Security advisory

{
  "id": "e728df9d96dbfc4ea2b7c1f6c3d341a85d863aed85fadac55153c828b88e79f9",
  "url": "https://osv.dev/vulnerability/CVE-2021-41124",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "CVE-2021-41124",
    "summary": "Scrapy-splash is a library which provides Scrapy and JavaScript integration. In affected versions users who use [`HttpAuthMiddleware`](http://doc.scrapy.org/en/latest/topics/downloader-middleware.html#module-scrapy.downloadermiddlewares.httpauth) (i.e. the `http_user` and `http_pass` spider attributes) for Splash authentication will have any non-Splash request expose your credentials to the request target. This includes `robots.txt` requests sent by Scrapy when the `ROBOTSTXT_OBEY` setting is set to `True`. Upgrade to scrapy-splash 0.8.0 and use the new `SPLASH_USER` and `SPLASH_PASS` settings instead to set your Splash authentication credentials safely. If you cannot upgrade, set your Splash request credentials on a per-request basis, [using the `splash_headers` request parameter](https://github.com/scrapy-plugins/scrapy-splash/tree/0.8.x#http-basic-auth), instead of defining them globally using the [`HttpAuthMiddleware`](http://doc.scrapy.org/en/latest/topics/downloader-middleware.html#module-scrapy.downloadermiddlewares.httpauth). Alternatively, make sure all your requests go through Splash. That includes disabling the [robots.txt middleware](https://docs.scrapy.org/en/latest/topics/downloader-middleware.html#topics-dlmw-robots).",
    "evidence": "osv:CVE-2021-41124",
    "products": [],
    "severity": "high",
    "structured": {
      "id": "CVE-2021-41124",
      "aliases": [
        "CVE-2021-41124",
        "GHSA-823f-cwm9-4g74",
        "PYSEC-2021-364"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/scrapy-plugins/scrapy-splash",
              "type": "GIT",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "b42e1913e6ef6f7afdbf77aac0b329430c1805d8"
                },
                {
                  "fixed": "2b253e57fe64ec575079c8cdc99fe2013502ea31"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "cpe": "cpe:2.3:a:zyte:scrapy-splash:*:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "0"
                      },
                      {
                        "fixed": "0.8.0"
                      }
                    ],
                    "source": "CPE_RANGE"
                  },
                  {
                    "range": [
                      {
                        "fixed": "2b253e57fe64ec575079c8cdc99fe2013502ea31"
                      }
                    ],
                    "source": "REFERENCES_COMMIT"
                  }
                ]
              }
            }
          ],
          "versions": [
            "0.7.2",
            "0.7.1",
            "0.7",
            "0.6.1",
            "0.6",
            "0.5",
            "0.4",
            "0.3",
            "0.2",
            "0.1.1",
            "0.1"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2021-41124.json"
          }
        }
      ],
      "modified": "2026-10-20T10:54:57.832553925Z",
      "provider": "osv",
      "references": [
        "https://github.com/scrapy-plugins/scrapy-splash/security/advisories/GHSA-823f-cwm9-4g74",
        "https://github.com/scrapy-plugins/scrapy-splash/commit/2b253e57fe64ec575079c8cdc99fe2013502ea31"
      ],
      "provider_metadata": {}
    },
    "related_cves": [
      {
        "value": "CVE-2021-41124",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 386564,
  "published_at": "2021-10-05T21:15:09.59+00:00"
}