CVE catalog
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 l
- Severity
- Medium · CVSS 6.3
CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X - Published
- Source
- [NVD] · [CVE record]
- EPSS
- 0.42% · Oct 25, 2026
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 causing service degradation. As a reminder, Django expects a limit to be configured at the web server level rather than solely relying on `FILE_UPLOAD_MAX_MEMORY_SIZE`. Earlier, unsupported Django series (such as 5.0.x, 4.1.x, and 3.2.x) were not evaluated and may also be affected. Django would like to thank Kyle Agronick for reporting this issue.
Vulnerable and fixed packages
Distribution-reported package versions and fixes. These do not depend on matching against the OpenFactory package catalog.
| Distribution | Package | Release | Version | Status |
|---|---|---|---|---|
| Debian | python-django | sid | 3:5.2.18-1 | fixed |
| Debian | python-django | forky | 3:5.2.17-2 | fixed |
| Debian | python-django | trixie | 3:4.2.28-0+deb13u2 | vulnerable |
| Debian | python-django | trixie-security | 3:4.2.28-0+deb13u1 | vulnerable |
| Debian | python-django | bookworm | 3:3.2.25-0+deb12u3 | vulnerable |
| Debian | python-django | bookworm-security | 3:3.2.25-0+deb12u6 | vulnerable |
| Cpe | python-django | Not reported | 3:4.2.11-1ubuntu1.16 | fixed |
| Cpe | python-django-doc | Not reported | 3:4.2.11-1ubuntu1.16 | fixed |
| Cpe | python3-django | Not reported | 3:4.2.11-1ubuntu1.16 | fixed |
| Cpe | python-django | Not reported | Not reported | vulnerable |
| Cpe | django | Not reported | 5.2.14 | fixed |
| Cpe | django | Not reported | 6.0.5 | fixed |
| Ubuntu | python-django | pro | 1:1.11.22-1ubuntu1 | vulnerable |
| Ubuntu | python-django | pro | 2:2.2.6-1ubuntu1 | vulnerable |
| Ubuntu | python-django | pro | 2:2.2.9-2ubuntu1 | vulnerable |
| Ubuntu | python-django | pro | 2:2.2.10-1 | vulnerable |
| Ubuntu | python-django | pro | 2:2.2.10-1ubuntu1 | vulnerable |
| Ubuntu | python-django | pro | 2:2.2.11-1 | vulnerable |
| Ubuntu | python-django | pro | 2:2.2.12-1 | vulnerable |
| Ubuntu | python-django | pro | 2:2.2.12-1ubuntu0.1 | vulnerable |
| Ubuntu | python-django | pro | 2:2.2.12-1ubuntu0.2 | vulnerable |
| Ubuntu | python-django | pro | 2:2.2.12-1ubuntu0.3 | vulnerable |
| Ubuntu | python-django | pro | 2:2.2.12-1ubuntu0.4 | vulnerable |
| Ubuntu | python-django | pro | 2:2.2.12-1ubuntu0.5 | vulnerable |
| Ubuntu | python-django | pro | 2:2.2.12-1ubuntu0.6 | vulnerable |
| Ubuntu | python-django | pro | 2:2.2.12-1ubuntu0.7 | vulnerable |
| Ubuntu | python-django | pro | 2:2.2.12-1ubuntu0.8 | vulnerable |
| Ubuntu | python-django | pro | 2:2.2.12-1ubuntu0.9 | vulnerable |
| Ubuntu | python-django | pro | 2:2.2.12-1ubuntu0.10 | vulnerable |
| Ubuntu | python-django | pro | 2:2.2.12-1ubuntu0.11 | vulnerable |
| Ubuntu | python-django | pro | 2:2.2.12-1ubuntu0.12 | vulnerable |
| Ubuntu | python-django | pro | 2:2.2.12-1ubuntu0.13 | vulnerable |
