Streambert: Global CSP Removal in Wyzie Redeem Window Enables Unconstrained XSS in Electron Renderer
Published Aug 18, 2026
6.9
MEDIUMCVSS 3.1
EPSS 0.36%
Description
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.
Affected products
-
- Version < 2.6.0StatusaffectedConstraints-
- Version
Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).
| Vendor | Product | Default status | Versions | ||||||
|---|---|---|---|---|---|---|---|---|---|
| Truelockmc | Streambert | n/a |
|
No data.
No data.
No Red Hat product state for this CVE.
No package ranges for this CVE.
Remediation
No remediation recorded yet.
References (4)
- https://github.com/truelockmc/streambert/commit/0bd6b6ca8c830f22f75de1aa2e0d8b9bdf6d34c7 x_refsource_MISC
- https://github.com/truelockmc/streambert/pull/126 x_refsource_MISC
- https://github.com/truelockmc/streambert/releases/tag/2.6.0 x_refsource_MISC
- https://github.com/truelockmc/streambert/security/advisories/GHSA-2j2q-qvpf-wh43 exploitx_refsource_CONFIRM
| Link | Providers | Tags |
|---|---|---|
| https://github.com/truelockmc/streambert/commit/0bd6b6ca8c830f22f75de1aa2e0d8b9bdf6d34c7 | x_refsource_MISC | |
| https://github.com/truelockmc/streambert/pull/126 | x_refsource_MISC | |
| https://github.com/truelockmc/streambert/releases/tag/2.6.0 | x_refsource_MISC | |
| https://github.com/truelockmc/streambert/security/advisories/GHSA-2j2q-qvpf-wh43 | exploitx_refsource_CONFIRM |
Change history (0)
No recorded changes yet.