RUSTSEC-2026-0443 (GHSA-8HCM-M7R7-FRWC)

Vulnerability from osv_rustsec – Published: 2026-11-06 12:00 – Updated: 2026-11-06 14:33 – Source website
VLAI
Summary
Hidden file disclosure through Windows short names
Details

On Windows volumes with 8.3 short names, actix_files::Files can serve hidden files through their short-name aliases. The default path check rejects segments that start with a dot, but an alias such as ENV~1 or GIT~1 passes this check.

A remote client can read files such as .env or .git/config in the served directory even when use_hidden_files() is not enabled. This can expose secrets or source code.

Upgrade to actix-files 0.7.4 or later. As a workaround, remove sensitive files and directories from the served directory.

References
To clipboard 

{
  "affected": [
    {
      "database_specific": {
        "categories": [],
        "cvss": null,
        "informational": null
      },
      "ecosystem_specific": {
        "affected_functions": null,
        "affects": {
          "arch": [],
          "functions": [],
          "os": [
            "windows"
          ]
        }
      },
      "package": {
        "ecosystem": "crates.io",
        "name": "actix-files",
        "purl": "pkg:cargo/actix-files"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0.0.0-0"
            },
            {
              "fixed": "0.7.4"
            }
          ],
          "type": "SEMVER"
        }
      ],
      "versions": []
    }
  ],
  "aliases": [
    "GHSA-8hcm-m7r7-frwc"
  ],
  "database_specific": {
    "license": "CC0-1.0"
  },
  "details": "On Windows volumes with 8.3 short names, `actix_files::Files` can serve hidden\nfiles through their short-name aliases. The default path check rejects segments\nthat start with a dot, but an alias such as `ENV~1` or `GIT~1` passes this check.\n\nA remote client can read files such as `.env` or `.git/config` in the served\ndirectory even when `use_hidden_files()` is not enabled. This can expose secrets\nor source code.\n\nUpgrade to actix-files 0.7.4 or later. As a workaround, remove sensitive files\nand directories from the served directory.",
  "id": "RUSTSEC-2026-0443",
  "modified": "2026-11-06T14:33:54Z",
  "published": "2026-11-06T12:00:00Z",
  "references": [
    {
      "type": "PACKAGE",
      "url": "https://crates.io/crates/actix-files"
    },
    {
      "type": "ADVISORY",
      "url": "https://rustsec.org/advisories/RUSTSEC-2026-0443.html"
    },
    {
      "type": "WEB",
      "url": "https://github.com/actix/actix-web/commit/f2c83122d244e4ba38514ee3fe1fd42a110dc3f0"
    }
  ],
  "related": [],
  "severity": [],
  "summary": "Hidden file disclosure through Windows short names"
}



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