Bug 2546811 (CVE-2026-104073)

Summary:	CVE-2026-104073 netbox: NetBox: Account takeover via custom link template injection
Product:	[Other] Security Response	Reporter:	OSIDB Bzimport <bzimport>
Component:	vulnerability	Assignee:	Product Security DevOps Team <prodsec-dev>
Status:	NEW ---	QA Contact:
Severity:	high	Docs Contact:
Priority:	high
Version:	unspecified	Keywords:	Security
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Hardware:	All
OS:	Linux
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Doc Text:	A flaw was found in NetBox. An authenticated user with permission to create custom links can exploit a template injection vulnerability to access sensitive session information and Application Programming Interface (API) tokens. When a victim views an object containing the malicious link, their credentials can be automatically exfiltrated to an attacker-controlled server, resulting in account takeover.	Story Points:	---
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oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
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Bug Depends On:	2547395
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Description OSIDB Bzimport 2026-10-06 19:04:43 UTC

NetBox versions 2.9.5 before 4.7.0 contain a server-side template injection vulnerability that allows a low-privileged user with the "Can add custom links" permission to steal session cookies and API tokens of other users by exposing the raw Django HttpRequest object to the Jinja2 template context. Attackers can craft a custom link template embedding request.COOKIES['sessionid'] or a user's API token into an img src URL, which bypasses the clean_html sanitizer and auto-exfiltrates the victim's credentials to an attacker-controlled host when a privileged user views the object, enabling full account takeover.