{"id":"CVE-2026-33033","aliases":["GHSA-5mf9-h53q-7mhq","BIT-django-2026-33033","PYSEC-2026-48"],"title":"Django has potential DoS via MultiPartParser through crafted multipart uploads","summary":"Django has potential DoS via MultiPartParser through crafted multipart uploads","severity":"medium","cvss":6.5,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","vendor":"django","product":"django","ecosystem":"pip","affected":["django >= 6.0, < 6.0.4","django >= 5.2, < 5.2.13","django >= 4.2, < 4.2.30"],"patched":["django 6.0.4","django 5.2.13","django 4.2.30"],"published":"2026-04-07","updated":"2026-09-10","sourceUpdated":"2026-09-10T03:50:43.008740278Z","source":"OSV","sourceUrl":"https://osv.dev/vulnerability/GHSA-5mf9-h53q-7mhq","references":[{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-33033"},{"url":"https://docs.djangoproject.com/en/dev/releases/security"},{"url":"https://github.com/django/django"},{"url":"https://github.com/pypa/advisory-database/tree/main/vulns/django/PYSEC-2026-48.yaml"},{"url":"https://groups.google.com/g/django-announce"},{"url":"https://www.djangoproject.com/weblog/2026/apr/07/security-releases"}],"tags":["osv","pip","exploit-available"],"epss":0.00879,"epssPercentile":0.57044,"exploits":{"github":1,"githubRepos":["https://github.com/ch4n3-yoon/CVE-2026-33033-PoC"],"checkedAt":"2026-09-21T15:28:41.627Z"},"exploitAvailable":true,"ingestedAt":"2026-09-12T03:13:01.660Z","slug":"CVE-2026-33033","body":"## Overview\n\nAn issue was discovered in 6.0 before 6.0.4, 5.2 before 5.2.13, and 4.2 before 4.2.30. `MultiPartParser` allows remote attackers to degrade performance by submitting multipart uploads with `Content-Transfer-Encoding: base64` including excessive whitespace.\n\nEarlier, unsupported Django series (such as 5.0.x, 4.1.x, and 3.2.x) were not evaluated and may also be affected.\nDjango would like to thank Seokchan Yoon for reporting this issue.\n\n## Affected packages\n\n- `django >= 6.0, < 6.0.4`\n- `django >= 5.2, < 5.2.13`\n- `django >= 4.2, < 4.2.30`\n\n## Remediation\n\nUpgrade to a patched release:\n\n- `django 6.0.4`\n- `django 5.2.13`\n- `django 4.2.30`","depth":"twilight","depthScore":48,"depthScoreParts":{"impact":35.8,"likelihood":0.2,"exploitation":12,"ransomware":0},"changes":[]}