{"id":"CVE-2024-47889","aliases":["BIT-rails-2024-47889","DEBIAN-CVE-2024-47889","DLA-4383-1","DSA-5881-1","EUVD-2024-3051","GHSA-h47h-mwp9-c6q6","OESA-2024-2383","SUSE-SU-2024:3878-1","UBUNTU-CVE-2024-47889","USN-7290-1","openSUSE-SU-2024:14471-1","openSUSE-SU-2024:14479-1","openSUSE-SU-2025:15109-1","openSUSE-SU-2025:15124-1"],"status":"published","title":"Action Mailer has possible ReDoS vulnerability in block_format","description":"Action Mailer is a framework for designing email service layers. Starting in version 3.0.0 and prior to versions 6.1.7.9, 7.0.8.5, 7.1.4.1, and 7.2.1.1, there is a possible ReDoS vulnerability in the block_format helper in Action Mailer. Carefully crafted text can cause the block_format helper to take an unexpected amount of time, possibly resulting in a DoS vulnerability. All users running an affected release should either upgrade to versions 6.1.7.9, 7.0.8.5, 7.1.4.1, or 7.2.1.1 or apply the relevant patch immediately. As a workaround, users can avoid calling the `block_format` helper or upgrade to Ruby 3.2. Ruby 3.2 has mitigations for this problem, so Rails applications using Ruby 3.2 or newer are unaffected. Rails 8.0.0.beta1 requires Ruby 3.2 or greater so is unaffected.","severity":{"version":"4.0","score":6.6,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U","level":"medium","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-11","score":0.00937,"percentile":0.61285,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-1333"],"published":"2024-10-15T23:35:38Z","modified":"2026-11-02T12:02:52Z","fixes":[{"ecosystem":"RubyGems","package":"actionmailer","fixed_in":["6.1.7.9","7.0.8.5","7.1.4.1","7.2.1.1"],"sources":["ghsa","osv"]},{"ecosystem":"Bitnami","package":"rails","fixed_in":["6.1.8","7.0.9","7.1.4","7.2.2"],"sources":["osv"]},{"ecosystem":"Debian:12","package":"rails","fixed_in":["2:6.1.7.10+dfsg-1~deb12u1"],"sources":["osv"]},{"ecosystem":"Debian:13","package":"rails","fixed_in":["2:7.2.2.1+dfsg-1"],"sources":["osv"]},{"ecosystem":"Debian:14","package":"rails","fixed_in":["2:7.2.2.1+dfsg-1"],"sources":["osv"]},{"ecosystem":"openEuler:22.03-LTS-SP4","package":"rubygem-actionmailer","fixed_in":["6.1.4.1-2.oe2203sp4"],"sources":["osv"]},{"ecosystem":"openEuler:22.03-LTS-SP3","package":"rubygem-actionmailer","fixed_in":["6.1.4.1-2.oe2203sp3"],"sources":["osv"]},{"ecosystem":"openEuler:20.03-LTS-SP4","package":"rubygem-actionmailer","fixed_in":["5.2.4.4-2.oe2003sp4"],"sources":["osv"]},{"ecosystem":"openEuler:22.03-LTS-SP1","package":"rubygem-actionmailer","fixed_in":["6.1.4.1-2.oe2203sp1"],"sources":["osv"]},{"ecosystem":"openEuler:24.03-LTS","package":"rubygem-actionmailer","fixed_in":["7.0.7-2.oe2403"],"sources":["osv"]},{"ecosystem":"SUSE:Linux 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Mailer has possible ReDoS vulnerability in block_format","description":"Action Mailer is a framework for designing email service layers. Starting in version 3.0.0 and prior to versions 6.1.7.9, 7.0.8.5, 7.1.4.1, and 7.2.1.1, there is a possible ReDoS vulnerability in the block_format helper in Action Mailer. Carefully crafted text can cause the block_format helper to take an unexpected amount of time, possibly resulting in a DoS vulnerability. All users running an affected release should either upgrade to versions 6.1.7.9, 7.0.8.5, 7.1.4.1, or 7.2.1.1 or apply the relevant patch immediately. As a workaround, users can avoid calling the `block_format` helper or upgrade to Ruby 3.2. Ruby 3.2 has mitigations for this problem, so Rails