Is CVE-2026-49138 actively exploited?

No active exploitation of CVE-2026-49138 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2026-49138 be exploited remotely?

Yes. CVE-2026-49138 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2026-49138?

CVE-2026-49138 has a CVSS score of 5.0 (MEDIUM).

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MEDIUM

CVE-2026-49138

CWE-918Published: June 1, 2026· Updated: Jun 2, 2026

5.0

CVSS v3.1

EPSS:0.04%probability of exploitation in 30 daysPercentile:11.9th

Official 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.

NVD Source

Technical Analysis

CVE-2026-49138 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

Exploitation requires low privileges, which limits the exposure to scenarios where an attacker has already gained initial access.

The vulnerability has a "Changed" scope, meaning successful exploitation can impact components beyond the vulnerable component itself — such as the host operating system or adjacent services.