Vulnerability · Published Oct 6, 2026 · Assigned by VulnCheck

CVE-2026-104073NetBox 2.9.5 < 4.7.0 Session Hijacking via Custom Links

High 7.6

In plain English

A high-severity cross-site scripting in netbox from netbox-community. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.4% (higher than 31% of all known vulnerabilities).

Severity (CVSS 3.1)7.6High

Exploit odds (30 days)0.4%top 69.5% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

Official description

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.

Affected products (as reported)

Vendor	Product	Versions
netbox-community	netbox	2.9.5 – before 4.7.0

Weakness: CWE-668, CWE-79 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:L/A:N

References

Release Notes release-notes
GitHub Issue issue-tracking
Pull Request patch
https://www.vulncheck.com/advisories/netbox-session-hijacking-via-custom-links third-party-advisory