{"id":"CVE-2023-33185","aliases":["EUVD-2023-0063","GHSA-qg36-9jxh-fj25","PYSEC-2023-82"],"status":"published","title":"Incorrect signature verification in django-ses","description":"Django-SES is a drop-in mail backend for Django. The django_ses library implements a mail backend for Django using AWS Simple Email Service. The library exports the `SESEventWebhookView class` intended to receive signed requests from AWS to handle email bounces, subscriptions, etc. These requests are signed by AWS and are verified by django_ses, however the verification of this signature was found to be flawed as it allowed users to specify arbitrary public certificates. This issue was patched in version 3.5.0.","severity":{"version":"3.1","score":4.6,"vector":"CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:L/I:L/A:L","level":"medium","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-10","score":0.00233,"percentile":0.14346,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-347"],"published":"2023-05-22T19:41:56Z","modified":"2026-10-28T02:30:49Z","fixes":[{"ecosystem":"PyPI","package":"django-ses","fixed_in":["3.5.0"],"sources":["ghsa","osv"]}],"affected":[{"source":"ghsa","ecosystem":"PyPI","package":"django-ses","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"3.5.0"}]}]},{"source":"osv","ecosystem":"PyPI","package":"django-ses","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"3.5.0"}]}],"versions":["0.1","0.2","0.3.0","0.4.0","0.4.1","0.6.0","0.7.0","0.7.1","0.8.0","0.8.1","0.8.10","0.8.11","0.8.12","0.8.13","0.8.14","0.8.2","0.8.3","0.8.3.1","0.8.4","0.8.5","0.8.6","0.8.7","0.8.8","0.8.9","1.0.0","1.0.1","1.0.2","1.0.3","2.0.0","2.1.0","2.1.1","2.2.0","2.2.1","2.2.2","2.3.0","2.3.1","2.4.0","2.5.0","2.6.0","2.6.1","3.0.0","3.0.1","3.1.0","3.1.2","3.2.0","3.2.1","3.2.2","3.3.0","3.4.0","3.4.1"]},{"source":"osv","ecosystem":"PyPI","package":"django-ses","ranges":[{"type":"GIT","events":[{"introduced":"0"},{"fixed":"b71b5f413293a13997b6e6314086cb9c22629795"}]},{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"3.5.0"}]}],"versions":["0.1","0.2","0.3.0","0.4.0","0.4.1","0.6.0","0.7.0","0.7.1","0.8.0","0.8.1","0.8.10","0.8.11","0.8.12","0.8.13","0.8.14","0.8.2","0.8.3","0.8.3.1","0.8.4","0.8.5","0.8.6","0.8.7","0.8.8","0.8.9","1.0.0","1.0.1","1.0.2","1.0.3","2.0.0","2.1.0","2.1.1","2.2.0","2.2.1","2.2.2","2.3.0","2.3.1","2.4.0","2.5.0","2.6.0","2.6.1","3.0.0","3.0.1","3.1.0","3.1.2","3.2.0","3.2.1","3.2.2","3.3.0","3.4.0","3.4.1"]}],"products":[{"vendor":"django-ses","product":"django-ses"},{"vendor":"django-ses_project","product":"django-ses"}],"references":[{"url":"https://github.com/django-ses/django-ses/security/advisories/GHSA-qg36-9jxh-fj25","tags":["x_refsource_CONFIRM","x_transferred","Vendor Advisory","advisory","web"]},{"url":"https://github.com/django-ses/django-ses/commit/b71b5f413293a13997b6e6314086cb9c22629795","tags":["x_refsource_MISC","x_transferred","Patch","fix","web"]},{"url":"https://github.com/django-ses/django-ses/blob/3d627067935876487f9938310d5e1fbb249a7778/CVE/001-cert-url-signature-verification.md","tags":["x_refsource_MISC","x_transferred","Exploit","Third Party Advisory","web"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2023-33185","tags":["advisory"]},{"url":"https://github.com/pypa/advisory-database/tree/main/vulns/django-ses/PYSEC-2023-82.yaml","tags":["web"]},{"url":"https://github.com/advisories/GHSA-qg36-9jxh-fj25"},{"url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/33xxx/CVE-2023-33185.json","tags":["advisory"]},{"url":"https://github.com/django-ses/django-ses","tags":["package"]}],"sources":{"cve":[{"id":"CVE-2023-33185","title":"Incorrect signature verification in django-ses","description":"Django-SES is a drop-in mail backend for Django. The django_ses library implements a mail backend for Django using AWS Simple Email Service. The library exports the `SESEventWebhookView class` intended to receive signed requests from AWS to handle email bounces, subscriptions, etc. These requests are signed by AWS and are verified by django_ses, however the verification of this signature was found to be flawed as it allowed users to specify arbitrary public certificates. This issue was patched in version 3.5.0.","status":"published","published":"2023-05-26T20:03:33.725Z","modified":"2025-01-14T19:31:45.155Z","cvss":[{"version":"3.1","score":4.6,"vector":"CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:L/I:L/A:L","level":"medium","assessor":"cna"}],"cwes":["CWE-347"],"updated_at":"2026-11-02T14:35:34.170609Z"}],"euvd":[{"id":"EUVD-2023-0063","description":"Django-SES is a drop-in mail backend for Django. The django_ses library implements a mail backend for Django using AWS Simple Email Service. The library exports the `SESEventWebhookView class` intended to receive signed requests from AWS to handle email bounces, subscriptions, etc. These requests are signed by AWS and are verified by django_ses, however the verification of this signature