{"id":"CVE-2026-48920","aliases":["EUVD-2026-32511","GHSA-mq58-m26g-46gp"],"status":"published","title":"Jenkins Email Extension Plugin: Attackers able to control email content may specify `file:` URLs for images to read arbitrary files from Jenkins controller filesystem","description":"Jenkins Email Extension Plugin 1933.v45cec755423f and earlier allows inlining images as `base64` in email content by setting the `data-inline` attribute, without restrictions on the image URLs that can be inlined, allowing attackers able to control the email content to specify `file:` URLs for images to read arbitrary files from the Jenkins controller filesystem.","severity":{"version":"3.1","score":8.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","level":"high","assessor":"adp","from":"cve"},"epss":{"day":"2026-11-11","score":0.00288,"percentile":0.21572,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-73"],"published":"2026-05-27T14:13:48Z","modified":"2026-10-24T10:30:53Z","fixes":[{"ecosystem":"Maven","package":"org.jenkins-ci.plugins:email-ext","fixed_in":["1933.1935.v276319e3cc47"],"sources":["ghsa","osv"]}],"affected":[{"source":"ghsa","ecosystem":"Maven","package":"org.jenkins-ci.plugins:email-ext","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1933.1935.v276319e3cc47"}]}]},{"source":"osv","ecosystem":"Maven","package":"org.jenkins-ci.plugins:email-ext","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1933.1935.v276319e3cc47"}]}],"versions":["1806.v856a_01a_fa_39a_","1814.v404722f34263","1844.v3ea_a_b_842374a_","1849.v6dd03b_f6e423","1851.v2b_5345e6272d","1855.vd9e491cb_de1e","1861.vdb_d991590994","1866.v14fa_6d201654","1876.v28d8d38315b_d","1911.v19b_8e86f9815","1916.vc954a_f86ff21","1922.v5c93c9e80a_f9","1925.v1598902b_58dd","1933.v45cec755423f","2.100","2.101","2.102","2.103","2.104","2.105","2.11","2.12","2.13","2.14","2.14.1","2.15","2.16","2.18","2.19","2.20","2.21","2.22","2.24.1","2.25","2.27","2.27.1","2.28","2.29","2.30","2.30.1","2.30.2","2.31","2.32","2.33","2.34","2.35","2.35.1","2.36","2.37","2.37.1","2.37.2","2.37.2.2","2.38","2.38.1","2.38.2","2.39","2.39.3","2.40","2.40-beta","2.40.1","2.40.2","2.40.3","2.40.4","2.40.5","2.41","2.41.2","2.41.3","2.42","2.43","2.44","2.45","2.46","2.47","2.50","2.51","2.52","2.53","2.54","2.55","2.56","2.57","2.57.1","2.57.2","2.58","2.59","2.60","2.61","2.62","2.62.1","2.63","2.64","2.65","2.66","2.68","2.68.1","2.68.2","2.69","2.69.1","2.69.2","2.71","2.72","2.73","2.74","2.75","2.76","2.77","2.78","2.79","2.80","2.81","2.82","2.83","2.84","2.85","2.86","2.87","2.88","2.89","2.89.0.1","2.89.0.2","2.89.1","2.90","2.91","2.92","2.93","2.93.1","2.94","2.95","2.96","2.96.1","2.97","2.98","2.99"]}],"products":[{"vendor":"jenkins","product":"email_extension"},{"vendor":"jenkins project","product":"jenkins email extension plugin"}],"references":[{"url":"https://www.jenkins.io/security/advisory/2026-05-27/#SECURITY-3705","tags":["vendor-advisory","Vendor Advisory","advisory","web"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-48920","tags":["advisory"]},{"url":"https://github.com/advisories/GHSA-mq58-m26g-46gp"},{"url":"https://github.com/jenkinsci/email-ext-plugin","tags":["package"]}],"sources":{"cve":[{"id":"CVE-2026-48920","description":"Jenkins Email Extension Plugin 1933.v45cec755423f and earlier allows inlining images as `base64` in email content by setting the `data-inline` attribute, without restrictions on the image URLs that can be inlined, allowing attackers able to control the email content to specify `file:` URLs for images to read arbitrary files from the Jenkins controller filesystem.","status":"published","published":"2026-05-27T14:13:48.568Z","modified":"2026-05-27T15:43:07.808Z","cvss":[{"version":"3.1","score":8.