| Ubuntu | python-django | pro | 2:2.2.12-1ubuntu0.14 | vulnerable |
| Ubuntu | python-django | pro | 2:2.2.12-1ubuntu0.15 | vulnerable |
| Ubuntu | python-django | pro | 2:2.2.12-1ubuntu0.16 | vulnerable |
| Ubuntu | python-django | pro | 2:2.2.12-1ubuntu0.17 | vulnerable |
| Ubuntu | python-django | pro | 2:2.2.12-1ubuntu0.18 | vulnerable |
| Ubuntu | python-django | pro | 2:2.2.12-1ubuntu0.19 | vulnerable |
| Ubuntu | python-django | pro | 2:2.2.12-1ubuntu0.20 | vulnerable |
| Ubuntu | python-django | pro | 2:2.2.12-1ubuntu0.21 | vulnerable |
| Ubuntu | python-django | pro | 2:2.2.12-1ubuntu0.22 | vulnerable |
| Ubuntu | python-django | pro | 2:2.2.12-1ubuntu0.23 | vulnerable |
| Ubuntu | python-django | pro | 2:2.2.12-1ubuntu0.24 | vulnerable |
| Ubuntu | python-django | pro | 2:2.2.12-1ubuntu0.25 | vulnerable |
| Ubuntu | python-django | pro | 2:2.2.12-1ubuntu0.26 | vulnerable |
| Ubuntu | python-django | pro | 2:2.2.12-1ubuntu0.27 | vulnerable |
| Ubuntu | python-django | pro | 2:2.2.12-1ubuntu0.28 | vulnerable |
| Ubuntu | python-django | pro | 2:2.2.12-1ubuntu0.29 | vulnerable |
| Ubuntu | python-django | pro | 2:2.2.12-1ubuntu0.29+esm1 | vulnerable |
| Ubuntu | python-django | pro | 2:2.2.12-1ubuntu0.29+esm2 | vulnerable |
| Ubuntu | python-django | pro | 2:2.2.12-1ubuntu0.29+esm3 | vulnerable |
| Ubuntu | python-django | pro | 2:2.2.12-1ubuntu0.29+esm4 | vulnerable |
| Ubuntu | python-django | pro | 2:2.2.12-1ubuntu0.29+esm5 | vulnerable |
| Ubuntu | python-django | pro | 2:2.2.12-1ubuntu0.29+esm6 | vulnerable |
| Ubuntu | python-django | pro | 2:2.2.12-1ubuntu0.29+esm7 | vulnerable |
| Ubuntu | python-django | pro | 2:2.2.12-1ubuntu0.29+esm8 | vulnerable |
| Ubuntu | python-django | pro | 2:2.2.12-1ubuntu0.29+esm10 | vulnerable |
| Ubuntu | python-django | 22.04 | 2:2.2.24-1ubuntu1 | vulnerable |
| Ubuntu | python-django | 22.04 | 2:3.2.12-2 | vulnerable |
| Ubuntu | python-django | 22.04 | 2:3.2.12-2ubuntu1 | vulnerable |
| Ubuntu | python-django | 22.04 | 2:3.2.12-2ubuntu1.1 | vulnerable |
| Ubuntu | python-django | 22.04 | 2:3.2.12-2ubuntu1.2 | vulnerable |
| Ubuntu | python-django | 22.04 | 2:3.2.12-2ubuntu1.3 | vulnerable |
| Ubuntu | python-django | 22.04 | 2:3.2.12-2ubuntu1.4 | vulnerable |
| Ubuntu | python-django | 22.04 | 2:3.2.12-2ubuntu1.5 | vulnerable |
| Ubuntu | python-django | 22.04 | 2:3.2.12-2ubuntu1.6 | vulnerable |
| Ubuntu | python-django | 22.04 | 2:3.2.12-2ubuntu1.7 | vulnerable |
| Ubuntu | python-django | 22.04 | 2:3.2.12-2ubuntu1.8 | vulnerable |
| Ubuntu | python-django | 22.04 | 2:3.2.12-2ubuntu1.9 | vulnerable |
| Ubuntu | python-django | 22.04 | 2:3.2.12-2ubuntu1.10 | vulnerable |
| Ubuntu | python-django | 22.04 | 2:3.2.12-2ubuntu1.11 | vulnerable |
| Ubuntu | python-django | 22.04 | 2:3.2.12-2ubuntu1.12 | vulnerable |
| Ubuntu | python-django | 22.04 | 2:3.2.12-2ubuntu1.13 | vulnerable |
| Ubuntu | python-django | 22.04 | 2:3.2.12-2ubuntu1.14 | vulnerable |
| Ubuntu | python-django | 22.04 | 2:3.2.12-2ubuntu1.15 | vulnerable |
| Ubuntu | python-django | 22.04 | 2:3.2.12-2ubuntu1.16 | vulnerable |
| Ubuntu | python-django | 22.04 | 2:3.2.12-2ubuntu1.17 | vulnerable |
| Ubuntu | python-django | 22.04 | 2:3.2.12-2ubuntu1.18 | vulnerable |
| Ubuntu | python-django | 22.04 | 2:3.2.12-2ubuntu1.19 | vulnerable |
| Ubuntu | python-django | 22.04 | 2:3.2.12-2ubuntu1.20 | vulnerable |
| Ubuntu | python-django | 22.04 | 2:3.2.12-2ubuntu1.21 | vulnerable |
| Ubuntu | python-django | 22.04 | 2:3.2.12-2ubuntu1.22 | vulnerable |
| Ubuntu | python-django | 22.04 | 2:3.2.12-2ubuntu1.23 | vulnerable |
| Ubuntu | python-django | 22.04 | 2:3.2.12-2ubuntu1.24 | vulnerable |
| Ubuntu | python-django | 22.04 | 2:3.2.12-2ubuntu1.25 | vulnerable |
| Ubuntu | python-django | 22.04 | 2:3.2.12-2ubuntu1.26 | vulnerable |
| Ubuntu | python-django | 22.04 | 2:3.2.12-2ubuntu1.27 | fixed |
| Ubuntu | python-django | 24.04 | 3:4.2.4-1ubuntu2 | vulnerable |
| Ubuntu | python-django | 24.04 | 3:4.2.8-1 | vulnerable |
| Ubuntu | python-django | 24.04 | 3:4.2.9-1 | vulnerable |
| Ubuntu | python-django | 24.04 | 3:4.2.11-1 | vulnerable |
| Ubuntu | python-django | 24.04 | 3:4.2.11-1ubuntu1 | vulnerable |
| Ubuntu | python-django | 24.04 | 3:4.2.11-1ubuntu1.1 | vulnerable |
| Ubuntu | python-django | 24.04 | 3:4.2.11-1ubuntu1.2 | vulnerable |
| Ubuntu | python-django | 24.04 | 3:4.2.11-1ubuntu1.3 | vulnerable |
| Ubuntu | python-django | 24.04 | 3:4.2.11-1ubuntu1.4 | vulnerable |
| Ubuntu | python-django | 24.04 | 3:4.2.11-1ubuntu1.5 | vulnerable |
| Ubuntu | python-django | 24.04 | 3:4.2.11-1ubuntu1.6 | vulnerable |
| Ubuntu | python-django | 24.04 | 3:4.2.11-1ubuntu1.7 | vulnerable |
| Ubuntu | python-django | 24.04 | 3:4.2.11-1ubuntu1.8 | vulnerable |
| Ubuntu | python-django | 24.04 | 3:4.2.11-1ubuntu1.9 | vulnerable |
| Ubuntu | python-django | 24.04 | 3:4.2.11-1ubuntu1.10 | vulnerable |
| Ubuntu | python-django | 24.04 | 3:4.2.11-1ubuntu1.11 | vulnerable |
| Ubuntu | python-django | 24.04 | 3:4.2.11-1ubuntu1.12 | vulnerable |
| Ubuntu | python-django | 24.04 | 3:4.2.11-1ubuntu1.13 | vulnerable |
| Ubuntu | python-django | 24.04 | 3:4.2.11-1ubuntu1.14 | vulnerable |
| Ubuntu | python-django | 24.04 | 3:4.2.11-1ubuntu1.15 | vulnerable |
| Ubuntu | python-django | 24.04 | 3:4.2.11-1ubuntu1.16 | fixed |
| Ubuntu | python-django | 25.10 | 3:4.2.18-1ubuntu1 | vulnerable |
| Ubuntu | python-django | 25.10 | 3:4.2.18-1ubuntu1.1 | vulnerable |
| Ubuntu | python-django | 25.10 | 3:5.2.4-1 | vulnerable |
| Ubuntu | python-django | 25.10 | 3:5.2.4-1ubuntu1 | vulnerable |
| Ubuntu | python-django | 25.10 | 3:5.2.4-1ubuntu2 | vulnerable |
| Ubuntu | python-django | 25.10 | 3:5.2.4-1ubuntu2.1 | vulnerable |
| Ubuntu | python-django | 25.10 | 3:5.2.4-1ubuntu2.2 | vulnerable |
| Ubuntu | python-django | 25.10 | 3:5.2.4-1ubuntu2.3 | vulnerable |
| Ubuntu | python-django | 25.10 | 3:5.2.4-1ubuntu2.4 | vulnerable |
| Ubuntu | python-django | 25.10 | 3:5.2.4-1ubuntu2.5 | fixed |
| Ubuntu | python-django | 26.04 | 3:5.2.4-1ubuntu2 | vulnerable |
| Ubuntu | python-django | 26.04 | 3:5.2.4-1ubuntu3 | vulnerable |
| Ubuntu | python-django | 26.04 | 3:5.2.9-0ubuntu1 | vulnerable |
| Ubuntu | python-django | 26.04 | 3:5.2.9-0ubuntu2 | vulnerable |
| Ubuntu | python-django | 26.04 | 3:5.2.9-0ubuntu3 | vulnerable |
| Ubuntu | python-django | 26.04 | 3:5.2.9-0ubuntu4 | vulnerable |
| Ubuntu | python-django | 26.04 | 3:5.2.9-0ubuntu4.1 | fixed |
| Cpe | django | Not reported | 6.0.5 | fixed |
Fixed-version evidence
| Distribution | Package | Type | Release | Fixed version | Urgency | Origin | Bugs |
|---|---|---|---|---|---|---|---|
| Debian | python-django | source | sid | 3:5.2.14-1 | not yet assigned | Not reported | [1135755] |
| Debian | python-django | source | forky | 3:5.2.14-1 | not yet assigned | Not reported | [1135755] |
| Debian | python-django | source | trixie | (unfixed) | not yet assigned | Not reported | [1135755] |
| Debian | python-django | source | bookworm | (unfixed) | not yet assigned | Not reported | [1135755] |
| Cpe | python-django | cpe | Not reported | 3:4.2.11-1ubuntu1.16 | Not reported | Not reported | Not reported |
| Cpe | python-django-doc | cpe | Not reported | 3:4.2.11-1ubuntu1.16 | Not reported | Not reported | Not reported |
| Cpe | python3-django | cpe | Not reported | 3:4.2.11-1ubuntu1.16 | Not reported | Not reported | Not reported |
| Cpe | django | cpe | Not reported | 5.2.14 | Not reported | Not reported | Not reported |
| Cpe | django | cpe | Not reported | 6.0.5 | Not reported | Not reported | Not reported |
| Ubuntu | python-django | deb | 22.04 | 2:3.2.12-2ubuntu1.27 | Not reported | UBUNTU-CVE-2026-5766 | Not reported |
| Ubuntu | python-django | deb | 24.04 | 3:4.2.11-1ubuntu1.16 | Not reported | UBUNTU-CVE-2026-5766 | Not reported |
| Ubuntu | python-django | deb | 25.10 | 3:5.2.4-1ubuntu2.5 | Not reported | UBUNTU-CVE-2026-5766 | Not reported |
| Ubuntu | python-django | deb | 26.04 | 3:5.2.9-0ubuntu4.1 | Not reported | UBUNTU-CVE-2026-5766 | Not reported |
| Cpe | django | cpe | Not reported | 6.0.5 | Not reported | NVD-CVE-2026-5766 | Not reported |
Notes
[trixie] python-django: Minor issue [bookworm] python-django: Minor issue
OpenFactory catalog packages
[Debian 12 (Bookworm)]
- [python3-django]Affected
Source package: [python-django]
Details (6)
3:3.2.25-0+deb12u3· all · bookwormAffected
nvd · python-django · debian · bookworm; nvd · python-django · debian · 12
3:3.2.25-0+deb12u3· all · bookwormAffected
nvd · python-django · debian · bookworm; nvd · python-django · debian · 12
3:4.2.21-1~bpo12+1· all · bookworm-backportsAffected
nvd · python-django · debian · bookworm; nvd · python-django · debian · 12
3:4.2.21-1~bpo12+1· all · bookworm-backportsAffected
nvd · python-django · debian · bookworm; nvd · python-django · debian · 12
3:3.2.25-0+deb12u4· all · bookworm-securityAffected
nvd · python-django · debian · bookworm; nvd · python-django · debian · 12
3:3.2.25-0+deb12u4· all · bookworm-securityAffected
nvd · python-django · debian · bookworm; nvd · python-django · debian · 12
- [python-django-doc]Affected
Source package: [python-django]
Details (6)
3:3.2.25-0+deb12u3· all · bookwormAffected
nvd · python-django · debian · bookworm; nvd · python-django · debian · 12
3:3.2.25-0+deb12u3· all · bookwormAffected
nvd · python-django · debian · bookworm; nvd · python-django · debian · 12
3:4.2.21-1~bpo12+1· all · bookworm-backportsAffected
nvd · python-django · debian · bookworm; nvd · python-django · debian · 12
3:4.2.21-1~bpo12+1· all · bookworm-backportsAffected
nvd · python-django · debian · bookworm; nvd · python-django · debian · 12
3:3.2.25-0+deb12u4· all · bookworm-securityAffected
nvd · python-django · debian · bookworm; nvd · python-django · debian · 12
3:3.2.25-0+deb12u4· all · bookworm-securityAffected
nvd · python-django · debian · bookworm; nvd · python-django · debian · 12
[Debian 13 (Trixie)]
- [python3-django]Affected
Source package: [python-django]
Details (6)
3:4.2.28-0+deb13u2· all · trixieAffected
nvd · python-django · debian · 13
3:4.2.28-0+deb13u2· all · trixieAffected
nvd · python-django · debian · 13
3:5.2.16-1~bpo13+1· all · trixie-backportsAffected
nvd · python-django · debian · 13
3:5.2.16-1~bpo13+1· all · trixie-backportsAffected
nvd · python-django · debian · 13
3:4.2.28-0+deb13u1· all · trixie-securityAffected
nvd · python-django · debian · 13
3:4.2.28-0+deb13u1· all · trixie-securityAffected
nvd · python-django · debian · 13
- [python-django-doc]Affected
Source package: [python-django]
Details (6)
3:4.2.28-0+deb13u2· all · trixieAffected
nvd · python-django · debian · 13
3:4.2.28-0+deb13u2· all · trixieAffected
nvd · python-django · debian · 13
3:5.2.16-1~bpo13+1· all · trixie-backportsAffected
nvd · python-django · debian · 13
3:5.2.16-1~bpo13+1· all · trixie-backportsAffected
nvd · python-django · debian · 13
3:4.2.28-0+deb13u1· all · trixie-securityAffected
nvd · python-django · debian · 13
3:4.2.28-0+deb13u1· all · trixie-securityAffected
nvd · python-django · debian · 13
Observed:
References
- [https://docs.djangoproject.com/en/dev/releases/security/]
- [https://ftp.suse.com/pub/projects/security/csaf/opensuse-su-2026_10708-1.json]
- [https://groups.google.com/g/django-announce]
- [https://nvd.nist.gov/vuln/detail/CVE-2026-5766]
- [https://osv.dev/vulnerability/DEBIAN-CVE-2026-5766]
- [https://osv.dev/vulnerability/UBUNTU-CVE-2026-5766]
- [https://security-tracker.debian.org/tracker/CVE-2026-5766]
- [https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-5766.json]
- [https://ubuntu.com/security/notices/USN-8232-1]
- [https://wid.cert-bund.de/.well-known/csaf/white/2026/wid-sec-w-2026-1373.json]
- [https://www.djangoproject.com/weblog/2026/may/05/security-releases/]
[CERT-Bund public advisories] · [Debian Security Tracker] · [FIRST EPSS] · [National Vulnerability Database (NVD)] · [OSV Package Vulnerability Database] · [Red Hat security advisories and VEX] · [SUSE security advisories and VEX] · [Ubuntu Security Notices (USN)]