Medium 5.0Published Jun 1, 2026

CVE-2026-49138Nanobot < 0.2.1 SSRF via web_fetch Tool Redirect Following

Updated under an hour ago (2026-10-19 09:40 UTC)

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It affects HKUDS nanobot. Add what you run to find out whether that includes you.

No exploitation reported and no EPSS estimate yet.

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Every CVE for HKUDS nanobot

Exploited in the last 30 days

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: 5.0 MEDIUM (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:N/A:N
Weakness (CWE): CWE-918
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: VulnCheck
NVD analysis: Deferred
Record last updated: Oct 8, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

HKUDS nanobot hkuds:nanobot (from the name)	before 0.2.1	CNA record

References

https://github.com/HKUDS/nanobot/releases/tag/v0.2.1release-notes
https://github.com/HKUDS/nanobot/pull/3928issue-tracking
https://github.com/HKUDS/nanobot/commit/545294c62c0947da40eb5b65288aaf02b5fdf632patch
https://www.vulncheck.com/advisories/nanobot-ssrf-via-web-fetch-tool-redirect-followingthird-party-advisory

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.