{"id":"CVE-2023-33185","aliases":["GHSA-qg36-9jxh-fj25","PYSEC-2023-82"],"url":"https://o3.security/vulnerability/CVE-2023-33185","summary":"Incorrect signature verification in django-ses","details":"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.","published":"2023-05-26T20:03:33.725Z","modified":"2026-07-15T01:48:49.914836329Z","cvss":{"score":4.6,"severity":"MEDIUM","vector":"CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:L/I:L/A:L"},"epss":null,"cisaKev":null,"exploitsKnown":1,"affectedPackages":[{"ecosystem":"PyPI","name":"django-ses","fixedVersion":"3.5.0"}],"fix":{"url":"https://github.com/django-ses/django-ses/commit/b71b5f413293a13997b6e6314086cb9c22629795","label":"django-ses/django-ses@b71b5f4"},"references":[{"type":"WEB","url":"https://github.com/django-ses/django-ses/blob/3d627067935876487f9938310d5e1fbb249a7778/CVE/001-cert-url-signature-verification.md"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/33xxx/CVE-2023-33185.json"},{"type":"ADVISORY","url":"https://github.com/django-ses/django-ses/security/advisories/GHSA-qg36-9jxh-fj25"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2023-33185"},{"type":"FIX","url":"https://github.com/django-ses/django-ses/commit/b71b5f413293a13997b6e6314086cb9c22629795"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-07-15T01:48:49.914836329Z"}}