Security advisory

{
  "id": "0c20bc9d5d41dae7576ef4ce80e4e8140a61808a0408e1da6d53d07c492208d7",
  "url": "https://osv.dev/vulnerability/CVE-2021-21354",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "CVE-2021-21354",
    "summary": "Pollbot is open source software which \"frees its human masters from the toilsome task of polling for the state of things during the Firefox release process.\" In Pollbot before version 1.4.4 there is an open redirection vulnerability in the path of \"https://pollbot.services.mozilla.com/\". An attacker can redirect anyone to malicious sites. To Reproduce type in this URL: \"https://pollbot.services.mozilla.com//evil.com/\". Affected versions will redirect to that website when you inject a payload like \"//evil.com/\". This is fixed in version 1.4.4.",
    "evidence": "osv:CVE-2021-21354",
    "products": [],
    "severity": "medium",
    "structured": {
      "id": "CVE-2021-21354",
      "aliases": [
        "CVE-2021-21354",
        "GHSA-jhgx-wmq8-jc24"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/mozilla/pollbot",
              "type": "GIT",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "4e9557ef4cc0c36fb2f190e7cfec39d9f81fb636"
                },
                {
                  "fixed": "6db74a4fcbff258c7cdf51a6ff0724fc10c485e5"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "cpe": "cpe:2.3:a:mozilla:pollbot:*:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "0"
                      },
                      {
                        "fixed": "1.4.4"
                      }
                    ],
                    "source": "CPE_RANGE"
                  },
                  {
                    "range": [
                      {
                        "fixed": "6db74a4fcbff258c7cdf51a6ff0724fc10c485e5"
                      }
                    ],
                    "source": "REFERENCES_COMMIT"
                  },
                  {
                    "range": [
                      {
                        "fixed": "4e9557ef4cc0c36fb2f190e7cfec39d9f81fb636"
                      }
                    ],
                    "source": "REFERENCES_TAG",
                    "original_tag": "v1.4.4"
                  }
                ]
              }
            }
          ],
          "versions": [
            "1.4.3",
            "v1.4.2",
            "v1.4.1",
            "v1.4.0",
            "1.3.0",
            "1.2.1",
            "1.2.0",
            "1.1.5",
            "1.1.4",
            "1.1.3",
            "1.1.2",
            "1.1.0",
            "1.0.0",
            "0.6.1",
            "0.6.0",
            "0.5.0",
            "0.4.0",
            "0.3.0",
            "0.2.1",
            "0.2.0",
            "0.1.0"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2021-21354.json"
          }
        }
      ],
      "modified": "2026-10-20T10:53:39.134391579Z",
      "provider": "osv",
      "references": [
        "https://cheatsheetseries.owasp.org/cheatsheets/Unvalidated_Redirects_and_Forwards_Cheat_Sheet.html",
        "https://github.com/mozilla/PollBot/releases/tag/v1.4.4",
        "https://bugzilla.mozilla.org/show_bug.cgi?id=1694684",
        "https://github.com/mozilla/PollBot/commit/6db74a4fcbff258c7cdf51a6ff0724fc10c485e5",
        "https://github.com/mozilla/PollBot/pull/333",
        "https://github.com/mozilla/PollBot/security/advisories/GHSA-jhgx-wmq8-jc24"
      ],
      "provider_metadata": {}
    },
    "related_cves": [
      {
        "value": "CVE-2021-21354",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 384462,
  "published_at": "2021-03-08T19:15:13.333+00:00"
}