What’s Vulnerable › Vulnerabilities

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

• Severity: medium (CVSS 5.4 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.2% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-09-21 · updated 2026-09-22
• Weakness: CWE-639

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

• 1Panel-dev MaxKB: from 2.0.0, <= 2.10.2-lts

References

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

Get alerted when CVE-2026-77517 or the next vulnerability affects your stack