{"cve":"CVE-2026-49138","nvd":{"published":"2026-06-01T21:16:46.760","modified":"2026-10-08T16:17:18.497","status":"Deferred","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.","cvss_v4":{"vector":"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","score":5.3},"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:N/A:N","score":5.0},"cwes":["CWE-918"],"references":["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"],"products":[],"source":"nvd","synced_at":"2026-10-19T22:37:48.043517290+00:00"},"epss":{"cve":"CVE-2026-49138","score":0.00355,"percentile":0.28976,"date":"2026-10-25"},"kev":null,"osv":[{"id":"GHSA-434r-7c99-hwf3","url":"https://osv.dev/vulnerability/GHSA-434r-7c99-hwf3","summary":"Nanobot contains a server-side request forgery vulnerability in the web_fetch tool","modified":"2026-08-04T14:41:01.667396718Z","packages":[{"ecosystem":"PyPI","name":"nanobot-ai","purl":"pkg:pypi/nanobot-ai","ranges":["<0.2.1"],"fixed":["0.2.1"]}]},{"id":"PYSEC-2026-3580","url":"https://osv.dev/vulnerability/PYSEC-2026-3580","summary":"Nanobot contains a server-side request forgery vulnerability in the web_fetch tool","modified":"2026-08-04T14:30:27.312345511Z","packages":[{"ecosystem":"PyPI","name":"nanobot-ai","purl":"pkg:pypi/nanobot-ai","ranges":["<0.2.1"],"fixed":["0.2.1"]}]}],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}