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","level":"high","assessor":"adp"}],"cwes":["CWE-73"],"updated_at":"2026-11-02T13:50:49.872037Z"}],"euvd":[{"id":"EUVD-2026-32511","description":"Jenkins Email Extension Plugin 1933.v45cec755423f and earlier allows inlining images as `base64` in email content by setting the `data-inline` attribute, without restrictions on the image URLs that can be inlined, allowing attackers able to control the email content to specify `file:` URLs for images to read arbitrary files from the Jenkins controller filesystem.","status":"published","published":"2026-05-27T14:13:48Z","modified":"2026-05-27T15:43:07Z","cvss":[{"version":"3.1","score":8.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","level":"high"}],"updated_at":"2026-11-02T18:21:03.926243Z"}],"ghsa":[{"id":"GHSA-mq58-m26g-46gp","title":"Jenkins Email Extension Plugin: Attackers able to control email content may specify `file:` URLs for images to read arbitrary files from Jenkins controller filesystem","description":"Jenkins Email Extension Plugin 1933.v45cec755423f and earlier includes a feature that allows inlining images as `base64` in email content by setting the `data-inline` attribute. No restrictions are placed on the image URLs that can be inlined.\n\nThis allows attackers able to control the email content to specify `file:` URLs for images to read arbitrary files from the Jenkins controller filesystem.\n\nThe feature allowing inlining images as `base64` in email content by setting the `data-inline` attribute is removed from Email Extension Plugin 1933.1935.v276319e3cc47.","status":"published","published":"2026-05-27T15:33:26Z","modified":"2026-07-01T19:42:16Z","cvss":[{"version":"3.1","score":8.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","level":"high"}],"cwes":["CWE-73"],"updated_at":"2026-11-02T14:40:36.577366Z"}],"nvd":[{"id":"CVE-2026-48920","description":"Jenkins Email Extension Plugin 1933.v45cec755423f and earlier allows inlining images as `base64` in email content by setting the `data-inline` attribute, without restrictions on the image URLs that can be inlined, allowing attackers able to control the email content to specify `file:` URLs for images to read arbitrary files from the Jenkins controller filesystem.","status":"published","published":"2026-05-27T15:16:31.647Z","modified":"2026-10-14T20:10:00.19Z","cvss":[{"version":"3.1","score":8.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","level":"high","assessor":"secondary"}],"cwes":["CWE-73"],"updated_at":"2026-11-02T14:12:20.885865Z"}],"osv":[{"id":"CVE-2026-48920","description":"Jenkins Email Extension Plugin 1933.v45cec755423f and earlier allows inlining images as `base64` in email content by setting the `data-inline` attribute, without restrictions on the image URLs that can be inlined, allowing attackers able to control the email content to specify `file:` URLs for images to read arbitrary files from the Jenkins controller filesystem.","status":"published","published":"2026-05-27T15:16:31.647Z","modified":"2026-10-24T10:30:53.122974402Z","cvss":[{"version":"3.1","score":8.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","level":"high"}],"updated_at":"2026-11-02T15:45:07.060148Z"},{"id":"GHSA-mq58-m26g-46gp","title":"Jenkins Email Extension Plugin: Attackers able to control email content may specify `file:` URLs for images to read arbitrary files from Jenkins controller filesystem","description":"Jenkins Email Extension Plugin 1933.v45cec755423f and earlier includes a feature that allows inlining images as `base64` in email content by setting the `data-inline` attribute. No restrictions are placed on the image URLs that can be inlined.\n\nThis allows attackers able to control the email content to specify `file:` URLs for images to read arbitrary files from the Jenkins controller filesystem.\n\nThe feature allowing inlining images as `base64` in email content by setting the `data-inline` attribute is removed from Email Extension Plugin 1933.1935.v276319e3cc47.","status":"published","published":"2026-05-27T15:33:26Z","modified":"2026-07-01T19:56:31.477206Z","cvss":[{"version":"3.1","score":8.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","level":"high"}],"cwes":["CWE-73"],"updated_at":"2026-11-02T15:46:52.170928Z"}]}}