{"id":"GO-2026-5356","summary":"Arcane has Unauthenticated SSRF with Conditional Response Reflection in Template Fetch Endpoint in github.com/getarcaneapp/arcane/backend","details":"Arcane has Unauthenticated SSRF with Conditional Response Reflection in Template Fetch Endpoint in github.com/getarcaneapp/arcane/backend","aliases":["CVE-2026-40242","GHSA-ff24-4prj-gpmj"],"modified":"2026-06-25T19:45:34.727123744Z","published":"2026-06-25T18:43:19Z","database_specific":{"url":"https://pkg.go.dev/vuln/GO-2026-5356","review_status":"UNREVIEWED"},"references":[{"type":"ADVISORY","url":"https://github.com/getarcaneapp/arcane/security/advisories/GHSA-ff24-4prj-gpmj"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-40242"},{"type":"WEB","url":"https://github.com/getarcaneapp/arcane/releases/tag/v1.17.3"}],"affected":[{"package":{"name":"github.com/getarcaneapp/arcane/backend","ecosystem":"Go","purl":"pkg:golang/github.com/getarcaneapp/arcane/backend"},"ranges":[{"type":"SEMVER","events":[{"introduced":"0"},{"fixed":"1.17.3"}]}],"ecosystem_specific":{},"database_specific":{"source":"https://vuln.go.dev/ID/GO-2026-5356.json"}}],"schema_version":"1.7.5"}