CVE-2026-42335
Medium
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.
SeverityMedium
CVSS6.3
Exploit probability—
ProductMaxKB
PublishedMay 26, 2026
First seenMay 26, 2026
Weakness typeCWE-918Server-side request forgery (SSRF)
How to fix
Sources list no fixed version or patch link for this vulnerability.
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| 1Panel-dev MaxKB | < 2.8.1 | — |
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