CVE-2026-48055 Streambert: Arbitrary File Write (Zip Slip) via Subtitle Extraction
Attackers can write arbitrary files to the host filesystem via malicious ZIP archives in Streambert, potentially leading to code execution.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-48055?
CVE-2026-48055 is a critical path traversal vulnerability in truelockmc streambert, published on 16 Jun 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
Streambert is a cross-platform Electron Desktop App to stream and download any video media. In versions 2.4.0 and prior, a high-severity Zip Slip vulnerability was identified in Streambert's subtitle extraction logic. The application does not sanitize archive entry filenames during extraction, allowing a malicious archive to perform path traversal and write arbitrary files to the host filesystem. The subtitle extraction process downloads a ZIP archive and extracts its entries. The destination file path is constructed by concatenating the raw archive entry name (extracted.name) directly to the temporary directory path. If a malicious ZIP archive containing directory traversal sequences is processed, it escapes the temporary directory boundaries. The application then writes the extracted payload anywhere on the host filesystem subject to the application's current write permissions. This issue has been fixed in version 2.5.0.
Which versions are affected by CVE-2026-48055?
How do I fix CVE-2026-48055?
No fix has been published for CVE-2026-48055 yet. Limit exposure of the affected software until one is available.
Upgrade, and resolve every user-supplied path against an allowed base folder before opening it. More about Path traversal.
Is CVE-2026-48055 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-48055 exists.
Sources
Also known as GHSA-3q2x-3q9p-qwfc.