applications using Ruby 3.2 or newer are unaffected. Rails 8.0.0.beta1 requires Ruby 3.2 or greater so is unaffected.","status":"published","published":"2024-10-16T20:55:33.958Z","modified":"2024-10-17T16:31:00.794Z","cvss":[{"version":"4.0","score":6.6,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U","level":"medium","assessor":"cna"}],"cwes":["CWE-1333"],"updated_at":"2026-11-02T14:33:57.638551Z"}],"euvd":[{"id":"EUVD-2024-3051","description":"Action Mailer is a framework for designing email service layers. Starting in version 3.0.0 and prior to versions 6.1.7.9, 7.0.8.5, 7.1.4.1, and 7.2.1.1, there is a possible ReDoS vulnerability in the block_format helper in Action Mailer. Carefully crafted text can cause the block_format helper to take an unexpected amount of time, possibly resulting in a DoS vulnerability. All users running an affected release should either upgrade to versions 6.1.7.9, 7.0.8.5, 7.1.4.1, or 7.2.1.1 or apply the relevant patch immediately. As a workaround, users can avoid calling the `block_format` helper or upgrade to Ruby 3.2. Ruby 3.2 has mitigations for this problem, so Rails applications using Ruby 3.2 or newer are unaffected. Rails 8.0.0.beta1 requires Ruby 3.2 or greater so is unaffected.","status":"published","published":"2024-10-16T20:55:33Z","modified":"2024-10-17T16:31:00Z","cvss":[{"version":"4.0","score":6.6,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U","level":"medium"}],"updated_at":"2026-11-03T00:27:33.799805Z"}],"ghsa":[{"id":"GHSA-h47h-mwp9-c6q6","title":"Possible ReDoS vulnerability in block_format in Action Mailer","description":"There is a possible ReDoS vulnerability in the block_format helper in Action Mailer. This vulnerability has been assigned the CVE identifier CVE-2024-47889.\n\nImpact\n------\n\nCarefully crafted text can cause the block_format helper to take an unexpected amount of time, possibly resulting in a DoS vulnerability. All users running an affected release should either upgrade or apply the relevant patch immediately.\n\nRuby 3.2 has mitigations for this problem, so Rails applications using Ruby 3.2 or newer are unaffected. Rails 8.0.0.beta1 requires Ruby 3.2 or greater so is unaffected.\n\n\nReleases\n--------\nThe fixed releases are available at the normal locations.\n\nWorkarounds\n-----------\nUsers can avoid calling the `block_format` helper or upgrade to Ruby 3.2\n\nCredits\n-------\n\nThanks to yuki_osaki for the report!","status":"published","published":"2024-10-15T23:35:38Z","modified":"2025-01-07T21:47:37Z","cvss":[{"version":"4.0","score":6.6,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U","level":"medium"}],"cwes":["CWE-1333"],"updated_at":"2026-11-02T14:38:26.167657Z"}],"nvd":[{"id":"CVE-2024-47889","description":"Action Mailer is a framework for designing email service layers. Starting in version 3.0.0 and prior to versions 6.1.7.9, 7.0.8.5, 7.1.4.1, and 7.2.1.1, there is a possible ReDoS vulnerability in the block_format helper in Action Mailer. Carefully crafted text can cause the block_format helper to take an unexpected amount of time, possibly resulting in a DoS vulnerability. All users running an affected release should either upgrade to versions 6.1.7.9, 7.0.8.5, 7.1.4.1, or 7.2.1.1 or apply the relevant patch immediately. As a workaround, users can avoid calling the `block_format` helper or upgrade to Ruby 3.2. Ruby 3.2 has mitigations for this problem, so Rails applications using Ruby 3.2 or newer are unaffected. Rails 8.0.0.beta1 requires Ruby 3.2 or greater so is