{"api_version":"1","generated_at":"2026-07-25T00:17:05+00:00","cve":"CVE-2021-21354","urls":{"html":"https://cve.report/CVE-2021-21354","api":"https://cve.report/api/cve/CVE-2021-21354.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2021-21354","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2021-21354"},"summary":{"title":"CVE-2021-21354","description":"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.","state":"PUBLIC","assigner":"security-advisories@github.com","published_at":"2021-03-08 19:15:00","updated_at":"2021-03-12 15:21:00"},"problem_types":["CWE-601"],"metrics":[],"references":[{"url":"https://bugzilla.mozilla.org/show_bug.cgi?id=1694684","name":"https://bugzilla.mozilla.org/show_bug.cgi?id=1694684","refsource":"MISC","tags":["Issue Tracking","Permissions Required","Third Party Advisory"],"title":"Access Denied","mime":"text/html","httpstatus":"200","archivestatus":"404"},{"url":"https://cheatsheetseries.owasp.org/cheatsheets/Unvalidated_Redirects_and_Forwards_Cheat_Sheet.html","name":"https://cheatsheetseries.owasp.org/cheatsheets/Unvalidated_Redirects_and_Forwards_Cheat_Sheet.html","refsource":"MISC","tags":["Third Party Advisory"],"title":"Unvalidated Redirects and Forwards - OWASP Cheat Sheet Series","mime":"text/html","httpstatus":"200","archivestatus":"200"},{"url":"https://github.com/mozilla/PollBot/security/advisories/GHSA-jhgx-wmq8-jc24","name":"https://github.com/mozilla/PollBot/security/advisories/GHSA-jhgx-wmq8-jc24","refsource":"CONFIRM","tags":["Exploit","Third Party Advisory"],"title":"open redirect in [pollbot.services.mozilla.com] · Advisory · mozilla/PollBot · GitHub","mime":"text/html","httpstatus":"200","archivestatus":"404"},{"url":"https://github.com/mozilla/PollBot/pull/333","name":"https://github.com/mozilla/PollBot/pull/333","refsource":"MISC","tags":["Patch","Third Party Advisory"],"title":"Advisory fix 1 by bhearsum · Pull Request #333 · mozilla/PollBot · GitHub","mime":"text/html","httpstatus":"200","archivestatus":"404"},{"url":"https://github.com/mozilla/PollBot/releases/tag/v1.4.4","name":"https://github.com/mozilla/PollBot/releases/tag/v1.4.4","refsource":"MISC","tags":["Third Party Advisory"],"title":"Release 1.4.4 Release · mozilla/PollBot · GitHub","mime":"text/html","httpstatus":"200","archivestatus":"404"},{"url":"https://github.com/mozilla/PollBot/commit/6db74a4fcbff258c7cdf51a6ff0724fc10c485e5","name":"https://github.com/mozilla/PollBot/commit/6db74a4fcbff258c7cdf51a6ff0724fc10c485e5","refsource":"MISC","tags":["Patch","Third Party Advisory"],"title":"Remove leading slashes in 404 redirections · mozilla/PollBot@6db74a4 · GitHub","mime":"text/html","httpstatus":"200","archivestatus":"404"},{"url":"https://www.cve.org/CVERecord?id=CVE-2021-21354","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2021-21354","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[],"timeline":[],"solutions":[],"workarounds":[],"exploits":[],"credits":[],"nvd_cpes":[{"cve_year":"2021","cve_id":"21354","vulnerable":"1","versionEndIncluding":"","cpe1":"cpe","cpe2":"2.3","cpe3":"a","cpe4":"mozilla","cpe5":"pollbot","cpe6":"*","cpe7":"*","cpe8":"*","cpe9":"*","cpe10":"*","cpe11":"*","cpe12":"*","cpe13":"*"},{"cve_year":"2021","cve_id":"21354","vulnerable":"1","versionEndIncluding":"1","cpe1":"cpe","cpe2":"2.3","cpe3":"a","cpe4":"mozilla","cpe5":"pollbot","cpe6":"*","cpe7":"*","cpe8":"*","cpe9":"*","cpe10":"*","cpe11":"*","cpe12":"*","cpe13":"*"}],"vendor_comments":[],"enrichments":{"kev":null,"epss":null,"legacy_qids":[]},"source_records":{"cve_program":{"CVE_data_meta":{"ASSIGNER":"security-advisories@github.com","ID":"CVE-2021-21354","STATE":"PUBLIC","TITLE":"Open redirect in pollbot"},"affects":{"vendor":{"vendor_data":[{"product":{"product_data":[{"product_name":"PollBot","version":{"version_data":[{"version_value":"< 1.4.4"}]}}]},"vendor_name":"mozilla"}]}},"data_format":"MITRE","data_type":"CVE","data_version":"4.0","description":{"description_data":[{"lang":"eng","value":"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."