was found to be flawed as it allowed users to specify arbitrary public certificates. This issue was patched in version 3.5.0.","status":"published","published":"2023-05-26T20:03:33Z","modified":"2025-01-14T19:31:45Z","cvss":[{"version":"3.1","score":4.6,"vector":"CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:L/I:L/A:L","level":"medium"}],"updated_at":"2026-11-03T00:04:19.424496Z"}],"ghsa":[{"id":"GHSA-qg36-9jxh-fj25","title":"Incorrect signature verification in django-ses","description":"The django_ses library implements a mail backend for Django using AWS Simple Email Service. The library exports the `SESEventWebhookView class` intended to receive signed requests from AWS to handle email bounces, subscriptions, etc. These requests are signed by AWS and are verified by django_ses, however the verification of this signature was found to be flawed as it allowed users to specify arbitrary public certificates.","status":"published","published":"2023-05-22T19:41:56Z","modified":"2024-11-18T16:26:29Z","cvss":[{"version":"3.1","score":4.6,"vector":"CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:L/I:L/A:L","level":"medium"},{"version":"4.0","score":2.1,"vector":"CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:P/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N","level":"low"}],"cwes":["CWE-347"],"updated_at":"2026-11-02T14:38:19.029049Z"}],"nvd":[{"id":"CVE-2023-33185","description":"Django-SES is a drop-in mail backend for Django. The django_ses library implements a mail backend for Django using AWS Simple Email Service. The library exports the `SESEventWebhookView class` intended to receive signed requests from AWS to handle email bounces, subscriptions, etc. These requests are signed by AWS and are verified by django_ses, however the verification of this signature was found to be flawed as it allowed users to specify arbitrary public certificates. This issue was patched in version 3.5.0.","status":"published","published":"2023-05-26T21:15:20.527Z","modified":"2026-06-17T06:01:15.613Z","cvss":[{"version":"3.1","score":4.6,"vector":"CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:L/I:L/A:L","level":"medium","assessor":"secondary"},{"version":"3.1","score":5.4,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N","level":"medium","assessor":"primary"}],"cwes":["CWE-347"],"updated_at":"2026-11-02T14:08:03.200773Z"}],"osv":[{"id":"CVE-2023-33185","title":"Incorrect signature verification in django-ses","description":"Django-SES is a drop-in mail backend for Django. The django_ses library implements a mail backend for Django using AWS Simple Email Service. The library exports the `SESEventWebhookView class` intended to receive signed requests from AWS to handle email bounces, subscriptions, etc. These requests are signed by AWS and are verified by django_ses, however the verification of this signature was found to be flawed as it allowed users to specify arbitrary public certificates. This issue was patched in version 3.5.0.","status":"published","published":"2023-05-26T20:03:33.725Z","modified":"2026-10-28T02:30:49.060555468Z","cvss":[{"version":"3.1","score":4.6,"vector":"CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:L/I:L/A:L","level":"medium"}],"cwes":["CWE-347"],"updated_at":"2026-11-02T15:44:32.116263Z"},{"id":"GHSA-qg36-9jxh-fj25","title":"Incorrect signature verification in django-ses","description":"The django_ses library implements a mail backend for Django using AWS Simple Email Service. The library exports the `SESEventWebhookView class` intended to receive signed requests from AWS to handle email bounces, subscriptions, etc. These requests are signed by AWS and are verified by django_ses, however the verification of this signature was found to be flawed as it allowed users to specify arbitrary public certificates.","status":"published","published":"2023-05-22T19:41:56Z","modified":"2026-09-10T03:50:08.393095928Z","cvss":[{"version":"3.1","score":4.6,"vector":"CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:L/I:L/A:L","level":"medium"},{"version":"4.0","score":2.1,"vector":"CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:P/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N","level":"low"}],"cwes":["CWE-347"],"updated_at":"2026-11-02T15:46:54.40888Z"},{"id":"PYSEC-2023-82","description":"Django-SES is a drop-in mail backend for Django. The django_ses library implements a mail backend for Django using AWS Simple Email Service. The library exports the `SESEventWebhookView class` intended to receive signed requests from AWS to handle email bounces, subscriptions, etc. These requests are signed by AWS and are verified by django_ses, however the verification of this signature was found to be flawed as it allowed users to specify arbitrary public certificates. This issue was patched in version 3.5.0.","status":"published","published":"2023-05-26T21:15:00Z","modified":"2023-11-08T04:12:39.443618Z","updated_at":"2026-11-02T15:52:53.837392Z"}]}}