{"id":"CVE-2023-33185","aliases":["GHSA-qg36-9jxh-fj25","PYSEC-2023-82"],"title":"Incorrect signature verification in django-ses","summary":"Incorrect signature verification in django-ses","severity":"medium","cvss":4.6,"cvssVector":"CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:L/I:L/A:L","vendor":"django-ses","product":"django-ses","ecosystem":"pip","affected":["django-ses < 3.5.0"],"patched":["django-ses 3.5.0"],"published":"2023-05-22","updated":"2026-09-10","sourceUpdated":"2026-09-10T03:50:08.393095928Z","source":"OSV","sourceUrl":"https://osv.dev/vulnerability/GHSA-qg36-9jxh-fj25","references":[{"url":"https://github.com/django-ses/django-ses/security/advisories/GHSA-qg36-9jxh-fj25"},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2023-33185"},{"url":"https://github.com/django-ses/django-ses/commit/b71b5f413293a13997b6e6314086cb9c22629795"},{"url":"https://github.com/django-ses/django-ses"},{"url":"https://github.com/django-ses/django-ses/blob/3d627067935876487f9938310d5e1fbb249a7778/CVE/001-cert-url-signature-verification.md"},{"url":"https://github.com/pypa/advisory-database/tree/main/vulns/django-ses/PYSEC-2023-82.yaml"}],"tags":["osv","pip"],"epss":0.00233,"epssPercentile":0.14519,"ingestedAt":"2026-09-12T03:13:01.721Z","slug":"CVE-2023-33185","body":"## Overview\n\nThe 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.\n\n## Affected packages\n\n- `django-ses < 3.5.0`\n\n## Remediation\n\nUpgrade to a patched release:\n\n- `django-ses 3.5.0`","depth":"sunlit","depthScore":25,"depthScoreParts":{"impact":25.3,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}