Vulnerability-Lookup

CVE-2026-10031 (GCVE-0-2026-10031)

Vulnerability from cvelistv5 – Published: 2026-07-30 22:51 – Updated: 2026-07-31 19:15

Title

SFTPGo 2.7.4 Permission Bypass via Symbolic Link Creation

Summary

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.

Severity

2.3 (Low)


                        
                          CVSS:4.0/AV:N/AC:H/AT:N/PR:L/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N

4.2 (Medium)


                        
                          CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:N

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator (v2.0.3)

CWE

CWE-863 - Incorrect Authorization

Assigner

VulnCheck

References

4 references

URL	Tags
https://github.com/drakkan/sftpgo	product
https://github.com/drakkan/sftpgo/security/adviso…	vendor-advisory
https://github.com/drakkan/sftpgo/releases/tag/v2.7.4	release-notes
https://www.vulncheck.com/advisories/sftpgo-permi…	third-party-advisory

Impacted products

1 product

Vendor	Product	Version
drakkan	SFTPGo	Affected: 0 , ≤ 2.7.4 (semver)

Date Public

2026-07-30 00:00

Credits

Nullx3D (Batuhan SANCAK)

Show details on NVD website

JSON

To clipboard

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        "metrics": [
          {
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              "content": {
                "id": "CVE-2026-10031",
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          "name": "SFTPGo v2.7.4 Release Notes",
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      "source": {
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    "dateReserved": "2026-05-28T18:37:02.626Z",
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GHSA-3964-29FF-VWFF

Vulnerability from github – Published: 2026-07-31 00:30 – Updated: 2026-07-31 00:30

Details

Severity

4.2 (Medium)


                  
                    CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:N

2.3 (Low)


                  
                    CVSS:4.0/AV:N/AC:H/AT:N/PR:L/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N

Show details on source website

JSON

To clipboard

{
  "affected": [],
  "aliases": [
    "CVE-2026-10031"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-863"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-07-30T23:16:51Z",
    "severity": "LOW"
  },
  "details": "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\u0027s directory permissions rather than the dereferenced target\u0027s directory permissions.",
  "id": "GHSA-3964-29ff-vwff",
  "modified": "2026-07-31T00:30:22Z",
  "published": "2026-07-31T00:30:22Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/drakkan/sftpgo/security/advisories/GHSA-fj9v-mxr3-w75w"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-10031"
    },
    {
      "type": "WEB",
      "url": "https://github.com/drakkan/sftpgo"
    },
    {
      "type": "WEB",
      "url": "https://github.com/drakkan/sftpgo/releases/tag/v2.7.4"
    },
    {
      "type": "WEB",
      "url": "https://www.vulncheck.com/advisories/sftpgo-permission-bypass-via-symbolic-link-creation"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:N",
      "type": "CVSS_V3"
    },
    {
      "score": "CVSS:4.0/AV:N/AC:H/AT:N/PR:L/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X",
      "type": "CVSS_V4"
    }
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}

Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Detection rules are retrieved from Rulezet.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.

Action not permitted

CVE-2026-10031 (GCVE-0-2026-10031)

GHSA-3964-29FF-VWFF

Tags

Sightings

Nomenclature