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TI-2026-37972 Aliases CVE-2026-52872

Streambert: Local File Exfiltration and Overwrite via Subtitle file: Protocol

Priority HIGH 73CWE-22Published · Updated

Key facts

Attack vector
Local
Privileges required
Low
User interaction
None
Attack complexity
Low
Impact type
—
Confidentiality · integrity · availability
High · High · High
Fix status
Fixed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA.

Summary

Streambert is a cross-platform Electron Desktop App to stream and download video content. Prior to 2.5.0, the downloadSubtitleFile utility in src/ipc/downloads.js, reached through the run-download IPC channel, accepts a renderer-supplied subtitle url using the file: URI scheme and passes its decoded pathname to fs.copyFileSync. The renderer also controls downloadPath, which determines the destination path. A compromised renderer can therefore copy any file readable by the StreamBERT process into an attacker-chosen writable location, exposing sensitive local data, and can overwrite existing writable files. This vulnerability is fixed in 2.5.0.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.00183 7th percentileScored 2026-11-07
Fix Fixed streambert (truelockmc): 2.5.0

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
Poc
Automatable
No
Technical impact
Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
truelockmcstreambertbefore 2.5.02.5.0Patch availableCNA
  • streambert Vendortruelockmc Affected before 2.5.0 Fixed in 2.5.0 Patch available CNA

Remediation

  • Fix · CNA streambert (truelockmc) Fixed in 2.5.0

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-52872

References

Other 1

  • TI-2026-35498 Streambert Vulnerable to Arbitrary Binary Execution via Downloader IPC Handler CVSS 3.1CRITICAL 10.0
  • TI-2026-35497 Streambert: Arbitrary File Write (Zip Slip) via Subtitle Extraction CVSS 3.1CRITICAL 10.0
  • TI-2026-35488 Streambert Vulnerable to Remote Code Execution (RCE) via Unvalidated Auto-Updater IPC Handler CVSS 4.0CRITICAL 9.3
  • TI-2026-37974 Streambert: Arbitrary Directory Creation and File Manipulation via Backup Handler CVSS 4.0HIGH 8.4
  • TI-2026-37976 Streambert : Insecure Protocol Execution in open-external IPC Handler CVSS 3.1HIGH 8.3
  • TI-2026-37973 Streambert: Global CSP Removal in Wyzie Redeem Window Enables Unconstrained XSS in Electron Renderer CVSS 3.1MEDIUM 6.9
See all 7 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences