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Input Validation\nThe deliver function in the sendmail delivery agent (lib/mail/network/delivery_methods/sendmail.rb) in Ruby Mail gem allows remote attackers to execute arbitrary commands via shell metacharacters in an e-mail address.","references":[{"reference_url":"http://groups.google.com/group/mail-ruby/browse_thread/thread/e93bbd05706478dd?pli=1","reference_id":"","reference_type":"","scores":[{"value":"MODERATE","scoring_system":"generic_textual","scoring_elements":""}],"url":"http://groups.google.com/group/mail-ruby/browse_thread/thread/e93bbd05706478dd?pli=1"},{"reference_url":"https://api.first.org/data/v1/epss?cve=CVE-2011-0739","reference_id":"","reference_type":"","scores":[{"value":"0.00749","scoring_system":"epss","scoring_elements":"0.73421","published_at":"2026-05-30T12:55:00Z"}],"url":"https://api.first.org/data/v1/epss?cve=CVE-2011-0739"},{"reference_url":"https://exchange.xforce.ibmcloud.com/vulnerabilities/65010","reference_id":"","reference_type":"","scores":[{"value":"MODERATE","scoring_system":"generic_textual","scoring_elements":""}],"url":"https://exchange.xforce.ibmcloud.com/vulnerabilities/65010"},{"reference_url":"https://github.com/mikel/mail","reference_id":"","reference_type":"","scores":[{"value":"MODERATE","scoring_system":"generic_textual","scoring_elements":""}],"url":"https://github.com/mikel/mail"},{"reference_url":"https://github.com/mikel/mail/raw/master/patches/20110126_sendmail.patch","reference_id":"","reference_type":"","scores":[{"value":"MODERATE","scoring_system":"generic_textual","scoring_elements":""}],"url":"https://github.com/mikel/mail/raw/master/patches/20110126_sendmail.patch"},{"reference_url":"https://web.archive.org/web/20200228225346/http://www.securityfocus.com/bid/46021","reference_id":"","reference_type":"","scores":[{"value":"MODERATE","scoring_system":"generic_textual","scoring_elements":""}],"url":"https://web.archive.org/web/20200228225346/http://www.securityfocus.com/bid/46021"},{"reference_url":"https://nvd.nist.gov/vuln/detail/CVE-2011-0739","reference_id":"CVE-2011-0739","reference_type":"","scores":[{"value":"MODERATE","scoring_system":"generic_textual","scoring_elements":""}],"url":"https://nvd.nist.gov/vuln/detail/CVE-2011-0739"},{"reference_url":"https://github.com/rubysec/ruby-advisory-db/blob/master/gems/mail/CVE-2011-0739.yml","reference_id":"CVE-2011-0739.YML","reference_type":"","scores":[{"value":"MODERATE","scoring_system":"generic_textual","scoring_elements":""}],"url":"https://github.com/rubysec/ruby-advisory-db/blob/master/gems/mail/CVE-2011-0739.yml"},{"reference_url":"https://github.com/advisories/GHSA-cpjc-p7fc-j9xh","reference_id":"GHSA-cpjc-p7fc-j9xh","reference_type":"","scores":[{"value":"MODERATE","scoring_system":"cvssv3.1_qr","scoring_elements":""}],"url":"https://github.com/advisories/GHSA-cpjc-p7fc-j9xh"}],"fixed_packages":[{"url":"http://public2.vulnerablecode.io/api/packages/50094?format=json","purl":"pkg:gem/mail@2.2.15","is_vulnerable":true,"affected_by_vulnerabilities":[{"vulnerability":"VCID-f4sz-rqp7-6ydb"},{"vulnerability":"VCID-pgqp-64zv-8fc3"},{"vulnerability":"VCID-q6zt-ft1w-8ka1"}],"resource_url":"http://public2.vulnerablecode.io/packages/pkg:gem/mail@2.2.15"}],"aliases":["CVE-2011-0739","GHSA-cpjc-p7fc-j9xh","OSV-70667"],"risk_score":3.1,"exploitability":"0.5","weighted_severity":"6.2","resource_url":"http://public2.vulnerablecode.io/vulnerabilities/VCID-gskv-mehm-gydz"},{"url":"http://public2.vulnerablecode.io/api/vulnerabilities/11426?format=json","vulnerability_id":"VCID-pgqp-64zv-8fc3","summary":"SMTP Injection via to/from addresses\nThe mail package does not disallow CRLF in email addresses; an attacker can inject SMTP commands in specially crafted email addresses passed to `RCPT TO` and `MAIL