CVE-2026-42336

MEDIUM

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

Title source: cna
STIX 2.1

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.

References (1)

Core 1
Core References

Scores

CVSS v4 5.1
EPSS 0.0019
EPSS Percentile 8.4%
CVSS:4.0/AV:N/AC:H/AT:N/PR:L/UI:N/VC:N/VI:N/VA:N/SC:H/SI:L/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

CISA SSVC

Vulnrichment
Exploitation none
Automatable no
Technical Impact partial

Details

CWE
CWE-367 CWE-918
Status published
Products (1)
1Panel-dev/MaxKB < 2.8.1
Published May 26, 2026
Tracked Since May 27, 2026