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OpenAdvisories
Medium · 5.1 CVE-2026-42336 EUVD-2026-31989

MaxKB: SSRF Bypass via DNS Rebinding in MaxKB OSS URL Fetch

Published May 26, 2026 · Updated May 27, 2026 · Assigned by GitHub_M

Description

MaxKB is an open-source AI assistant for enterprise. MaxKB 2.8.0 and prior are vulnerable to a server-side request forgery (SSRF) bypass in the OSS file service URL fetch functionality due to inconsistent DNS resolution between validation and actual request execution, allowing attackers to access internal network services. This vulnerability is fixed in 2.8.1.

Affected products

VendorProductAffectedFixed
1Panel-dev MaxKB < 2.8.1 —

References