CVE-2026-49138

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.

CVSS v3 5.0 MEDIUM

5.0^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 3.1 / Impact : 1.4

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact LOW

Integrity Impact NONE

Availability Impact NONE

Scope CHANGED

References

Link	Resource
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
https://github.com/HKUDS/nanobot/pull/3928

Configurations

No configuration.

History

02 Jun 2026, 14:16

Type	Values Removed	Values Added
References	~~() https://github.com/HKUDS/nanobot/pull/3928 -~~	() https://github.com/HKUDS/nanobot/pull/3928 -

01 Jun 2026, 21:16

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-06-01 21:16

Updated : 2026-06-17 10:55

NVD link : CVE-2026-49138

Mitre link : CVE-2026-49138

CVE.ORG link : CVE-2026-49138

JSON object : View

Products Affected

No product.

CWE

CWE-918

Server-Side Request Forgery (SSRF)

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