unaffected.","status":"published","published":"2024-10-16T21:15:13.32Z","modified":"2026-06-17T07:57:55.66Z","cvss":[{"version":"4.0","score":6.6,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","level":"medium","assessor":"secondary"}],"cwes":["CWE-1333"],"updated_at":"2026-11-02T14:10:32.45889Z"}],"osv":[{"id":"CVE-2024-47889","title":"Action Mailer has possible ReDoS vulnerability in block_format","description":"Action Mailer is a framework for designing email service layers. Starting in version 3.0.0 and prior to versions 6.1.7.9, 7.0.8.5, 7.1.4.1, and 7.2.1.1, there is a possible ReDoS vulnerability in the block_format helper in Action Mailer. Carefully crafted text can cause the block_format helper to take an unexpected amount of time, possibly resulting in a DoS vulnerability. All users running an affected release should either upgrade to versions 6.1.7.9, 7.0.8.5, 7.1.4.1, or 7.2.1.1 or apply the relevant patch immediately. As a workaround, users can avoid calling the `block_format` helper or upgrade to Ruby 3.2. Ruby 3.2 has mitigations for this problem, so Rails applications using Ruby 3.2 or newer are unaffected. Rails 8.0.0.beta1 requires Ruby 3.2 or greater so is unaffected.","status":"published","published":"2024-10-16T20:55:33.958Z","modified":"2026-10-28T02:30:50.354437915Z","cvss":[{"version":"4.0","score":6.6,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U","level":"medium"}],"cwes":["CWE-1333"],"updated_at":"2026-11-02T15:44:43.253252Z"},{"id":"DEBIAN-CVE-2024-47889","description":"Action Mailer is a framework for designing email service layers. Starting in version 3.0.0 and prior to versions 6.1.7.9, 7.0.8.5, 7.1.4.1, and 7.2.1.1, there is a possible ReDoS vulnerability in the block_format helper in Action Mailer. Carefully crafted text can cause the block_format helper to take an unexpected amount of time, possibly resulting in a DoS vulnerability. All users running an affected release should either upgrade to versions 6.1.7.9, 7.0.8.5, 7.1.4.1, or 7.2.1.1 or apply the relevant patch immediately. As a workaround, users can avoid calling the `block_format` helper or upgrade to Ruby 3.2. Ruby 3.2 has mitigations for this problem, so Rails applications using Ruby 3.2 or newer are unaffected. Rails 8.0.0.beta1 requires Ruby 3.2 or greater so is unaffected.","status":"published","published":"2024-10-16T21:15:13.32Z","modified":"2026-11-02T12:02:52.511061947Z","cvss":[{"version":"4.0","score":6.6,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","level":"medium"}],"updated_at":"2026-11-02T15:45:43.798789Z"},{"id":"GHSA-h47h-mwp9-c6q6","title":"Possible ReDoS vulnerability in block_format in Action Mailer","description":"There is a possible ReDoS vulnerability in the block_format helper in Action Mailer. This vulnerability has been assigned the CVE identifier CVE-2024-47889.\n\nImpact\n------\n\nCarefully crafted text can cause the block_format helper to take an unexpected amount of time, possibly resulting in a DoS vulnerability. All users running an affected release should either upgrade or apply the relevant patch immediately.\n\nRuby 3.2 has mitigations for this problem, so Rails applications using Ruby 3.2 or newer are unaffected. Rails 8.0.0.beta1 requires Ruby 3.2 or greater so is unaffected.\n\n\nReleases\n--------\nThe fixed releases are available at the normal locations.