{"cve":"CVE-2026-40242","nvd":{"published":"2026-04-10T21:16:27.747","modified":"2026-10-26T21:10:00.170","status":"Analyzed","description":"Arcane is an interface for managing Docker containers, images, networks, and volumes. Prior to 1.17.3, the /api/templates/fetch endpoint accepts a caller-supplied url parameter and performs a server-side HTTP GET request to that URL without authentication and without URL scheme or host validation. The server's response is returned directly to the caller. type. This constitutes an unauthenticated SSRF vulnerability affecting any publicly reachable Arcane instance. This vulnerability is fixed in 1.17.3.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N","score":6.5},"cwes":["CWE-918"],"references":["https://github.com/getarcaneapp/arcane/releases/tag/v1.17.3","https://github.com/getarcaneapp/arcane/security/advisories/GHSA-ff24-4prj-gpmj","https://github.com/getarcaneapp/arcane/security/advisories/GHSA-ff24-4prj-gpmj"],"products":["getarcane:arcane"],"source":"nvd","synced_at":"2026-10-26T21:38:48.864438205+00:00"},"epss":{"cve":"CVE-2026-40242","score":0.00621,"percentile":0.49466,"date":"2026-10-26"},"kev":null,"osv":[{"id":"GHSA-ff24-4prj-gpmj","url":"https://osv.dev/vulnerability/GHSA-ff24-4prj-gpmj","summary":"Arcane has Unauthenticated SSRF with Conditional Response Reflection in Template Fetch Endpoint","modified":"2026-07-21T14:02:57Z","packages":[{"ecosystem":"Go","name":"github.com/getarcaneapp/arcane/backend","purl":"pkg:golang/github.com/getarcaneapp/arcane/backend","ranges":["<1.17.3"],"fixed":["1.17.3"]}]},{"id":"GO-2026-5356","url":"https://osv.dev/vulnerability/GO-2026-5356","summary":"Arcane has Unauthenticated SSRF with Conditional Response Reflection in Template Fetch Endpoint in github.com/getarcaneapp/arcane/backend","modified":"2026-06-25T19:45:34.727123744Z","packages":[{"ecosystem":"Go","name":"github.com/getarcaneapp/arcane/backend","purl":"pkg:golang/github.com/getarcaneapp/arcane/backend","ranges":["<1.17.3"],"fixed":["1.17.3"]}]}],"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."]}