FROM`.","references":[{"reference_url":"http://openwall.com/lists/oss-security/2015/12/11/3","reference_id":"","reference_type":"","scores":[{"value":"6.1","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N"},{"value":"MODERATE","scoring_system":"generic_textual","scoring_elements":""}],"url":"http://openwall.com/lists/oss-security/2015/12/11/3"},{"reference_url":"https://api.first.org/data/v1/epss?cve=CVE-2015-9097","reference_id":"","reference_type":"","scores":[{"value":"0.01021","scoring_system":"epss","scoring_elements":"0.77536","published_at":"2026-05-30T12:55:00Z"}],"url":"https://api.first.org/data/v1/epss?cve=CVE-2015-9097"},{"reference_url":"https://github.com/mikel/mail","reference_id":"","reference_type":"","scores":[{"value":"6.1","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N"},{"value":"MODERATE","scoring_system":"generic_textual","scoring_elements":""}],"url":"https://github.com/mikel/mail"},{"reference_url":"https://github.com/mikel/mail/commit/72befdc4dab3e6e288ce226a7da2aa474cf5be83","reference_id":"","reference_type":"","scores":[{"value":"6.1","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N"},{"value":"MODERATE","scoring_system":"generic_textual","scoring_elements":""}],"url":"https://github.com/mikel/mail/commit/72befdc4dab3e6e288ce226a7da2aa474cf5be83"},{"reference_url":"https://github.com/mikel/mail/pull/1097","reference_id":"","reference_type":"","scores":[{"value":"6.1","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N"},{"value":"MODERATE","scoring_system":"generic_textual","scoring_elements":""}],"url":"https://github.com/mikel/mail/pull/1097"},{"reference_url":"https://github.com/rubysec/ruby-advisory-db/issues/215","reference_id":"","reference_type":"","scores":[{"value":"6.1","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N"},{"value":"MODERATE","scoring_system":"generic_textual","scoring_elements":""}],"url":"https://github.com/rubysec/ruby-advisory-db/issues/215"},{"reference_url":"https://hackerone.com/reports/137631","reference_id":"","reference_type":"","scores":[{"value":"6.1","scoring_system":"cvssv3","scoring_elements":""},{"value":"6.1","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N"},{"value":"MODERATE","scoring_system":"generic_textual","scoring_elements":""}],"url":"https://hackerone.com/reports/137631"},{"reference_url":"https://rubysec.com/advisories/mail-OSVDB-131677","reference_id":"","reference_type":"","scores":[{"value":"6.1","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N"},{"value":"MODERATE","scoring_system":"generic_textual","scoring_elements":""}],"url":"https://rubysec.com/advisories/mail-OSVDB-131677"},{"reference_url":"http://www.mbsd.jp/Whitepaper/smtpi.pdf","reference_id":"","reference_type":"","scores":[{"value":"6.1","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N"},{"value":"MODERATE","scoring_system":"generic_textual","scoring_elements":""}],"url":"http://www.mbsd.jp/Whitepaper/smtpi.pdf"},{"reference_url":"https://nvd.nist.gov/vuln/detail/CVE-2015-9097","reference_id":"CVE-2015-9097","reference_type":"","scores":[{"value":"6.1","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N"},{"value":"MODERATE","scoring_system":"generic_textual","scoring_elements":""}],"url":"https://nvd.nist.gov/vuln/detail/CVE-2015-9097"},{"reference_url":"https://github.com/advisories/GHSA-q86f-fmqf-qrf6","reference_id":"GHSA-q86f-fmqf-qrf6","reference_type":"","scores":[{"value":"6.1","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N"},{"value":"MODERATE","scoring_system":"cvssv3.1_qr","scoring_elements":""},{"value":"MODERATE","scoring_system":"generic_textual","scoring_elements":""}],"url":"https://github.com/advisories/GHSA-q86f-fmqf-qrf6"}],"fixed_packages":[{"url":"http://public2.vulnerablecode.io/api/packages/52662?format=json","purl":"pkg:gem/mail@2.5.5.rc1","is_vulnerable":false,"affected_by_vulnerabilities":[],"resource_url":"http://public2.vulnerablecode.io/packages/pkg:gem/mail@2.5.5.rc1"},{"url":"http://public2.vulnerablecode.io/api/packages/73707?format=json","purl":"pkg:gem/mail@2.5.5","is_vulnerable":false,"affected_by_vulnerabilities":[],"resource_url":"http://public2.vulnerablecode.io/packages/pkg:gem/mail@2.5.5"},{"url":"http://public2.vulnerablecode.io/api/packages/52663?format=json","purl":"pkg:gem/mail@2.6.6.rc1","is_vulnerable":false,"affected_by_vulnerabilities":[],"resource_url":"http://public2.vulnerablecode.io/packages/pkg:gem/mail@2.6.6.rc1"},{"url":"http://public2.vulnerablecode.io/api/packages/52664?format=json","purl":"pkg:gem/mail@2.7.0.rc1","is_vulnerable":false,"affected_by_vulnerabilities":[],"resourc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Limitation of a Pathname to a Restricted Directory ('Path Traversal')\nDirectory traversal vulnerability in lib/mail/network/delivery_methods/file_delivery.rb in the Mail gem for Ruby allows remote attackers to read arbitrary files via a .. 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