{
  "affected": [
    {
      "database_specific": {
        "last_known_affected_version_range": "\u003c= 0.6.9"
      },
      "package": {
        "ecosystem": "crates.io",
        "name": "actix-files"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "0.6.10"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [],
  "database_specific": {
    "cwe_ids": [
      "CWE-200"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2026-02-06T18:56:20Z",
    "nvd_published_at": null,
    "severity": "MODERATE"
  },
  "details": "### Summary\n\nWhen passing a non-existing folder to the `actix_files::Files::new()` method causes the actix server to expose unexpected files.\n\n### Details\n\nThe `actix-files` library exposes a [`Files` struct](https://github.com/actix/actix-web/blob/fba766b4beb92278665d58815c94d336015225c5/actix-files/src/files.rs#L38) that configures an actix `service` to serve the files in a folder as static assets. Below you can find the [signature of the `Files::new` method](https://github.com/actix/actix-web/blob/fba766b4beb92278665d58815c94d336015225c5/actix-files/src/files.rs#L98):\n\n```rust\npub fn new\u003cT: Into\u003cPathBuf\u003e\u003e(mount_path: \u0026str, serve_from: T) -\u003e Files\n```\n\nWhen the `mount_path` you pass to `Files` doesn\u0027t exist, [it defaults to an empty path](https://github.com/actix/actix-web/blob/fba766b4beb92278665d58815c94d336015225c5/actix-files/src/files.rs#L104) (`Path::new()`). When the service receives a HTTP request, it [joins the request information with the empty path](https://github.com/actix/actix-web/blob/fba766b4beb92278665d58815c94d336015225c5/actix-files/src/service.rs#L136) and calls `canonicalize`. Rust resolves this path as relative and returns any file that matches it.\n\nThis behavior causes the library to expose unexpected files when the folder is not present.\n\n### PoC\n\n_There is a working PoC on https://github.com/Angelmmiguel/actix-files-vuln, although the next steps can be followed to reproduce the issue_\n\n1. Clone the https://github.com/actix/examples repository.\n2. Change your directory to the `basics/static-files` folder.\n3. Edit the `src/main.rs` file and change the line 13 to mount a non-existing folder:\n\n    ```diff\n    -        .service(Files::new(\"/images\", \"static/images/\").show_files_listing())\n    +        .service(Files::new(\"/images\", \"static/missing/\").show_files_listing())\n    ```\n    \n4. Run the project with `cargo run`.\n5. Access the \u003chttp://localhost:8080/images/Cargo.toml\u003e URL.\n\n### Impact\n\nThis is an exposure of information vulnerability. It affects anyone using the `actix-files::Files` library that mounts a non-existing folder for any reason.",
  "id": "GHSA-8v2v-wjwg-vx6r",
  "modified": "2026-02-06T18:56:20Z",
  "published": "2026-02-06T18:56:20Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/actix/actix-web/security/advisories/GHSA-8v2v-wjwg-vx6r"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/actix/actix-web"
    },
    {
      "type": "WEB",
      "url": "https://github.com/actix/actix-web/blob/fba766b4beb92278665d58815c94d336015225c5/actix-files/src/files.rs#L104"
    },
    {
      "type": "WEB",
      "url": "https://github.com/actix/actix-web/blob/fba766b4beb92278665d58815c94d336015225c5/actix-files/src/files.rs#L38"
    },
    {
      "type": "WEB",
      "url": "https://github.com/actix/actix-web/blob/fba766b4beb92278665d58815c94d336015225c5/actix-files/src/files.rs#L98"
    },
    {
      "type": "WEB",
      "url": "https://github.com/actix/actix-web/blob/fba766b4beb92278665d58815c94d336015225c5/actix-files/src/service.rs#L136"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N",
      "type": "CVSS_V4"
    }
  ],
  "summary": "actix-files has a possible exposure of information vulnerability"
}