs to that knowledge base. A normal workspace user with a known victim document or paragraph UUID can use an attacker-owned knowledge-base path to read or modify content in another user's knowledge base. No fixed version is available as of this review.

Affected products (as reported)

Vendor	Product	Versions
1Panel-dev	MaxKB	>= 2.0.0, <= 2.10.2-lts

Weakness: CWE-639, CWE-862 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N

References

https://github.com/1Panel-dev/MaxKB/security/advisories/GHSA-58cm-c5jq-96vf x_refsource_CONFIRM