PatchSiren cyber security CVE debrief
CVE-2026-52873 truelockmc CVE debrief
AI-assisted PatchSiren debrief based on the supplied source corpus. The CVE record was published on 2026-08-18T22:16:53.830Z and has not been modified since then. 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. Users should verify affected product deployments, review official advisories, and monitor for suspicious activity related to script injection. Defenders should consider compensating controls for exposed systems while remediation is scheduled and verified.
- Vendor
- truelockmc
- Product
- streambert
- CVSS
- MEDIUM 6.9
- CISA KEV
- Not listed in stored evidence
- Original CVE published
- 2026-08-18
- Original CVE updated
- 2026-08-21
- Advisory published
- 2026-08-18
- Advisory updated
- 2026-08-21
Who should care
Users of Streambert versions 2.5.0 to 2.6.0, administrators of systems with Streambert installed, security teams monitoring for potential script injection attacks, and operators of affected platforms should be aware of this vulnerability and take necessary precautions to protect against potential attacks.
Technical summary
The wyzie-open-redeem IPC handler in Streambert versions 2.5.0 to 2.6.0 creates an Electron session and removes the Content-Security-Policy header from responses. The redeem window lacks a setWindowOpenHandler restriction, allowing script injection in sub.wyzie.io or other loaded pages. This can lead to execution of script without CSP constraints, affecting additional windows and persistent session storage. The vulnerability can be chained with other vulnerabilities to access internal services or sensitive data.
Defensive priority
Medium-priority defensive tasks are recommended given the CVSS score of 6.9 and the potential for script injection attacks.
Recommended defensive actions
- Apply the patch from version 2.6.0 to fix the vulnerability
- Restrict access to the Wyzie API key redemption window
- Monitor for suspicious activity related to script injection
- Implement additional security measures to protect against similar vulnerabilities
- Review compensating controls for exposed systems while remediation is scheduled and verified
- Check relevant monitoring, detection, and logs for exposed assets that need extra review
- Track exceptions, retest remediated assets, and close the item only after evidence is documented
Evidence notes
Evidence from the NVD and GitHub indicates that Streambert versions 2.5.0 to 2.6.0 are vulnerable to script injection due to the removal of the Content-Security-Policy header and lack of setWindowOpenHandler restriction. However, detailed information about the vulnerability and its impact is limited. Defenders should verify affected product deployments, review official advisories, and monitor for suspicious activity related to script injection.
Official resources
AI-assisted PatchSiren debrief based on the supplied source corpus. The CVE record was published on 2026-08-18T22:16:53.830Z and has not been modified since then.