CVE & CISA-KEV Catalog

CVE-2026-5766

MEDIUM
5.3
CVSS v3
NVD

Description

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.

CWE-130

How to fix

Remediation Available
python-djangoDebian
Fixed in:3:5.2.14-1CVE-2026-5766
python-djangoUbuntu
Fixed in:2:3.2.12-2ubuntu1.27USN-8232-1
Fixed in:3:4.2.11-1ubuntu1.16USN-8232-1
Fixed in:3:5.2.4-1ubuntu2.5USN-8232-1
python3-djangoUbuntu
Fixed in:2:3.2.12-2ubuntu1.27USN-8232-1
Fixed in:3:4.2.11-1ubuntu1.16USN-8232-1
Fixed in:3:5.2.4-1ubuntu2.5USN-8232-1

TridentStack Control can deploy fixes like this automatically across your Windows, macOS, and Linux fleet. See how it works

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorNetwork
Attack ComplexityLow
Privileges RequiredNone
User InteractionNone
ScopeUnchanged

Impact

ConfidentialityNone
IntegrityNone
AvailabilityLow

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

Exploit Intelligence

0.42%probability of exploitation in 30 days
35thpercentile

Low risk: more likely to be exploited than 35% of all known CVEs.

References

Third-Party Advisory1

Related Vulnerabilities

Other CWE-130 vulnerabilities, ordered by exploit likelihood. View all

CVESeverityCVSSEPSSExploitedFix
CVE-2025-14847High7.583%KEVFix
CVE-2024-39614High7.529%-Fix
CVE-2021-36090High7.513%-Fix
CVE-2021-35516High7.512%-Fix
CVE-2021-35517High7.511%-Fix
CVE-2019-3862High7.37.7%-Fix

Common questions

How do I fix CVE-2026-5766?

Published advisories record a fix for 3 affected products. The "How to fix" section on this page lists the fixed version and source advisory for each one, so apply the entry matching what you actually run.

Is CVE-2026-5766 being actively exploited?

Not that we know of. CVE-2026-5766 is not in the CISA Known Exploited Vulnerabilities catalog. Its EPSS score of 0.42% is the estimated probability that it will be exploited in the next 30 days. That is higher than 35% of all scored CVEs.

How severe is CVE-2026-5766?

CVE-2026-5766 has a CVSS v3 base score of 5.3, rated medium. CVSS rates the technical impact if the vulnerability is exploited, not how likely that is, so weigh it alongside the exploit-prediction score when you decide what to patch first.

What does CVE-2026-5766 affect?

Published advisories record a fix for python-django (Debian), python-django (Ubuntu), python3-django (Ubuntu). Only products with a sourced advisory are listed, so treat this as what we can cite rather than a complete inventory.

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2026-05-07.