Bug 2455939 (CVE-2026-4277)

Summary:	CVE-2026-4277 Django: Django: Privilege Abuse via Forged POST Data in GenericInlineModelAdmin
Product:	[Other] Security Response	Reporter:	OSIDB Bzimport <bzimport>
Component:	vulnerability	Assignee:	Product Security DevOps Team <prodsec-dev>
Status:	NEW ---	QA Contact:
Severity:	medium	Docs Contact:
Priority:	medium
Version:	unspecified	CC:	anthomas, brasmith, caswilli, cmyers, cochase, dnakabaa, dranck, dschmidt, ehelms, erezende, ggainey, jlanda, jmitchel, juwatts, jwong, kaycoth, kshier, lcouzens, mhulan, nmoumoul, omaciel, osousa, pcreech, rchan, simaishi, smallamp, smcdonal, stcannon, teagle, tmalecek, ttakamiy, yguenane
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:		Doc Type:	---
Doc Text:	A flaw was found in Django. This vulnerability allows an attacker to bypass permission validation by submitting forged `POST` data to the `GenericInlineModelAdmin` component. As a result, unauthorized inline model instances could be added, potentially leading to privilege abuse or unauthorized data manipulation within the application.	Story Points:	---
Clone Of:		Environment:
Last Closed:		Type:	---
Regression:	---	Mount Type:	---
Documentation:	---	CRM:
Verified Versions:		Category:	---
oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:

Description OSIDB Bzimport 2026-04-07 15:03:44 UTC

An issue was discovered in 6.0 before 6.0.4, 5.2 before 5.2.13, and 4.2 before 4.2.30.
Add permissions on inline model instances were not validated on submission of
forged `POST` data in `GenericInlineModelAdmin`.
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 N05ec@LZU-DSLab for reporting this issue.