CVE-2026-49138

Nanobot < 0.2.1 SSRF via web_fetch Tool Redirect Following

MEDIUM
5
CVSS Score
Published: June 1, 2026 at 07:41 PM UTC
Updated: October 8, 2026 at 04:17 PM UTC
2 products affected across 2 vendorsNanobotNanobot

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Severity
MEDIUM5
Exploit prediction
EPSS 0.4%
SSVC
PoC

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

v < 0.2.1
Affected range stops below 0.2.1, so it looks safe — our inference, not a vendor statement
0 ≤ v < 0.2.10
Affected range stops below 0.2.1, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

SSVC — Action Prioritization

SSVCPoCNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

5MEDIUMVulnCheck
Attack Vector
NETWORK
Complexity
LOW
Privileges
LOW
User Interaction
NONE
Scope
CHANGED
Confidentiality
LOW
Integrity
NONE
Availability
NONE
Vector?

Quick Info

StatusDEFERRED
CWE
CWE-918

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