What’s Vulnerable › Vulnerabilities

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

• Severity: medium (CVSS 5.4 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.2% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-07-30 · updated 2026-10-29
• Weakness: CWE-863

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.

Affected products

• drakkan sftpgo: before 2.7.4 — fixed in 2.7.4

How to fix

Upgrade to a fixed version: drakkan sftpgo 2.7.4. Check the vendor advisory for mitigations.

References

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

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