CVE-2026-49138

MEDIUM SEVERITY

CVSS Score & Metrics

Base Score

5.0 / 10

Vector String

                                        CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:N/A:N                                    

Vulnerability Description

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.

Vulnerability Details

Published Date

June 01, 2026

Last Modified

June 02, 2026

CWE ID

CWE-918

Source

NVD

Vendor

HKUDS

Product

nanobot

External References

https://github.com/HKUDS/nanobot/commit/545294c62c0947da40eb5b65288aaf02b5fdf632
https://github.com/HKUDS/nanobot/pull/3928
https://github.com/HKUDS/nanobot/releases/tag/v0.2.1
https://www.vulncheck.com/advisories/nanobot-ssrf-via-web-fetch-tool-redirect-following

CVE-2026-49138

CVSS Score & Metrics

Vulnerability Description

Vulnerability Details

External References

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