\n\nWorkarounds\n-----------\nUsers can avoid calling the `block_format` helper or upgrade to Ruby 3.2\n\nCredits\n-------\n\nThanks to yuki_osaki for the report!","status":"published","published":"2024-10-15T23:35:38Z","modified":"2025-01-07T21:52:28.561887Z","cvss":[{"version":"4.0","score":6.6,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U","level":"medium"}],"cwes":["CWE-1333"],"updated_at":"2026-11-02T15:46:48.546324Z"},{"id":"OESA-2024-2383","title":"rubygem-actionmailer security update","description":"Email on Rails. Compose, deliver, and test emails using the familiar controller/view pattern. First-class support for multipart email and attachments.\r\n\r\nSecurity Fix(es):\r\n\r\nAction Mailer is a framework for designing email service layers. Starting in version 3.0.0 and prior to versions 6.1.7.9, 7.0.8.5, 7.1.4.1, and 7.2.1.1, there is a possible ReDoS vulnerability in the block_format helper in Action Mailer. Carefully crafted text can cause the block_format helper to take an unexpected amount of time, possibly resulting in a DoS vulnerability. All users running an affected release should either upgrade to versions 6.1.7.9, 7.0.8.5, 7.1.4.1, or 7.2.1.1 or apply the relevant patch immediately. As a workaround, users can avoid calling the `block_format` helper or upgrade to Ruby 3.2. Ruby 3.2 has mitigations for this problem, so Rails applications using Ruby 3.2 or newer are unaffected. Rails 8.0.0.beta1 requires Ruby 3.2 or greater so is unaffected.(CVE-2024-47889)","status":"published","published":"2024-11-15T11:07:51Z","modified":"2026-08-18T01:18:34.639092307Z","cvss":[{"version":"3.1","score":3.7,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L","level":"low"}],"updated_at":"2026-11-02T15:52:42.253598Z"},{"id":"UBUNTU-CVE-2024-47889","description":"Action Mailer is a framework for designing email service layers. Starting in version 3.0.0 and prior to versions 6.1.7.9, 7.0.8.5, 7.1.4.1, and 7.2.1.1, there is a possible ReDoS vulnerability in the block_format helper in Action Mailer. Carefully crafted text can cause the block_format helper to take an unexpected amount of time, possibly resulting in a DoS vulnerability. All users running an affected release should either upgrade to versions 6.1.7.9, 7.0.8.5, 7.1.4.1, or 7.2.1.1 or apply the relevant patch immediately. As a workaround, users can avoid calling the `block_format` helper or upgrade to Ruby 3.2. Ruby 3.2 has mitigations for this problem, so Rails applications using Ruby 3.2 or newer are unaffected. Rails 8.0.0.beta1 requires Ruby 3.2 or greater so is unaffected.","status":"published","published":"2024-10-16T21:15:00Z","modified":"2026-10-17T12:56:45.525406323Z","cvss":[{"version":"4.0","score":6.6,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U","level":"medium"}],"updated_at":"2026-11-02T16:55:06.818511Z"},{"id":"BIT-rails-2024-47889","title":"Action Mailer has possible ReDoS vulnerability in block_format","description":"Action Mailer is a framework for designing email service layers. Starting in version 3.0.0 and prior to versions 6.1.7.9, 7.0.8.5, 7.1.4.1, and 7.2.1.1, there is a possible ReDoS vulnerability in the block_format helper in Action Mailer. Carefully crafted text can cause the block_format helper to take an unexpected amount of time, possibly resulting in a DoS vulnerability. All users running an affected release should either upgrade to versions 6.1.7.9, 7.0.8.5, 7.1.4.1, or 7.2.1.1 or apply the relevant patch immediately. As a workaround, users can avoid calling the `block_format` helper or upgrade to Ruby 3.2. Ruby 3.2 has mitigations for this problem, so Rails applications using Ruby 3.2 or newer are unaffected. Rails 8.0.0.beta1 requires Ruby 