}]},"impact":{"cvss":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"NONE","baseScore":7.4,"baseSeverity":"HIGH","confidentialityImpact":"NONE","integrityImpact":"HIGH","privilegesRequired":"NONE","scope":"CHANGED","userInteraction":"REQUIRED","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:N/I:H/A:N","version":"3.1"}},"problemtype":{"problemtype_data":[{"description":[{"lang":"eng","value":"{\"CWE-601\":\"URL Redirection to Untrusted Site ('Open Redirect')\"}"}]}]},"references":{"reference_data":[{"name":"https://github.com/mozilla/PollBot/security/advisories/GHSA-jhgx-wmq8-jc24","refsource":"CONFIRM","url":"https://github.com/mozilla/PollBot/security/advisories/GHSA-jhgx-wmq8-jc24"},{"name":"https://bugzilla.mozilla.org/show_bug.cgi?id=1694684","refsource":"MISC","url":"https://bugzilla.mozilla.org/show_bug.cgi?id=1694684"},{"name":"https://cheatsheetseries.owasp.org/cheatsheets/Unvalidated_Redirects_and_Forwards_Cheat_Sheet.html","refsource":"MISC","url":"https://cheatsheetseries.owasp.org/cheatsheets/Unvalidated_Redirects_and_Forwards_Cheat_Sheet.html"},{"name":"https://github.com/mozilla/PollBot/releases/tag/v1.4.4","refsource":"MISC","url":"https://github.com/mozilla/PollBot/releases/tag/v1.4.4"},{"name":"https://github.com/mozilla/PollBot/pull/333","refsource":"MISC","url":"https://github.com/mozilla/PollBot/pull/333"},{"name":"https://github.com/mozilla/PollBot/commit/6db74a4fcbff258c7cdf51a6ff0724fc10c485e5","refsource":"MISC","url":"https://github.com/mozilla/PollBot/commit/6db74a4fcbff258c7cdf51a6ff0724fc10c485e5"}]},"source":{"advisory":"GHSA-jhgx-wmq8-jc24","discovery":"UNKNOWN"}},"nvd":{"publishedDate":"2021-03-08 19:15:00","lastModifiedDate":"2021-03-12 15:21:00","problem_types":["CWE-601"],"metrics":{"baseMetricV3":{"cvssV3":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N","attackVector":"NETWORK","attackComplexity":"LOW","privilegesRequired":"NONE","userInteraction":"REQUIRED","scope":"CHANGED","confidentialityImpact":"LOW","integrityImpact":"LOW","availabilityImpact":"NONE","baseScore":6.1,"baseSeverity":"MEDIUM"},"exploitabilityScore":2.8,"impactScore":2.7},"baseMetricV2":{"cvssV2":{"version":"2.0","vectorString":"AV:N/AC:M/Au:N/C:P/I:P/A:N","accessVector":"NETWORK","accessComplexity":"MEDIUM","authentication":"NONE","confidentialityImpact":"PARTIAL","integrityImpact":"PARTIAL","availabilityImpact":"NONE","baseScore":5.8},"severity":"MEDIUM","exploitabilityScore":8.6,"impactScore":4.9,"acInsufInfo":false,"obtainAllPrivilege":false,"obtainUserPrivilege":false,"obtainOtherPrivilege":false,"userInteractionRequired":true}},"configurations":{"CVE_data_version":"4.0","nodes":[{"operator":"OR","children":[],"cpe_match":[{"vulnerable":true,"cpe23Uri":"cpe:2.3:a:mozilla:pollbot:*:*:*:*:*:*:*:*","versionEndExcluding":"1.4.4","cpe_name":[]}]}]}},"legacy_mitre":{"record":{"CveYear":"2021","CveId":"21354","Ordinal":"195480","Title":"CVE-2021-21354","CVE":"CVE-2021-21354","Year":"2021"},"notes":[{"CveYear":"2021","CveId":"21354","Ordinal":"1","NoteData":"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/\". 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