{"id":"CVE-2026-52873","summary":"Streambert: Global CSP Removal in Wyzie Redeem Window Enables Unconstrained XSS in Electron Renderer","details":"Streambert is a cross-platform Electron Desktop App to stream and download video content. From version 2.5.0 until version 2.6.0, the wyzie-open-redeem IPC handler in index.js creates the partition:wyzie-redeem Electron session and registers an onHeadersReceived hook that removes the Content-Security-Policy header from every response in that session. The redeem window also lacks a setWindowOpenHandler restriction, so script injection in sub.wyzie.io, a loaded third-party resource, or a site reached through navigation executes without CSP constraints and can affect additional windows and persistent session storage. A user must open the Wyzie API key redemption window, and exploitation requires attacker-controlled script content in a loaded page. The resulting renderer script can invoke renderer-exposed application functionality and can be chained with other vulnerabilities to access internal services or sensitive data. This issue is fixed in version 2.6.0.","aliases":["GHSA-2j2q-qvpf-wh43"],"modified":"2026-09-11T03:30:32.311616545Z","published":"2026-08-18T21:28:18.806Z","database_specific":{"cwe_ids":["CWE-693","CWE-79"],"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/52xxx/CVE-2026-52873.json","cna_assigner":"GitHub_M"},"references":[{"type":"WEB","url":"https://github.com/truelockmc/streambert/releases/tag/2.6.0"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/52xxx/CVE-2026-52873.json"},{"type":"ADVISORY","url":"https://github.com/truelockmc/streambert/security/advisories/GHSA-2j2q-qvpf-wh43"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-52873"},{"type":"FIX","url":"https://github.com/truelockmc/streambert/commit/0bd6b6ca8c830f22f75de1aa2e0d8b9bdf6d34c7"},{"type":"FIX","url":"https://github.com/truelockmc/streambert/pull/126"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/truelockmc/streambert","events":[{"introduced":"0"},{"fixed":"0bd6b6ca8c830f22f75de1aa2e0d8b9bdf6d34c7"},{"fixed":"9ab0f9d8ddc29c316a6084cad19c4f76df908251"}],"database_specific":{"source":["AFFECTED_FIELD","REFERENCES"],"extracted_events":[{"introduced":"0"},{"fixed":"2.6.0"}]}}],"versions":["2.5.0","2.4","v.2.3.0","2.3","2.2.1","2.2","2.1","2.0","1.7","1.6","1.5","1.4","1.3","1.2","1.1","1.0","0.3.0","0.2.1","0.2"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-52873.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:L/A:N"}]}