CVE-2026-104073

HIGH 7.6

NetBox 2.9.5 < 4.7.0 Session Hijacking via Custom Links

CVSS Score

7.6

EPSS Score

0.0%

EPSS Percentile

0th

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.

CWE	CWE-668 CWE-79
Vendor	netbox-community
Product	netbox
Published	Oct 6, 2026

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CVSS v3 Breakdown

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

Attack Vector

Network

Attack Complexity

Low

Privileges Required

Low

User Interaction

Required

Scope

Changed

Confidentiality

High

Integrity

Low

Availability

None

Affected Versions

netbox-community / netbox

2.9.5 < 4.7.0

References

NVD ↗ CVE.org ↗ EPSS Data ↗

github.com: https://github.com/netbox-community/netbox/releases#release-v4.7.0 github.com: https://github.com/netbox-community/netbox/issues/22607 github.com: https://github.com/netbox-community/netbox/pull/22616 vulncheck.com: https://www.vulncheck.com/advisories/netbox-session-hijacking-via-custom-links

Credits

Nguyen Hoang VulnCheck