{"schema_version":1,"title":"mail (RubyGems) vulnerabilities","summary":"Junglewise Threat Intelligence has tracked 5 vulnerabilities in mail (RubyGems): 0 in the last 7 days and 1 in the last 90 days, 0 of them critical and 0 exploited in the wild. The most recent, CVE-2026-63435, was published on 1 September 2026.","url":"https://junglewise.ai/threats/technologies/mail","json_url":"https://junglewise.ai/threats/technologies/mail.json","publisher":"Junglewise Threat Intelligence","license":"CC-BY-4.0","license_url":"https://creativecommons.org/licenses/by/4.0/","attribution":"Junglewise Threat Intelligence, https://junglewise.ai/threats/technologies/mail","sources":"NVD, GitHub Security Advisories, OSV, the CISA Known Exploited Vulnerabilities catalog, FIRST EPSS and vendor advisories","kind":"technology","counts":{"high":0,"all_time":5,"critical":0,"exploited":0,"last_7_days":0,"last_30_days":1,"last_90_days":1,"last_365_days":1},"latest":[{"cve":"CVE-2026-63435","cvss":5.3,"epss":0.0045,"slug":"cve-2026-63435-mail-email-address-spoofing-via-malformed-rfc-2047-encoded-words","title":"Mail is an internet library for Ruby designed to handle email generation, parsing, and sending. Prior to 2.9.1, Mail::Utilities.q_value_deco","severity":"medium","exploited":false,"published_at":"2026-09-01T21:18:35.287+00:00","url":"https://junglewise.ai/threats/cve-2026-63435-mail-email-address-spoofing-via-malformed-rfc-2047-encoded-words"},{"cve":"CVE-2012-2140","epss":0.0447,"slug":"cve-2012-2140-mail-gem-improper-input-validation-vulnerability","title":"Mail Gem Improper Input Validation vulnerability","severity":"info","exploited":false,"published_at":"2017-10-24T18:33:38+00:00","url":"https://junglewise.ai/threats/cve-2012-2140-mail-gem-improper-input-validation-vulnerability"},{"cve":"CVE-2012-2139","epss":0.0492,"slug":"cve-2012-2139-mail-gem-path-traversal-vulnerability","title":"Mail Gem Path Traversal vulnerability","severity":"info","exploited":false,"published_at":"2017-10-24T18:33:38+00:00","url":"https://junglewise.ai/threats/cve-2012-2139-mail-gem-path-traversal-vulnerability"},{"cve":"CVE-2011-0739","epss":0.0271,"slug":"cve-2011-0739-mail-improper-input-validation-vulnerability","title":"Mail Improper Input Validation vulnerability","severity":"info","exploited":false,"published_at":"2017-10-24T18:33:38+00:00","url":"https://junglewise.ai/threats/cve-2011-0739-mail-improper-input-validation-vulnerability"},{"cve":"CVE-2015-9097","cvss":3,"epss":0.034,"slug":"cve-2015-9097-mail-gem-crlf-injection-vulnerability","title":"Mail Gem CRLF Injection vulnerability","severity":"low","exploited":false,"published_at":"2017-10-24T18:33:36+00:00","url":"https://junglewise.ai/threats/cve-2015-9097-mail-gem-crlf-injection-vulnerability"}],"weekly":[{"week":"2026-07-06","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-07-13","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-07-20","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-07-27","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-08-03","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-08-10","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-08-17","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-08-24","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-08-31","critical":0,"exploited":0,"vulnerabilities":1},{"week":"2026-09-07","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-09-14","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-09-21","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-09-28","critical":0,"exploited":0,"vulnerabilities":0}],"related":[{"name":"nokogiri (RubyGems)","slug":"nokogiri","vulnerabilities":73,"url":"https://junglewise.ai/threats/technologies/nokogiri"},{"name":"rack (RubyGems)","slug":"rack","vulnerabilities":20,"url":"https://junglewise.ai/threats/technologies/rack"},{"name":"camaleon_cms (RubyGems)","slug":"camaleon-cms","vulnerabilities":19,"url":"https://junglewise.ai/threats/technologies/camaleon-cms"},{"name":"rails-html-sanitizer (RubyGems)","slug":"rails-html-sanitizer","vulnerabilities":19,"url":"https://junglewise.ai/threats/technologies/rails-html-sanitizer"},{"name":"actionpack (RubyGems)","slug":"actionpack","vulnerabilities":15,"url":"https://junglewise.ai/threats/technologies/actionpack"},{"name":"publify_core (RubyGems)","slug":"publify-core","vulnerabilities":15,"url":"https://junglewise.ai/threats/technologies/publify-core"},{"name":"rubygems-update (RubyGems)","slug":"rubygems-update","vulnerabilities":15,"url":"https://junglewise.ai/threats/technologies/rubygems-update"},{"name":"loofah (RubyGems)","slug":"loofah","vulnerabilities":14,"url":"https://junglewise.ai/threats/technologies/loofah"},{"name":"fat_free_crm (RubyGems)","slug":"fat-free-crm","vulnerabilities":12,"url":"https://junglewise.ai/threats/technologies/fat-free-crm"},{"name":"passenger (RubyGems)","slug":"passenger","vulnerabilities":12,"url":"https://junglewise.ai/threats/technologies/passenger"},{"name":"oj (RubyGems)","slug":"oj","vulnerabilities":11,"url":"https://junglewise.ai/threats/technologies/oj"},{"name":"openc3 (RubyGems)","slug":"openc3","vulnerabilities":10,"url":"https://junglewise.ai/threats/technologies/openc3"}],"technology":{"hub":true,"name":"mail (RubyGems)","slug":"mail","vendor":{"name":"RubyGems","slug":"rubygems","url":"https://junglewise.ai/threats/vendors/rubygems"},"aliases":[],"description":"Ruby standard library for composing and sending email messages.","url":"https://junglewise.ai/threats/technologies/mail"},"most_severe":[{"cve":"CVE-2026-63435","cvss":5.3,"epss":0.0045,"slug":"cve-2026-63435-mail-email-address-spoofing-via-malformed-rfc-2047-encoded-words","title":"Mail is an internet library for Ruby designed to handle email generation, parsing, and sending. Prior to 2.9.1, Mail::Utilities.q_value_deco","severity":"medium","exploited":false,"published_at":"2026-09-01T21:18:35.287+00:00","url":"https://junglewise.ai/threats/cve-2026-63435-mail-email-address-spoofing-via-malformed-rfc-2047-encoded-words"},{"cve":"CVE-2015-9097","cvss":3,"epss":0.034,"slug":"cve-2015-9097-mail-gem-crlf-injection-vulnerability","title":"Mail Gem CRLF Injection vulnerability","severity":"low","exploited":false,"published_at":"2017-10-24T18:33:36+00:00","url":"https://junglewise.ai/threats/cve-2015-9097-mail-gem-crlf-injection-vulnerability"},{"cve":"CVE-2012-2139","epss":0.0492,"slug":"cve-2012-2139-mail-gem-path-traversal-vulnerability","title":"Mail Gem Path Traversal vulnerability","severity":"info","exploited":false,"published_at":"2017-10-24T18:33:38+00:00","url":"https://junglewise.ai/threats/cve-2012-2139-mail-gem-path-traversal-vulnerability"},{"cve":"CVE-2012-2140","epss":0.0447,"slug":"cve-2012-2140-mail-gem-improper-input-validation-vulnerability","title":"Mail Gem Improper Input Validation vulnerability","severity":"info","exploited":false,"published_at":"2017-10-24T18:33:38+00:00","url":"https://junglewise.ai/threats/cve-2012-2140-mail-gem-improper-input-validation-vulnerability"},{"cve":"CVE-2011-0739","epss":0.0271,"slug":"cve-2011-0739-mail-improper-input-validation-vulnerability","title":"Mail Improper Input Validation vulnerability","severity":"info","exploited":false,"published_at":"2017-10-24T18:33:38+00:00","url":"https://junglewise.ai/threats/cve-2011-0739-mail-improper-input-validation-vulnerability"}],"generated_at":"2026-09-28T03:07:00.154823+00:00"}