{"id":"CVE-2026-45627","summary":"Arcane: Unauthenticated reflected XSS via SVG color parameter in /api/app-images/logo enables admin account takeover","details":"Arcane is an interface for managing Docker containers, images, networks, and volumes. Prior to 1.19.0, the unauthenticated GET /api/app-images/logo endpoint reflects a user-supplied color query parameter into the body of an SVG document via strings.ReplaceAll with no escaping. The substitution lands inside a \u003cstyle\u003e element of the embedded logo.svg, allowing an attacker to close the style block and inject executable \u003cscript\u003e content. Because the response is served as image/svg+xml and Arcane sets no Content-Security-Policy or X-Content-Type-Options headers, navigating a logged-in admin victim to a crafted URL executes attacker-controlled JavaScript in Arcane's origin and rides the victim's HttpOnly JWT cookie to fully compromise the admin account. This vulnerability is fixed in 1.19.0.","aliases":["GHSA-q2pj-8v84-9mh5","GO-2026-5561"],"modified":"2026-07-08T08:13:29.913103753Z","published":"2026-05-29T17:08:53.797Z","database_specific":{"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/45xxx/CVE-2026-45627.json","cna_assigner":"GitHub_M","cwe_ids":["CWE-79"]},"references":[{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/45xxx/CVE-2026-45627.json"},{"type":"ADVISORY","url":"https://github.com/getarcaneapp/arcane/security/advisories/GHSA-q2pj-8v84-9mh5"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-45627"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/getarcaneapp/arcane","events":[{"introduced":"0"},{"fixed":"2d6d0790e980f0fd77b57a0869b88bccc07d0283"}],"database_specific":{"extracted_events":[{"introduced":"0"},{"fixed":"1.19.0"}],"source":"AFFECTED_FIELD"}}],"versions":["v1.18.1","types/v1.18.1","cli/v1.18.1","backend/v1.18.1","v1.18.0","types/v1.18.0","cli/v1.18.0","backend/v1.18.0","v1.17.4","types/v1.17.4","cli/v1.17.4","backend/v1.17.4","v1.17.3","types/v1.17.3","cli/v1.17.3","backend/v1.17.3","v1.17.2","types/v1.17.2","cli/v1.17.2","backend/v1.17.2","v1.17.1","types/v1.17.1","cli/v1.17.1","backend/v1.17.1","v1.17.0","types/v1.17.0","cli/v1.17.0","backend/v1.17.0","v1.16.3","types/v1.16.3","cli/v1.16.3","backend/v1.16.3","v1.16.2","types/v1.16.2","cli/v1.16.2","backend/v1.16.2","v1.16.1","types/v1.16.1","cli/v1.16.1","backend/v1.16.1","v1.16.0","types/v1.16.0","cli/v1.16.0","backend/v1.16.0","v1.15.3","types/v1.15.3","cli/v1.15.3","backend/v1.15.3","v1.15.2","types/v1.15.2","cli/v1.15.2","v1.15.1","types/v1.15.1","cli/v1.15.1","v1.15.0","types/v1.15.0","cli/v1.15.0","v1.14.1","v1.14.0","v1.13.2","v1.13.1","v1.13.0","v1.12.2","v1.12.1","v1.12.0","v1.11.3","v1.11.2","v1.11.1","v1.11.0","v1.10.1","v1.10.0","v1.9.0","v1.8.1","v1.8.0","v1.7.1","v1.7.0","v1.6.0","v1.5.2","v1.5.1","v1.5.0","v1.4.0","v1.3.0","v1.2.2","v1.2.1","v1.2.0","v1.1.0","v1.0.2","v1.0.1","v1.0.0","v0.15.1","v0.15.0","v0.14.0","v0.13.1","v0.13.0","v0.12.0","v0.11.1","v0.11.0","v0.10.0","v0.9.2","v0.9.1","v0.9.0","v0.8.0","v0.7.1","v0.7.0","v0.6.0","v0.5.0","v0.4.1","v0.4.0","v0.3.0","v0.2.0","v0.1.1","v0.1.0"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-45627.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:L/A:N"}]}