CVE-2026-42335

Description

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.

PUBLISHED Reserved 2026-04-26 | Published 2026-05-26 | Updated 2026-05-27 | Assigner GitHub_M

Problem types

CWE-918: Server-Side Request Forgery (SSRF)

Product status

References

github.com/.../MaxKB/security/advisories/GHSA-r8hf-mwwr-hxgc

cve.org (CVE-2026-42335)

nvd.nist.gov (CVE-2026-42335)

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