What is CVE-2026-5766?

CVE-2026-5766 is a medium-severity vulnerability in Djangoproject Django, classified under Improper Handling of Length Parameter Inconsistency. CVSS score: 5.3/10. Published 2026-05-05.

How severe is CVE-2026-5766?

Medium severity. CVSS v3 base score is 5.3 out of 10.

Vulnerability in Djangoproject Django

CVE-2026-5766

An issue was discovered in 6.0 before 6.0.5 and 5.2 before 5.2.14. ASGI requests with a missing or understated `Content-Length` header can bypass the `FILE_UPLOAD_MAX_MEMORY_SIZE` limit, potentially loading large files into memory and caus…

EPSS: 0.001 (16.3th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 5.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L.

Affected products

Djangoproject Django — versions 6.0, 6.0.5, 5.2

Weakness classification (CWE)

CWE-130 — Improper Handling of Length Parameter Inconsistency

References

Django security archive (vendor-advisory, Vendor Advisory)
Django releases announcements (mailing-list, Third Party Advisory)
Django security releases issued: 6.0.5 and 5.2.14 (vendor-advisory, Vendor Advisory)

Frequently asked questions

What is CVE-2026-5766?: CVE-2026-5766 is a medium-severity vulnerability in Djangoproject Django, classified under Improper Handling of Length Parameter Inconsistency. CVSS score: 5.3/10. Published 2026-05-05.
How severe is CVE-2026-5766?: Medium severity. CVSS v3 base score is 5.3 out of 10.