CVE-2026-49138

MEDIUM
MEDIUM Priority: 0.02 BB Relevance: 61/100
Published: 2026-06-01 Modified: 2026-11-08 First seen: 2026-11-08 Status: active

Attack Surface

Network Low Complexity No Interaction

CVSS Vector Breakdown

AV: Network
AC: Low
PR: Low
UI: None
AT: None
VC: None
VI: Low
VA: None

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 Software (1)

VendorProductVersion
HKUDS nanobot 0 < 0.2.1

Bug Bounty Relevance

61 / 100
✓ Network accessible
✓ Low complexity
✓ No user interaction

CVSS Score

5.3 / 10.0 v4.0
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

EPSS — Exploitation Probability

0.36%
Raw Score 0.003550
Percentile 29.7%
Date 2026-11-13

EPSS Trend

2026-11-13
0.00355
2026-11-12
0.00355
2026-11-10
0.00355
2026-11-09
0.00355
2026-11-08
0.00355

Intelligence Sources

mitre ref →