CVE-2026-49138 MEDIUM

CVE-2026-49138: Nanobot < 0.2.1 SSRF via web_fetch Tool Redirect Following

Vendor Hkuds
Product nanobot
Weakness CWE-918 · SSRF
Published June 1, 2026
Last update June 2, 2026

CVSS base score

5.3/10
Attack vector Network
Attack complexity Low
Privileges required Low
User interaction None
Confidentiality
Integrity

CVSS vector

CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:N/SC:L/SI:N/SA:N

What the vulnerability does

01Description

Nanobot prior to version 0.2.1 contains a server-side request forgery vulnerability in the web_fetch tool that allows remote attackers to reach internal or private network hosts by supplying a URL that redirects to a loopback or private address via a 3xx Location header. Attackers can exploit the automatic HTTP redirect following behavior in the httpx library to bypass initial URL validation and cause the runtime to send outbound requests to internal hosts before final resolved URL validation is applied.

Key dates

02Disclosure timeline

June 1, 2026 CVE published
June 2, 2026 Record updated