GHSA-434r-7c99-hwf3

Nanobot contains a server-side request forgery vulnerability in the web_fetch tool

Source: GitHub Advisory Database (reviewed) Moderate CVE-2026-49138

Packages

Ecosystem	Package	Affected	Fixed in
PyPI	nanobot-ai	< 0.2.1	0.2.1

Details

As written in the advisory (Markdown source, shown as plain text).

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.

References

External links from the advisory. They lead to third-party sites.

https://nvd.nist.gov/vuln/detail/CVE-2026-49138 advisory
https://github.com/HKUDS/nanobot/pull/3928 web
https://github.com/HKUDS/nanobot/commit/545294c62c0947da40eb5b65288aaf02b5fdf632 web
https://github.com/HKUDS/nanobot package
https://github.com/HKUDS/nanobot/releases/tag/v0.2.1 web
https://www.vulncheck.com/advisories/nanobot-ssrf-via-web-fetch-tool-redirect-following web