3.2 or greater so is unaffected.","status":"published","published":"2025-04-14T11:27:09.648Z","modified":"2025-05-20T10:02:07.006Z","updated_at":"2026-11-02T15:28:35.111822Z"},{"id":"DLA-4383-1","title":"rails - security update","status":"published","published":"2025-11-25T00:00:00Z","modified":"2025-11-25T20:17:54.333042Z","updated_at":"2026-11-02T15:46:12.7027Z"},{"id":"DSA-5881-1","title":"rails - security update","status":"published","published":"2025-03-17T00:00:00Z","modified":"2026-03-09T02:09:54.381319Z","updated_at":"2026-11-02T15:46:17.892347Z"},{"id":"openSUSE-SU-2024:14471-1","title":"ruby3.3-rubygem-actionmailer-7.0-7.0.8.6-1.1 on GA media","description":"These are all security issues fixed in the ruby3.3-rubygem-actionmailer-7.0-7.0.8.6-1.1 package on the GA media of openSUSE Tumbleweed.","status":"published","published":"2024-11-07T00:00:00Z","modified":"2026-02-04T04:38:02.905074Z","updated_at":"2026-11-02T16:58:36.976155Z"},{"id":"openSUSE-SU-2024:14479-1","title":"ruby3.3-rubygem-rails-7.0-7.0.8.6-1.1 on GA media","description":"These are all security issues fixed in the ruby3.3-rubygem-rails-7.0-7.0.8.6-1.1 package on the GA media of openSUSE Tumbleweed.","status":"published","published":"2024-11-08T00:00:00Z","modified":"2026-02-04T02:57:49.056874Z","updated_at":"2026-11-02T16:58:36.976155Z"},{"id":"openSUSE-SU-2025:15109-1","title":"ruby3.4-rubygem-actionmailer-7.0-7.0.8.6-1.3 on GA media","description":"These are all security issues fixed in the ruby3.4-rubygem-actionmailer-7.0-7.0.8.6-1.3 package on the GA media of openSUSE Tumbleweed.","status":"published","published":"2025-05-17T00:00:00Z","modified":"2026-02-04T03:10:38.067217Z","updated_at":"2026-11-02T16:58:37.399567Z"},{"id":"openSUSE-SU-2025:15124-1","title":"ruby3.4-rubygem-rails-7.0-7.0.8.6-1.3 on GA media","description":"These are all security issues fixed in the ruby3.4-rubygem-rails-7.0-7.0.8.6-1.3 package on the GA media of openSUSE Tumbleweed.","status":"published","published":"2025-05-17T00:00:00Z","modified":"2026-02-04T03:52:20.531012Z","updated_at":"2026-11-02T16:58:37.399567Z"},{"id":"SUSE-SU-2024:3878-1","title":"Security update for rubygem-actionmailer-5_1","description":"This update for rubygem-actionmailer-5_1 fixes the following issues:\n\n- CVE-2024-47889: Fixed Possible ReDoS vulnerability in block_format in Action Mailer (bsc#1231723).\n","status":"published","published":"2024-11-01T15:32:27Z","modified":"2026-02-04T03:19:44.818754Z","updated_at":"2026-11-02T15:53:55.639015Z"},{"id":"USN-7290-1","title":"rails vulnerabilities","description":"It was discovered that Rails did not correctly handle parsing block\nformats in email service layers. An attacker could possibly use this\nissue to cause a denial of service. (CVE-2024-47889)\n\nIt was discovered that Rails did not correctly handle parsing block\nquotes in rich text content. An attacker could possibly use this issue\nto cause a denial of service. This issue only affected Ubuntu 22.04 LTS.\n(CVE-2024-47888)\n\nIt was discovered that Rails did not correctly handle parsing HTTP\ntoken authentication headers. An attacker could possibly use this\nissue to cause a denial of service. (CVE-2024-47887)\n\nIt was discovered that Rails did not correctly handle parsing query\nparameters in web requests. An attacker could possibly use this issue\nto cause a denial of service. (CVE-2024-41128)\n","status":"published","published":"2025-02-25T14:31:52Z","modified":"2026-06-25T13:32:30.219718571Z","updated_at":"2026-11-02T16:58:18.876384Z"}]}}