PT-2026-43396 · 1Panel Dev · Maxkb

Fushuling · Published 2026-05-26 · Updated 2026-05-26 · CVE-2026-42335

Mitre

CVSS v4.0

6.3

Medium

Base vector

AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:N/SC:H/SI:L/SA:N

MaxKB is an open-source AI assistant for enterprise. Prior to 2.8.1, MaxKB v2.8.0 and prior are vulnerable to a server-side request forgery (SSRF) bypass in the OSS file service URL fetch (chat/api/oss/get url) endpoint. The vulnerability exists due to inconsistent URL parsing between the urlparse validation function and the requests HTTP client, allowing attackers to access internal network services. This vulnerability is fixed in 2.8.1.

Fix

SSRF

Weakness Enumeration

CWE-918

Related Identifiers

CVE-2026-42335

Affected Products

Maxkb

References · 2

• https://nvd.nist.gov/vuln/detail/CVE-2026-42335 · Security Note
• https://github.com/1Panel-dev/MaxKB/security/advisories/GHSA-r8hf-mwwr-hxgc · Note